Articles | Volume 11, issue 3
https://doi.org/10.5194/esd-11-653-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-11-653-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Jul 2020
Research article |
| 30 Jul 2020
| 30 Jul 2020
Mesoscale atmospheric circulation controls of local meteorological elevation gradients on Kersten Glacier near Kilimanjaro summit
Climate System Research Group, Institute of Geography,
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
Douglas R. Hardy
Department of Geosciences, University of Massachusetts, Amherst, USA
Emily Collier
Climate System Research Group, Institute of Geography,
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
Elena Kropač
Climate System Research Group, Institute of Geography,
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
Christina Schmid
Climate System Research Group, Institute of Geography,
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
Nicolas J. Cullen
School of Geography, University of Otago, Dunedin, New Zealand
Georg Kaser
Department of Atmospheric and Cryospheric Sciences (ACINN),
University of Innsbruck, Innsbruck, Austria
Rainer Prinz
Department of Atmospheric and Cryospheric Sciences (ACINN),
University of Innsbruck, Innsbruck, Austria
Michael Winkler
Zentralanstalt für Meteorologie und Geodynamik (ZAMG), Innsbruck, Austria
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E. Collier, F. Maussion, L. I. Nicholson, T. Mölg, W. W. Immerzeel, and A. B. G. Bush
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Short summary
Short summary
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M. Hofer, B. Marzeion, and T. Mölg
Geosci. Model Dev., 8, 579–593, https://doi.org/10.5194/gmd-8-579-2015, https://doi.org/10.5194/gmd-8-579-2015, 2015
E. Collier, L. I. Nicholson, B. W. Brock, F. Maussion, R. Essery, and A. B. G. Bush
The Cryosphere, 8, 1429–1444, https://doi.org/10.5194/tc-8-1429-2014, https://doi.org/10.5194/tc-8-1429-2014, 2014
W. Gurgiser, B. Marzeion, L. Nicholson, M. Ortner, and G. Kaser
The Cryosphere, 7, 1787–1802, https://doi.org/10.5194/tc-7-1787-2013, https://doi.org/10.5194/tc-7-1787-2013, 2013
S. MacDonell, C. Kinnard, T. Mölg, L. Nicholson, and J. Abermann
The Cryosphere, 7, 1513–1526, https://doi.org/10.5194/tc-7-1513-2013, https://doi.org/10.5194/tc-7-1513-2013, 2013
L. I. Nicholson, R. Prinz, T. Mölg, and G. Kaser
The Cryosphere, 7, 1205–1225, https://doi.org/10.5194/tc-7-1205-2013, https://doi.org/10.5194/tc-7-1205-2013, 2013
E. Collier, T. Mölg, F. Maussion, D. Scherer, C. Mayer, and A. B. G. Bush
The Cryosphere, 7, 779–795, https://doi.org/10.5194/tc-7-779-2013, https://doi.org/10.5194/tc-7-779-2013, 2013
N. J. Cullen, P. Sirguey, T. Mölg, G. Kaser, M. Winkler, and S. J. Fitzsimons
The Cryosphere, 7, 419–431, https://doi.org/10.5194/tc-7-419-2013, https://doi.org/10.5194/tc-7-419-2013, 2013
D. B. Bahr, W. T. Pfeffer, and G. Kaser
The Cryosphere Discuss., https://doi.org/10.5194/tcd-6-5405-2012, https://doi.org/10.5194/tcd-6-5405-2012, 2012
Revised manuscript not accepted
T. Mölg, F. Maussion, W. Yang, and D. Scherer
The Cryosphere, 6, 1445–1461, https://doi.org/10.5194/tc-6-1445-2012, https://doi.org/10.5194/tc-6-1445-2012, 2012
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Salinity dynamics of the Baltic Sea
Impact of urbanization on the thermal environment of the Chengdu–Chongqing urban agglomeration under complex terrain
Sensitivity of land–atmosphere coupling strength to changing atmospheric temperature and moisture over Europe
Human impacts and their interactions in the Baltic Sea region
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition
Accounting for surface waves improves gas flux estimation at high wind speed in a large lake
Multiscale fractal dimension analysis of a reduced order model of coupled ocean–atmosphere dynamics
Modelling sea-level fingerprints of glaciated regions with low mantle viscosity
Jarzynski equality and Crooks relation for local models of air–sea interaction
Interacting tipping elements increase risk of climate domino effects under global warming
A climate network perspective on the intertropical convergence zone
Spatiotemporal patterns of synchronous heavy rainfall events in East Asia during the Baiu season
Rankings of extreme and widespread dry and wet events in the Iberian Peninsula between 1901 and 2016
Stratospheric ozone and quasi-biennial oscillation (QBO) interaction with the tropical troposphere on intraseasonal and interannual timescales: a normal-mode perspective
Daytime low-level clouds in West Africa – occurrence, associated drivers, and shortwave radiation attenuation
Water transport among the world ocean basins within the water cycle
Economic impacts of a glacial period: a thought experiment to assess the disconnect between econometrics and climate sciences
Semi-equilibrated global sea-level change projections for the next 10 000 years
The synergistic impact of ENSO and IOD on Indian summer monsoon rainfall in observations and climate simulations – an information theory perspective
Climate change as an incentive for future human migration
Compound warm–dry and cold–wet events over the Mediterranean
Climate–groundwater dynamics inferred from GRACE and the role of hydraulic memory
On the interconnections among major climate modes and their common driving factors
Eurasian autumn snow link to winter North Atlantic Oscillation is strongest for Arctic warming periods
Back to the future II: tidal evolution of four supercontinent scenarios
Concurrent wet and dry hydrological extremes at the global scale
Synthesis and evaluation of historical meridional heat transport from midlatitudes towards the Arctic
Amplified warming of seasonal cold extremes relative to the mean in the Northern Hemisphere extratropics
Tropical and mid-latitude teleconnections interacting with the Indian summer monsoon rainfall: a theory-guided causal effect network approach
Analysis of the position and strength of westerlies and trades with implications for Agulhas leakage and South Benguela upwelling
Organization of dust storms and synoptic-scale transport of dust by Kelvin waves
ESD Reviews: Climate feedbacks in the Earth system and prospects for their evaluation
North Pacific subtropical sea surface temperature frontogenesis and its connection with the atmosphere above
The multi-scale structure of atmospheric energetic constraints on globally averaged precipitation
Potential of global land water recycling to mitigate local temperature extremes
Pipes to Earth's subsurface: the role of atmospheric conditions in controlling air transport through boreholes and shafts
Causal dependences between the coupled ocean–atmosphere dynamics over the tropical Pacific, the North Pacific and the North Atlantic
Moisture transport and Antarctic sea ice: austral spring 2016 event
Recent changes of relative humidity: regional connections with land and ocean processes
Francisco José Cuesta-Valero, Hugo Beltrami, Almudena García-García, Gerhard Krinner, Moritz Langer, Andrew H. MacDougall, Jan Nitzbon, Jian Peng, Karina von Schuckmann, Sonia I. Seneviratne, Wim Thiery, Inne Vanderkelen, and Tonghua Wu
Earth Syst. Dynam., 14, 609–627, https://doi.org/10.5194/esd-14-609-2023, https://doi.org/10.5194/esd-14-609-2023, 2023
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Climate change is caused by the accumulated heat in the Earth system, with the land storing the second largest amount of this extra heat. Here, new estimates of continental heat storage are obtained, including changes in inland-water heat storage and permafrost heat storage in addition to changes in ground heat storage. We also argue that heat gains in all three components should be monitored independently of their magnitude due to heat-dependent processes affecting society and ecosystems.
David Docquier, Stéphane Vannitsem, and Alessio Bellucci
Earth Syst. Dynam., 14, 577–591, https://doi.org/10.5194/esd-14-577-2023, https://doi.org/10.5194/esd-14-577-2023, 2023
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The climate system is strongly regulated by interactions between the ocean and atmosphere. However, many uncertainties remain in the understanding of these interactions. Our analysis uses a relatively novel approach to quantify causal links between the ocean surface and lower atmosphere based on satellite observations. We find that both the ocean and atmosphere influence each other but with varying intensity depending on the region, demonstrating the power of causal methods.
Clementine Dalelane, Kristina Winderlich, and Andreas Walter
Earth Syst. Dynam., 14, 17–37, https://doi.org/10.5194/esd-14-17-2023, https://doi.org/10.5194/esd-14-17-2023, 2023
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The realistic representation of global teleconnections is an indispensable requirement for the reliable simulation of low-frequency climate variability and climate change. We present an application of the complex network framework to quantify and evaluate large-scale interactions within and between ocean and atmosphere in 22 historical CMIP6 climate projections with respect to two century-long reanalyses.
Shih-Wei Fang, Claudia Timmreck, Johann Jungclaus, Kirstin Krüger, and Hauke Schmidt
Earth Syst. Dynam., 13, 1535–1555, https://doi.org/10.5194/esd-13-1535-2022, https://doi.org/10.5194/esd-13-1535-2022, 2022
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The early 19th century was the coldest period over the past 500 years, when strong tropical volcanic events and a solar minimum coincided. This study quantifies potential surface cooling from the solar and volcanic forcing in the early 19th century with large ensemble simulations, and identifies the regions that their impacts cannot be simply additive. The cooling perspective of Arctic amplification exists in both solar and post-volcano period with the albedo feedback as the main contribution.
Melissa Ruiz-Vásquez, Sungmin O, Alexander Brenning, Randal D. Koster, Gianpaolo Balsamo, Ulrich Weber, Gabriele Arduini, Ana Bastos, Markus Reichstein, and René Orth
Earth Syst. Dynam., 13, 1451–1471, https://doi.org/10.5194/esd-13-1451-2022, https://doi.org/10.5194/esd-13-1451-2022, 2022
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Subseasonal forecasts facilitate early warning of extreme events; however their predictability sources are not fully explored. We find that global temperature forecast errors in many regions are related to climate variables such as solar radiation and precipitation, as well as land surface variables such as soil moisture and evaporative fraction. A better representation of these variables in the forecasting and data assimilation systems can support the accuracy of temperature forecasts.
Carolina M. L. Camargo, Riccardo E. M. Riva, Tim H. J. Hermans, and Aimée B. A. Slangen
Earth Syst. Dynam., 13, 1351–1375, https://doi.org/10.5194/esd-13-1351-2022, https://doi.org/10.5194/esd-13-1351-2022, 2022
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The mass loss from Antarctica, Greenland and glaciers and variations in land water storage cause sea-level changes. Here, we characterize the regional trends within these sea-level contributions, taking into account mass variations since 1993. We take a comprehensive approach to determining the uncertainties of these sea-level changes, considering different types of errors. Our study reveals the importance of clearly quantifying the uncertainties of sea-level change trends.
Steven J. De Hertog, Felix Havermann, Inne Vanderkelen, Suqi Guo, Fei Luo, Iris Manola, Dim Coumou, Edouard L. Davin, Gregory Duveiller, Quentin Lejeune, Julia Pongratz, Carl-Friedrich Schleussner, Sonia I. Seneviratne, and Wim Thiery
Earth Syst. Dynam., 13, 1305–1350, https://doi.org/10.5194/esd-13-1305-2022, https://doi.org/10.5194/esd-13-1305-2022, 2022
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Land cover and land management changes are important strategies for future land-based mitigation. We investigate the climate effects of cropland expansion, afforestation, irrigation, and wood harvesting using three Earth system models. Results show that these have important implications for surface temperature where the land cover and/or management change occurs and in remote areas. Idealized afforestation causes global warming, which might offset the cooling effect from enhanced carbon uptake.
Maria Zeitz, Jan M. Haacker, Jonathan F. Donges, Torsten Albrecht, and Ricarda Winkelmann
Earth Syst. Dynam., 13, 1077–1096, https://doi.org/10.5194/esd-13-1077-2022, https://doi.org/10.5194/esd-13-1077-2022, 2022
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The stability of the Greenland Ice Sheet under global warming is crucial. Here, using PISM, we study how the interplay of feedbacks between the ice sheet, the atmosphere and solid Earth affects the long-term response of the Greenland Ice Sheet under constant warming. Our findings suggest four distinct dynamic regimes of the Greenland Ice Sheet on the route to destabilization under global warming – from recovery via quasi-periodic oscillations in ice volume to ice sheet collapse.
Na Ying, Wansuo Duan, Zhidan Zhao, and Jingfang Fan
Earth Syst. Dynam., 13, 1029–1039, https://doi.org/10.5194/esd-13-1029-2022, https://doi.org/10.5194/esd-13-1029-2022, 2022
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A complex PM2.5 measurement network has been built to investigate transport patterns and cooperative regions in China. Network-based degree measurements are used to reveal the spatial transport pattern of PM2.5. The study also attempts to investigate the seasonal transport path of PM2.5. In addition, the cooperation regions of PM2.5 are quantified according to their synchronicity characteristics. The proposed study can be applied to other air pollutant data, such as ozone and NOx.
Michael J. Prather
Earth Syst. Dynam., 13, 703–709, https://doi.org/10.5194/esd-13-703-2022, https://doi.org/10.5194/esd-13-703-2022, 2022
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Atmospheric CO2 fluctuations point to changes in fossil fuel emissions plus natural and perturbed variations in the natural carbon cycle. One unstudied source of variability is the stratosphere, where the influx of aged CO2-depleted air can cause surface fluctuations. Using modeling and, separately, scaling the observed N2O variability, I find that stratosphere-driven surface variability in CO2 is not a significant uncertainty (at most 10 % of the observed interannual variability).
Matthias Jonas, Rostyslav Bun, Iryna Ryzha, and Piotr Żebrowski
Earth Syst. Dynam., 13, 439–455, https://doi.org/10.5194/esd-13-439-2022, https://doi.org/10.5194/esd-13-439-2022, 2022
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We interpret carbon dioxide emissions from fossil fuel burning and land use as a global stress–strain experiment to reflect the overall behavior of the atmosphere–land and ocean system in response to increasing CO2 emissions since 1850. The system has been trapped progressively in terms of persistence, while its ability to build up memory has been reduced. We expect system failures globally well before 2050 if the current trend in emissions is not reversed immediately and sustainably.
Andreas Lehmann, Kai Myrberg, Piia Post, Irina Chubarenko, Inga Dailidiene, Hans-Harald Hinrichsen, Karin Hüssy, Taavi Liblik, H. E. Markus Meier, Urmas Lips, and Tatiana Bukanova
Earth Syst. Dynam., 13, 373–392, https://doi.org/10.5194/esd-13-373-2022, https://doi.org/10.5194/esd-13-373-2022, 2022
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The salinity in the Baltic Sea is not only an important topic for physical oceanography as such, but it also integrates the complete water and energy cycle. It is a primary external driver controlling ecosystem dynamics of the Baltic Sea. The long-term dynamics are controlled by river runoff, net precipitation, and the water mass exchange between the North Sea and Baltic Sea. On shorter timescales, the ephemeral atmospheric conditions drive a very complex and highly variable salinity regime.
Si Chen, Zhenghui Xie, Jinbo Xie, Bin Liu, Binghao Jia, Peihua Qin, Longhuan Wang, Yan Wang, and Ruichao Li
Earth Syst. Dynam., 13, 341–356, https://doi.org/10.5194/esd-13-341-2022, https://doi.org/10.5194/esd-13-341-2022, 2022
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This study discusses the changes in the summer thermal environment in the Chengdu–Chongqing urban agglomeration due to urban expansion in complex terrain conditions in the recent 40 years, using high-resolution simulations with the WRF model. We quantify the influence of a single urban expansion factor and a single complex terrain factor on the urban thermal environment. Under the joint influence of complex terrain and urban expansion, the heat island effect caused by urbanization was enhanced.
Lisa Jach, Thomas Schwitalla, Oliver Branch, Kirsten Warrach-Sagi, and Volker Wulfmeyer
Earth Syst. Dynam., 13, 109–132, https://doi.org/10.5194/esd-13-109-2022, https://doi.org/10.5194/esd-13-109-2022, 2022
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The land surface can influence the occurrence of local rainfall through different feedback mechanisms. In Europe, this happens most frequently in summer. Here, we examine how differences in atmospheric temperature and moisture change where and how often the land surface can influence rainfall. The results show that the differences barely move the region of strong surface influence over Scandinavia and eastern Europe, but they can change the frequency of coupling events.
Marcus Reckermann, Anders Omstedt, Tarmo Soomere, Juris Aigars, Naveed Akhtar, Magdalena Bełdowska, Jacek Bełdowski, Tom Cronin, Michał Czub, Margit Eero, Kari Petri Hyytiäinen, Jukka-Pekka Jalkanen, Anders Kiessling, Erik Kjellström, Karol Kuliński, Xiaoli Guo Larsén, Michelle McCrackin, H. E. Markus Meier, Sonja Oberbeckmann, Kevin Parnell, Cristian Pons-Seres de Brauwer, Anneli Poska, Jarkko Saarinen, Beata Szymczycha, Emma Undeman, Anders Wörman, and Eduardo Zorita
Earth Syst. Dynam., 13, 1–80, https://doi.org/10.5194/esd-13-1-2022, https://doi.org/10.5194/esd-13-1-2022, 2022
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As part of the Baltic Earth Assessment Reports (BEAR), we present an inventory and discussion of different human-induced factors and processes affecting the environment of the Baltic Sea region and their interrelations. Some are naturally occurring and modified by human activities, others are completely human-induced, and they are all interrelated to different degrees. The findings from this study can largely be transferred to other comparable marginal and coastal seas in the world.
Sebastian Landwehr, Michele Volpi, F. Alexander Haumann, Charlotte M. Robinson, Iris Thurnherr, Valerio Ferracci, Andrea Baccarini, Jenny Thomas, Irina Gorodetskaya, Christian Tatzelt, Silvia Henning, Rob L. Modini, Heather J. Forrer, Yajuan Lin, Nicolas Cassar, Rafel Simó, Christel Hassler, Alireza Moallemi, Sarah E. Fawcett, Neil Harris, Ruth Airs, Marzieh H. Derkani, Alberto Alberello, Alessandro Toffoli, Gang Chen, Pablo Rodríguez-Ros, Marina Zamanillo, Pau Cortés-Greus, Lei Xue, Conor G. Bolas, Katherine C. Leonard, Fernando Perez-Cruz, David Walton, and Julia Schmale
Earth Syst. Dynam., 12, 1295–1369, https://doi.org/10.5194/esd-12-1295-2021, https://doi.org/10.5194/esd-12-1295-2021, 2021
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The Antarctic Circumnavigation Expedition surveyed a large number of variables describing the dynamic state of ocean and atmosphere, freshwater cycle, atmospheric chemistry, ocean biogeochemistry, and microbiology in the Southern Ocean. To reduce the dimensionality of the dataset, we apply a sparse principal component analysis and identify temporal patterns from diurnal to seasonal cycles, as well as geographical gradients and
hotspotsof interaction. Code and data are open access.
Pascal Perolo, Bieito Fernández Castro, Nicolas Escoffier, Thibault Lambert, Damien Bouffard, and Marie-Elodie Perga
Earth Syst. Dynam., 12, 1169–1189, https://doi.org/10.5194/esd-12-1169-2021, https://doi.org/10.5194/esd-12-1169-2021, 2021
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Wind blowing over the ocean creates waves that, by increasing the level of turbulence, promote gas exchange at the air–water interface. In this study, for the first time, we measured enhanced gas exchanges by wind-induced waves at the surface of a large lake. We adapted an ocean-based model to account for the effect of surface waves on gas exchange in lakes. We finally show that intense wind events with surface waves contribute disproportionately to the annual CO2 gas flux in a large lake.
Tommaso Alberti, Reik V. Donner, and Stéphane Vannitsem
Earth Syst. Dynam., 12, 837–855, https://doi.org/10.5194/esd-12-837-2021, https://doi.org/10.5194/esd-12-837-2021, 2021
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We provide a novel approach to diagnose the strength of the ocean–atmosphere coupling by using both a reduced order model and reanalysis data. Our findings suggest the ocean–atmosphere dynamics presents a rich variety of features, moving from a chaotic to a coherent coupled dynamics, mainly attributed to the atmosphere and only marginally to the ocean. Our observations suggest further investigations in characterizing the occurrence and spatial dependency of the ocean–atmosphere coupling.
Alan Bartholet, Glenn A. Milne, and Konstantin Latychev
Earth Syst. Dynam., 12, 783–795, https://doi.org/10.5194/esd-12-783-2021, https://doi.org/10.5194/esd-12-783-2021, 2021
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Improving the accuracy of regional sea-level projections is an important aim that will impact estimates of sea-level hazard around the globe. The computation of sea-level fingerprints is a key component of any such projection, and to date these computations have been based on the assumption that elastic deformation accurately describes the solid Earth response on century timescales. We show here that this assumption is inaccurate in some glaciated regions characterized by low mantle viscosity.
Achim Wirth and Florian Lemarié
Earth Syst. Dynam., 12, 689–708, https://doi.org/10.5194/esd-12-689-2021, https://doi.org/10.5194/esd-12-689-2021, 2021
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We show that modern concepts of non-equilibrium statistical mechanics can be applied to large-scale environmental fluid dynamics, where fluctuations are not thermal but come from turbulence. The work theorems developed by Jarzynski and Crooks are applied to air–sea interaction. Rather than looking at the average values of thermodynamic variables, their probability density functions are considered, which allows us to replace the inequalities of equilibrium statistical mechanics with equalities.
Nico Wunderling, Jonathan F. Donges, Jürgen Kurths, and Ricarda Winkelmann
Earth Syst. Dynam., 12, 601–619, https://doi.org/10.5194/esd-12-601-2021, https://doi.org/10.5194/esd-12-601-2021, 2021
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In the Earth system, climate tipping elements exist that can undergo qualitative changes in response to environmental perturbations. If triggered, this would result in severe consequences for the biosphere and human societies. We quantify the risk of tipping cascades using a conceptual but fully dynamic network approach. We uncover that the risk of tipping cascades under global warming scenarios is enormous and find that the continental ice sheets are most likely to initiate these failures.
Frederik Wolf, Aiko Voigt, and Reik V. Donner
Earth Syst. Dynam., 12, 353–366, https://doi.org/10.5194/esd-12-353-2021, https://doi.org/10.5194/esd-12-353-2021, 2021
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In our work, we employ complex networks to study the relation between the time mean position of the intertropical convergence zone (ITCZ) and sea surface temperature (SST) variability. We show that the information hidden in different spatial SST correlation patterns, which we access utilizing complex networks, is strongly correlated with the time mean position of the ITCZ. This research contributes to the ongoing discussion on drivers of the annual migration of the ITCZ.
Frederik Wolf, Ugur Ozturk, Kevin Cheung, and Reik V. Donner
Earth Syst. Dynam., 12, 295–312, https://doi.org/10.5194/esd-12-295-2021, https://doi.org/10.5194/esd-12-295-2021, 2021
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Motivated by a lacking onset prediction scheme, we examine the temporal evolution of synchronous heavy rainfall associated with the East Asian Monsoon System employing a network approach. We find, that the evolution of the Baiu front is associated with the formation of a spatially separated double band of synchronous rainfall. Furthermore, we identify the South Asian Anticyclone and the North Pacific Subtropical High as the main drivers, which have been assumed to be independent previously.
Margarida L. R. Liberato, Irene Montero, Célia Gouveia, Ana Russo, Alexandre M. Ramos, and Ricardo M. Trigo
Earth Syst. Dynam., 12, 197–210, https://doi.org/10.5194/esd-12-197-2021, https://doi.org/10.5194/esd-12-197-2021, 2021
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Extensive, long-standing dry and wet episodes are frequent climatic extreme events (EEs) in the Iberian Peninsula (IP). A method for ranking regional extremes of persistent, widespread drought and wet events is presented, using different SPEI timescales. Results show that there is no region more prone to EE occurrences in the IP, the most extreme extensive agricultural droughts evolve into hydrological and more persistent extreme droughts, and widespread wet and dry EEs are anti-correlated.
Breno Raphaldini, André S. W. Teruya, Pedro Leite da Silva Dias, Lucas Massaroppe, and Daniel Yasumasa Takahashi
Earth Syst. Dynam., 12, 83–101, https://doi.org/10.5194/esd-12-83-2021, https://doi.org/10.5194/esd-12-83-2021, 2021
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Several recent studies suggest a modulation of the Madden–Julian oscillation (MJO) by the quasi-biennial oscillation (QBO). The physics behind this interaction, however, remain poorly understood. In this study, we investigated the QBO–MJO interaction and the role of stratospheric ozone as a forcing mechanism. A normal-mode decomposition procedure combined with causality analysis reveals significant interactions between MJO-related modes and QBO-related modes.
Derrick K. Danso, Sandrine Anquetin, Arona Diedhiou, Kouakou Kouadio, and Arsène T. Kobea
Earth Syst. Dynam., 11, 1133–1152, https://doi.org/10.5194/esd-11-1133-2020, https://doi.org/10.5194/esd-11-1133-2020, 2020
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The atmospheric and surface conditions that exist during the occurrence of daytime low-level clouds (LLCs) and their influence on solar radiation were investigated in West Africa. During the monsoon season, these LLCs are linked to high moisture flux driven by strong southwesterly winds from the Gulf of Guinea and significant background moisture levels. Their occurrence leads to a strong reduction in the incoming solar radiation and has large impacts on the surface energy budget.
David García-García, Isabel Vigo, and Mario Trottini
Earth Syst. Dynam., 11, 1089–1106, https://doi.org/10.5194/esd-11-1089-2020, https://doi.org/10.5194/esd-11-1089-2020, 2020
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The global water cycle involves water-mass transport on land, in the atmosphere, in the ocean, and among them. The GRACE mission has allowed for the quantification of water-mass variations. It was a revolution in the understanding of Earth dynamics. Here, we develop and apply a novel method, based on GRACE data and atmospheric models, that allows systematic estimation of water-mass exchange among ocean basins. This is valuable for understanding the role of the ocean within the water cycle.
Marie-Noëlle Woillez, Gaël Giraud, and Antoine Godin
Earth Syst. Dynam., 11, 1073–1087, https://doi.org/10.5194/esd-11-1073-2020, https://doi.org/10.5194/esd-11-1073-2020, 2020
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To illustrate the fact that future economic damage from global warming is often highly underestimated, we applied two different statistically based damage functions available in the literature to a global cooling of 4 °C. We show that the gross domestic product (GDP) projections obtained are at odds with the state of the planet during an ice age. We conclude that such functions do not provide relevant information on potential damage from a large climate change, be it cooling or warming.
Jonas Van Breedam, Heiko Goelzer, and Philippe Huybrechts
Earth Syst. Dynam., 11, 953–976, https://doi.org/10.5194/esd-11-953-2020, https://doi.org/10.5194/esd-11-953-2020, 2020
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We made projections of global mean sea-level change during the next 10 000 years for a range in climate forcing scenarios ranging from a peak in carbon dioxide concentrations in the next decades to burning most of the available carbon reserves over the next 2 centuries. We find that global mean sea level will rise between 9 and 37 m, depending on the emission of greenhouse gases. In this study, we investigated the long-term consequence of climate change for sea-level rise.
Praveen Kumar Pothapakula, Cristina Primo, Silje Sørland, and Bodo Ahrens
Earth Syst. Dynam., 11, 903–923, https://doi.org/10.5194/esd-11-903-2020, https://doi.org/10.5194/esd-11-903-2020, 2020
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Information exchange (IE) from the Indian Ocean Dipole (IOD) and El Niño–Southern Oscillation (ENSO) to Indian summer monsoon rainfall (ISMR) is investigated. Observational data show that IOD and ENSO synergistically exchange information on ISMR variability over central India. IE patterns observed in three global climate models (GCMs) differ from observations. Our study highlights new perspectives that IE metrics could bring to climate science.
Min Chen and Ken Caldeira
Earth Syst. Dynam., 11, 875–883, https://doi.org/10.5194/esd-11-875-2020, https://doi.org/10.5194/esd-11-875-2020, 2020
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We examine the implications of future motivation for humans to migrate by analyzing today’s relationships between climatic factors and population density, with all other factors held constant. Such analyses are unlikely to make accurate predictions but can still be useful for informing discussions about the broad range of incentives that might influence migration decisions. Areas with the highest projected population growth rates tend to be the areas most adversely affected by climate change.
Paolo De Luca, Gabriele Messori, Davide Faranda, Philip J. Ward, and Dim Coumou
Earth Syst. Dynam., 11, 793–805, https://doi.org/10.5194/esd-11-793-2020, https://doi.org/10.5194/esd-11-793-2020, 2020
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In this paper we quantify Mediterranean compound temperature and precipitation dynamical extremes (CDEs) over the 1979–2018 period. The strength of the temperature–precipitation coupling during summer increased and is driven by surface warming. We also link the CDEs to compound hot–dry and cold–wet events during summer and winter respectively.
Simon Opie, Richard G. Taylor, Chris M. Brierley, Mohammad Shamsudduha, and Mark O. Cuthbert
Earth Syst. Dynam., 11, 775–791, https://doi.org/10.5194/esd-11-775-2020, https://doi.org/10.5194/esd-11-775-2020, 2020
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Knowledge of the relationship between climate and groundwater is limited and typically undermined by the scale, duration and accessibility of observations. Using monthly satellite measurements newly compiled over 14 years in the tropics and sub-tropics, we show that the imprint of precipitation history on groundwater, i.e. hydraulic memory, is longer in drylands than humid environments with important implications for the understanding and management of groundwater resources under climate change.
Xinnong Pan, Geli Wang, Peicai Yang, Jun Wang, and Anastasios A. Tsonis
Earth Syst. Dynam., 11, 525–535, https://doi.org/10.5194/esd-11-525-2020, https://doi.org/10.5194/esd-11-525-2020, 2020
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The variations in oceanic and atmospheric modes play important roles in global and regional climate variability. The relationships between their variations and regional climate variability have been extensively examined, but the interconnections among these climate modes remain unclear. We show that the base periods and their harmonic oscillations that appear to be related to QBO, ENSO, and solar activities act as key connections among the climatic modes with synchronous behaviors.
Martin Wegmann, Marco Rohrer, María Santolaria-Otín, and Gerrit Lohmann
Earth Syst. Dynam., 11, 509–524, https://doi.org/10.5194/esd-11-509-2020, https://doi.org/10.5194/esd-11-509-2020, 2020
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Predicting the climate of the upcoming season is of big societal benefit, but finding out which component of the climate system can act as a predictor is difficult. In this study, we focus on Eurasian snow cover as such a component and show that knowing the snow cover in November is very helpful in predicting the state of winter over Europe. However, this mechanism was questioned in the past. Using snow data that go back 150 years into the past, we are now very confident in this relationship.
Hannah S. Davies, J. A. Mattias Green, and Joao C. Duarte
Earth Syst. Dynam., 11, 291–299, https://doi.org/10.5194/esd-11-291-2020, https://doi.org/10.5194/esd-11-291-2020, 2020
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We have confirmed that there is a supertidal cycle associated with the supercontinent cycle. As continents drift due to plate tectonics, oceans also change size, controlling the strength of the tides and causing periods of supertides. In this work, we used a coupled tectonic–tidal model of Earth's future to test four different scenarios that undergo different styles of ocean closure and periods of supertides. This has implications for the Earth system and for other planets with liquid oceans.
Paolo De Luca, Gabriele Messori, Robert L. Wilby, Maurizio Mazzoleni, and Giuliano Di Baldassarre
Earth Syst. Dynam., 11, 251–266, https://doi.org/10.5194/esd-11-251-2020, https://doi.org/10.5194/esd-11-251-2020, 2020
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We show that floods and droughts can co-occur in time across remote regions on the globe and introduce metrics that can help in quantifying concurrent wet and dry hydrological extremes. We then link wet–dry extremes to major modes of climate variability (i.e. ENSO, PDO, and AMO) and provide their spatial patterns. Such concurrent extreme hydrological events may pose risks to regional hydropower production and agricultural yields.
Yang Liu, Jisk Attema, Ben Moat, and Wilco Hazeleger
Earth Syst. Dynam., 11, 77–96, https://doi.org/10.5194/esd-11-77-2020, https://doi.org/10.5194/esd-11-77-2020, 2020
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Poleward meridional energy transport (MET) has significant impact on the climate in the Arctic. In this study, we quantify and intercompare MET at subpolar latitudes from six reanalysis data sets. The results indicate that the spatial distribution and temporal variations of MET differ substantially among the reanalysis data sets. Our study suggests that the MET estimated from reanalyses is useful for the evaluation of energy transports but should be used with great care.
Mia H. Gross, Markus G. Donat, Lisa V. Alexander, and Steven C. Sherwood
Earth Syst. Dynam., 11, 97–111, https://doi.org/10.5194/esd-11-97-2020, https://doi.org/10.5194/esd-11-97-2020, 2020
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This study explores the amplified warming of cold extremes relative to average temperatures for both the recent past and future in the Northern Hemisphere and the possible physical processes that are driving this. We find that decreases in snow cover and
warmer-than-usual winds are driving the disproportionate rates of warming in cold extremes relative to average temperatures. These accelerated warming rates in cold extremes have implications for tourism, insect longevity and human health.
Giorgia Di Capua, Marlene Kretschmer, Reik V. Donner, Bart van den Hurk, Ramesh Vellore, Raghavan Krishnan, and Dim Coumou
Earth Syst. Dynam., 11, 17–34, https://doi.org/10.5194/esd-11-17-2020, https://doi.org/10.5194/esd-11-17-2020, 2020
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Drivers from both the mid-latitudes and the tropical regions have been proposed to influence the Indian summer monsoon (ISM) subseasonal variability. To understand the relative importance of tropical and mid-latitude drivers, we apply recently developed causal discovery techniques to disentangle the causal relationships among these processes. Our results show that there is indeed a two-way interaction between the mid-latitude circulation and ISM rainfall over central India.
Nele Tim, Eduardo Zorita, Kay-Christian Emeis, Franziska U. Schwarzkopf, Arne Biastoch, and Birgit Hünicke
Earth Syst. Dynam., 10, 847–858, https://doi.org/10.5194/esd-10-847-2019, https://doi.org/10.5194/esd-10-847-2019, 2019
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Our study reveals that the latitudinal position and intensity of Southern Hemisphere trades and westerlies are correlated. In the last decades the westerlies have shifted poleward and intensified. Furthermore, the latitudinal shifts and intensity of the trades and westerlies impact the sea surface temperatures around southern Africa and in the South Benguela upwelling region. The future development of wind stress depends on the strength of greenhouse gas forcing.
Ashok Kumar Pokharel and Michael L. Kaplan
Earth Syst. Dynam., 10, 651–666, https://doi.org/10.5194/esd-10-651-2019, https://doi.org/10.5194/esd-10-651-2019, 2019
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This study contributes to a better understanding of how large-scale dust transport can be organized from northwest Africa to the US, Amazon basin, and Europe and might be due in part to Kelvin waves. We also think there is still a need to study major historical dust events that occurred in this region to confirm that this location is suitable and responsible for the generation of the Kelvin waves and the transport of dust on a regular basis.
Christoph Heinze, Veronika Eyring, Pierre Friedlingstein, Colin Jones, Yves Balkanski, William Collins, Thierry Fichefet, Shuang Gao, Alex Hall, Detelina Ivanova, Wolfgang Knorr, Reto Knutti, Alexander Löw, Michael Ponater, Martin G. Schultz, Michael Schulz, Pier Siebesma, Joao Teixeira, George Tselioudis, and Martin Vancoppenolle
Earth Syst. Dynam., 10, 379–452, https://doi.org/10.5194/esd-10-379-2019, https://doi.org/10.5194/esd-10-379-2019, 2019
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Earth system models for producing climate projections under given forcings include additional processes and feedbacks that traditional physical climate models do not consider. We present an overview of climate feedbacks for key Earth system components and discuss the evaluation of these feedbacks. The target group for this article includes generalists with a background in natural sciences and an interest in climate change as well as experts working in interdisciplinary climate research.
Leying Zhang, Haiming Xu, Jing Ma, Ning Shi, and Jiechun Deng
Earth Syst. Dynam., 10, 261–270, https://doi.org/10.5194/esd-10-261-2019, https://doi.org/10.5194/esd-10-261-2019, 2019
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Net heat flux dominates the frontogenesis of the NPSTF from October to December, while oceanic meridional temperature advection contributes equally as much or even more net heat flux in January and February. The atmosphere is critical to frontogenesis through net heat flux and the Aleutian low, the latter of which benefits meridional temperature advection.
Miguel Nogueira
Earth Syst. Dynam., 10, 219–232, https://doi.org/10.5194/esd-10-219-2019, https://doi.org/10.5194/esd-10-219-2019, 2019
Mathias Hauser, Wim Thiery, and Sonia Isabelle Seneviratne
Earth Syst. Dynam., 10, 157–169, https://doi.org/10.5194/esd-10-157-2019, https://doi.org/10.5194/esd-10-157-2019, 2019
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We develop a method to keep the amount of water in the soil at the present-day level, using only local water sources in a global climate model. This leads to less drying over many land areas, but also decreases river runoff. We find that temperature extremes in the 21st century decrease substantially using our method. This provides a new perspective on how land water can influence regional climate and introduces land water management as potential tool for local mitigation of climate change.
Elad Levintal, Nadav G. Lensky, Amit Mushkin, and Noam Weisbrod
Earth Syst. Dynam., 9, 1141–1153, https://doi.org/10.5194/esd-9-1141-2018, https://doi.org/10.5194/esd-9-1141-2018, 2018
Stéphane Vannitsem and Pierre Ekelmans
Earth Syst. Dynam., 9, 1063–1083, https://doi.org/10.5194/esd-9-1063-2018, https://doi.org/10.5194/esd-9-1063-2018, 2018
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The El Niño–Southern Oscillation phenomenon is a slow dynamics present in the coupled ocean–atmosphere tropical Pacific system which has important teleconnections with the northern extratropics. These teleconnections are usually believed to be the source of an enhanced predictability in the northern extratropics at seasonal to decadal timescales. This question is challenged by investigating the causality between these regions using an advanced technique known as convergent cross mapping.
Monica Ionita, Patrick Scholz, Klaus Grosfeld, and Renate Treffeisen
Earth Syst. Dynam., 9, 939–954, https://doi.org/10.5194/esd-9-939-2018, https://doi.org/10.5194/esd-9-939-2018, 2018
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In austral spring 2016 the Antarctic region experienced anomalous sea ice retreat in all sectors, with sea ice extent in October and November 2016 being the lowest in the Southern Hemisphere over the observational record (1979–present). The extreme sea ice retreat was accompanied by the wettest and warmest spring on record, over large areas covering the Indian ocean, the Ross Sea, and the Weddell Sea.
Sergio M. Vicente-Serrano, Raquel Nieto, Luis Gimeno, Cesar Azorin-Molina, Anita Drumond, Ahmed El Kenawy, Fernando Dominguez-Castro, Miquel Tomas-Burguera, and Marina Peña-Gallardo
Earth Syst. Dynam., 9, 915–937, https://doi.org/10.5194/esd-9-915-2018, https://doi.org/10.5194/esd-9-915-2018, 2018
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We analyzed changes in surface relative humidity (RH) at the global scale from 1979 to 2014 and compared the variability and trends in RH with those in land evapotranspiration and ocean evaporation in moisture source areas across a range of selected regions worldwide. Our results stress that the different hypotheses that may explain the decrease in RH under a global warming scenario could act together to explain recent RH trends.
Cited articles
Anders, A. M. and Nesbitt, S. W.: Altitudinal precipitation gradients in the
tropics from Tropical Rainfall Measuring Mission (TRMM) precipitation radar,
J. Hydrometeorol., 16, 441–448, https://doi.org/10.1175/JHM-D-14-0178.1, 2015.
Anyamba, A., Tucker, C. J., and Mahoney, R.: From El Niño to La
Niña: Vegetation response patterns over east and southern Africa during
the 1997–2000 period, J. Climate, 15, 3096–3103,
doi:0.1175/1520-0442(2002)015<3096:FENOTL>2.0.CO;2,
2002.
Appelhans, T., Mwangomo, E., Otte, I., Detsch, F., Nauss, T., and Hemp, A.:
Eco-meteorological characteristics of the southern slopes of Kilimanjaro,
Tanzania, Int. J. Climatol., 36, 3245–3258, https://doi.org/10.1002/joc.4552, 2016.
Ayala, A., Pellicciotti, F., and Shea, J. M.: Modeling 2 m air temperatures
over mountain glaciers: Exploring the influence of katabatic cooling and
external warming, J. Geophys. Res.-Atmos., 120, 3139–3157,
https://doi.org/10.1002/2015JD023137, 2015.
Baral, P., Kayastha, R. B., Immerzeel, W. W., Pradhananga, N. S., Bhattarai,
B. C., Shahi, S., Galos, S., Springer, C., Joshi, S. P., and Mool, P. K.:
Preliminary results of mass-balance observations of Yala Glacier and
analysis of temperature and precipitation gradients in Langtang Valley,
Nepal, Ann. Glaciol., 55, 9–14, https://doi.org/10.3189/2014AoG66A106, 2014.
Barry, R. G.: Mountain weather and climate, Routledge, London, England, 1992.
Behrendt, A., Pal, S., Aoshima, F., Bender, M., Blyth, A., Corsmeier, U.,
Cuesta, J., Dick, G., Dorninger, M., Flamant, C., Di Girolamo, P., Gorgas,
T., Huang, Y., Kalthoff, N., Khodayar, S., Mannstein, H., Träumner, K.,
Wieser, A., and Wulfmeyer, V.: Observation of convection initiation
processes with a suite of state-of-the-art research instruments during COPS
IOP 8b, Q. J. Roy. Meteor. Soc., 137, 81–100, https://doi.org/10.1002/qj.758, 2011.
Buytaert, W., Celleri, R., Willems, P., De Bievre, B., and Wyseure, G.:
Spatial and temporal rainfall variability in mountainous areas: A case study
from the south Ecuadorian Andes, J. Hydrol., 329, 413–421,
https://doi.org/10.1016/j.jhydrol.2006.02.031, 2006.
Buytaert, W., Cuesta-Camacho, F., and Tobón, C.: Potential impacts of
climate change on the environmental services of humid tropical alpine
regions, Global Ecol. Biogeogr., 20, 19–33,
https://doi.org/10.1111/j.1466-8238.2010.00585.x, 2011.
Camberlin, P., Boyard-Micheau, J., Philippon, N., Baron, C., Leclerc, C.,
and Mwongera, C.: Climatic gradients along the windward slopes of Mount
Kenya and their implication for crop risks. Part 1: climate variability,
Int. J. Climatol., 34, 2136–2152, https://doi.org/10.1002/joc.3427, 2014.
Carturan, L., Cazorzi, F., De Blasi, F., and Dalla Fontana, G.: Air temperature variability over three glaciers in the Ortles–Cevedale (Italian Alps): effects of glacier fragmentation, comparison of calculation methods, and impacts on mass balance modeling, The Cryosphere, 9, 1129–1146, https://doi.org/10.5194/tc-9-1129-2015, 2015.
Collier, E., Mölg, T., Maussion, F., Scherer, D., Mayer, C., and Bush, A. B. G.: High-resolution interactive modelling of the mountain glacier–atmosphere interface: an application over the Karakoram, The Cryosphere, 7, 779–795, https://doi.org/10.5194/tc-7-779-2013, 2013.
Collier, E. and Immerzeel, W. W.: High-resolution modeling of atmospheric
dynamics in the Nepalese Himalaya, J. Geophys. Res.-Atmos., 120, 9882–9896,
https://doi.org/10.1002/2015JD023266, 2015.
Collier, E., Mölg, T., and Sauter, T.: Recent Atmospheric Variability at
Kibo Summit, Kilimanjaro, and Its Relation to Climate Mode Activity, J.
Climate, 31, 3875–3891, https://doi.org/10.1175/JCLI-D-17-0551.1, 2018.
Cullen, N. J., Mölg T., Kaser G., Hussein K., Steffen K., and Hardy D.
R.: Kilimanjaro Glaciers: Recent areal glacier extent from satellite data
and new interpretation of observed 20th century retreat rates. Geophys. Res.
Lett., 33, L16502, https://doi.org/10.1029/2006GL027084, 2006.
Cullen, N. J., Sirguey, P., Mölg, T., Kaser, G., Winkler, M., and Fitzsimons, S. J.: A century of ice retreat on Kilimanjaro: the mapping reloaded, The Cryosphere, 7, 419–431, https://doi.org/10.5194/tc-7-419-2013, 2013.
Daly, C., Conklin, D. R., and Unsworth, M. H.: Local atmospheric decoupling
in complex topography alters climate change impacts, Int. J. Climatol., 30,
1857–1864, https://doi.org/10.1002/joc.2007, 2010.
Denby, B. and Greuell, W.: The use of bulk and profile methods for
determining surface heat fluxes in the presence of glacier winds, J.
Glaciol., 46, 445–452, https://doi.org/10.3189/172756500781833124, 2000.
Dong, W., Lin, Y., Wright, J. S., Ming, Y., Xie, Y., Wang, B., Luo, Y.,
Huang, W., Huang, J., Wang, L., Tian, L., Peng, Y., and Xu, F.: Summer
rainfall over the southwestern Tibetan Plateau controlled by deep convection
over the Indian subcontinent, Nat. Commun., 7, 10925,
https://doi.org/10.1038/ncomms10925, 2016.
Dreiseitl, E.: Slope and free air temperature in the Inn Valley, Meteorol.
Atmos. Phys., 39, 25–41, https://doi.org/10.1007/BF01029895, 1988.
Duane, W. J., Pepin, N. C., Losleben, M. L., and Hardy, D. R.: General
characteristics of temperature and humidity variability on Kilimanjaro,
Tanzania, Arct. Antarct. Alp. Res., 40, 323–334,
https://doi.org/10.1657/1523-0430(06-127)[DUANE]2.0.CO;2, 2008.
Farinotti, D., Longuevergne, L., Moholdt, G., Duethmann, D., Mölg, T.,
Bolch, T., Vorogushyn, S., and Güntner, A.: Substantial glacier mass
loss in the Tien Shan over the past 50 years, Nat. Geosci., 8, 716–722,
https://doi.org/10.1038/ngeo2513, 2015.
Geilinger, W.: The retreat of the Kilimanjaro glaciers, Tanganyka Notes and
Records, 2, 7–20, 1936.
Giovannini, L., Laiti, L., Serafin, S., and Zardi, D.: The thermally driven
diurnal wind system of the Adige Valley in the Italian Alps, Q. J. Roy.
Meteor. Soc., 143, 2389–2402, https://doi.org/10.1002/qj.3092, 2017.
Gohm, A., Harnisch, F., Vergeiner, J., Obleitner, F., Schnitzhofer, R., Hansel,
A., Fix, A., Neininger, B., Emeis, S., and Schäfer, K.: Air Pollution
Transport in an Alpine Valley: Results From Airborne and Ground-Based
Observations, Bound.-Lay. Meteorol., 131, 441–463, 2009.
González, S. and Garreaud, R.: Spatial variability of near-surface
temperature over the coastal mountains in southern Chile (38 S), Meteorol.
Atmos. Phys., 131, 1–16, https://doi.org/10.1007/s00703-017-0555-4, 2017.
Greuell, W. and Böhm, R.: 2 m temperatures along melting mid-latitude
glaciers, and implications for the sensitivity of the mass balance to
variations in temperature, J. Glaciol., 44, 9–20,
https://doi.org/10.3189/S0022143000002306, 1998.
Greuell, W., Knap, W. H., and Smeets, P.: Elevational changes in meteorological
variables along a mid-latitude glacier during summer, J. Geophys. Res., 102,
25941–25954, https://doi.org/10.1029/97JD02083, 1997.
Hardy, D. R.: Kilimanjaro, in: Encyclopedia of Snow, Ice and Glaciers,
edited by: Singh, V. P., Singh, P., and Haritashya, U. K., Springer,
Dordrecht, the Netherlands, 672–679, 2011.
Hardy, D. R., Vuille M., and Bradley R. S.: Variability of snow accumulation
and isotopic composition on Nevado Sajama, Bolivia, J. Geophys. Res., 108,
4693, https://doi.org/10.1029/2003JD003623, 2003.
Hastenrath, S.: The glaciers of Equatorial East Africa, D. Reidel Pub. Co.,
Dordrecht/Boston/Lancaster, 1984.
Hastenrath, S.: Climate dynamics of the Tropics, Kluwer Academic Pub.,
Dordrecht/Boston/London, 1991.
Hemp, A.: Vegetation of Kilimanjaro: hidden endemics and missing bamboo,
Afr. J. Ecol., 44, 305–328, https://doi.org/10.1111/j.1365-2028.2006.00679.x, 2006.
Junquas, C., Takahashi, K., Condom, T., Espinoza, J. C., Chavez, S., Sicart,
J. E., and Lebel, T.: Understanding the influence of orography on the
precipitation diurnal cycle and the associated atmospheric processes in the
central Andes, Clim. Dynam., 50, 3995–4017, https://doi.org/10.1007/s00382-017-3858-8,
2018.
Kang, Y., Belušić, D., and Smith-Miles, K.: Classes of structures in
the stable atmospheric boundary layer, Q. J. Roy. Meteor. Soc., 141,
2057–2069, https://doi.org/10.1002/qj.2501, 2015.
Kaser, G. and Osmaston, H.: Tropical glaciers, International Hydrology
Series, Cambridge University Press, Cambridge, UK, 2002.
Kaser, G., Mölg, T., Cullen, N. J., Hardy, D. R., and Winkler, M.: Is
the decline of ice on Kilimanjaro unprecedented in the Holocene?, The
Holocene, 20, 1079–1091, https://doi.org/10.1177/0959683610369498, 2010.
Kirshbaum, D. J. and Wang, C. C.: Boundary layer updrafts driven by airflow
over heated terrain, J. Atmos. Sci., 71, 1425–1442,
https://doi.org/10.1175/JAS-D-13-0287.1, 2014.
Kirshbaum, D. J., Adler, B., Kalthoff, N., Barthlott, C., and Serafin, S.:
Moist orographic convection: Physical mechanisms and links to
surface-exchange processes, Atmosphere, 9, 80, https://doi.org/10.3390/atmos9030080,
2018.
Klok, E. L. and Oerlemans, J.: Model study of the spatial distribution of
the energy and mass balance of Morteratschgletscher, Switzerland, J.
Glaciol., 48, 505–518, https://doi.org/10.3189/172756502781831133, 2002.
Machguth, H., Paul, F., Kotlarski, S., and Hoelzle, M.: Calculating
distributed glacier mass balance for the Swiss Alps from regional climate
model output: A methodical description and interpretation of the results, J. Geophys. Res.-Atmos., 114, D19106, https://doi.org/10.1029/2009JD011775, 2009.
MacDonell, S., Kinnard, C., Mölg, T., Nicholson, L., and Abermann, J.: Meteorological drivers of ablation processes on a cold glacier in the semi-arid Andes of Chile, The Cryosphere, 7, 1513–1526, https://doi.org/10.5194/tc-7-1513-2013, 2013.
Mair, M. and Baumgartner, D. J.: Operational experience with automatic snow
depth sensors – ultrasonic and laser principle, TECO-2010 – WMO Technical
Conference on Meteorological and Environmental Instruments and Methods of
Observation, Helsinki, Finland, 30 August–1 September 2010.
Marzeion, B., Jarosch, A. H., and Hofer, M.: Past and future sea-level change from the surface mass balance of glaciers, The Cryosphere, 6, 1295–1322, https://doi.org/10.5194/tc-6-1295-2012, 2012.
Mayr, G. J., Armi, L., Arnold, S., Banta, R. M., Darby, L. S., Durran, D. D., Flamant, C., Gaberšek, S., Gohm, A., Mayr, R., Mobbs, S., Nance, L. B., Vergeiner, I., Vergeiner, J., and Whiteman, C. D.: Gap flow measurements during the Mesoscale Alpine Programme, Meteorol. Atmos. Phys., 86, 99–119,
https://doi.org/10.1007/s00703-003-0022-2, 2004.
Mendonca, B. G.: Local wind circulation on the slopes of Mauna Loa, J. Appl.
Meteorol., 8, 533–541, https://doi.org/10.1175/1520-0450(1969)008<0533:LWCOTS>2.0.CO;2, 1969.
Minder, J. R., Mote, P. W., and Lundquist, J. D.: Surface temperature lapse
rates over complex terrain: Lessons from the Cascade Mountains, J. Geophys.
Res.-Atmos., 115, D14122, https://doi.org/10.1029/2009JD013493, 2010.
Minder, J. R., Durran, D. R., and Roe, G. H.: Mesoscale controls on the
mountainside snow line, J. Atmos. Sci., 68, 2107–2127,
https://doi.org/10.1175/JAS-D-10-05006.1, 2011.
Mölg, T. and Hardy, D. R.: Ablation and associated energy balance of a
horizontal glacier surface on Kilimanjaro, J. Geophys. Res., 109, D16104,
https://doi.org/10.1029/2003JD004338, 2004.
Mölg, T. and Kaser, G.: A new approach to resolving climate-cryosphere
relations: Downscaling climate dynamics to glacier-scale mass and energy
balance without statistical scale linking, J. Geophys. Res., 116, D16101,
https://doi.org/10.1029/2011JD015669, 2011.
Mölg, T. and Scherer, D.: Retrieving important mass-balance model
parameters from AWS measurements and high-resolution mesoscale atmospheric
modeling, J. Glaciol., 58, 625–628, https://doi.org/10.3189/2012JoG11J258, 2012.
Mölg, T., Georges, C., and Kaser, G.: The contribution of increased
incoming shortwave radiation to the retreat of the Rwenzori Glaciers, East
Africa, during the 20th century, Int. J. Climatol., 23, 291–303,
https://doi.org/10.1002/joc.877, 2003.
Mölg, T., Cullen, N. J., Hardy, D. R., Winkler, M., and Kaser, G.:
Quantifying climate change in the tropical midtroposphere over East Africa
from glacier shrinkage on Kilimanjaro, J. Climate, 22, 4162–4181,
https://doi.org/10.1175/2009JCLI2954.1, 2009a.
Mölg, T., Chiang, J. H. C., Gohm, A., and Cullen, N. J.: Temporal
precipitation variability versus altitude on a tropical high mountain:
Observations and mesoscale atmospheric modeling, Q. J. Roy. Meteor. Soc.,
135, 1439–1455, https://doi.org/10.1002/qj.461, 2009b.
Mölg, T., Großhauser, M., Hemp, A., Hofer, M., and Marzeion, B.: Limited
forcing of glacier loss through land-cover change on Kilimanjaro, Nat. Clim.
Change, 2, 254–258, https://doi.org/10.1038/nclimate1390, 2012.
Nicholson, L. I., Prinz, R., Mölg, T., and Kaser, G.: Micrometeorological conditions and surface mass and energy fluxes on Lewis Glacier, Mt Kenya, in relation to other tropical glaciers, The Cryosphere, 7, 1205–1225, https://doi.org/10.5194/tc-7-1205-2013, 2013.
Oerlemans, J. and Klok, E. J.: Energy balance of a glacier surface: analysis of automatic weather station data from the Morteratschgletscher, Switzerland, Arct. Antarct. Alp. Res., 34, 477–485, https://doi.org/10.1080/15230430.2002.12003519, 2002.
Patsiou, T. S., Conti, E., Theodoridis, S., and Randin, C. F.: The contribution
of cold air pooling to the distribution of a rare and endemic plant of the
Alps, Plant Ecol. Divers., 10, 29–42, https://doi.org/10.1080/17550874.2017.1302997,
2017.
Pepin, N. C., Duane, W. J., and Hardy, D. R.: The montane circulation on
Kilimanjaro, Tanzania and its relevance for the summit ice fields:
Comparison of surface mountain climate with equivalent reanalysis
parameters, Global Planet. Change, 74, 61–75,
https://doi.org/10.1016/j.gloplacha.2010.08.001, 2010.
Petersen, L. and Pellicciotti, F.: Spatial and temporal variability of air
temperature on a melting glacier: Atmospheric controls, extrapolation
methods and their effect on melt modeling, Juncal Norte Glacier, Chile, J. Geophys. Res., 116, D23109, https://doi.org/10.1029/2011JD015842, 2011.
Petersen, L., Pellicciotti, F., Juszak, I., Carenzo, M., and Brock, B.:
Suitability of a constant air temperature lapse rate over an Alpine glacier:
testing the Greuell and Böhm model as an alternative, Ann. Glaciol., 54,
120–130, https://doi.org/10.3189/2013AoG63A477, 2013.
Prinz, R., Nicholson, L. I., Mölg, T., Gurgiser, W., and Kaser, G.: Climatic controls and climate proxy potential of Lewis Glacier, Mt. Kenya, The Cryosphere, 10, 133–148, https://doi.org/10.5194/tc-10-133-2016, 2016.
Radić, V. and Hock, R.: Regionally differentiated contribution of
mountain glaciers and ice caps to future sea-level rise, Nat. Geosci., 4,
91–94, https://doi.org/10.1038/ngeo1052, 2011.
Rögnvaldsson, Ó., Bao, J. W., and Ólafsson, H.: Sensitivity
simulations of orographic precipitation with MM5 and comparison with
observations in Iceland during the Reykjanes Experiment, Meteorol. Z., 16,
87–98, https://doi.org/10.1127/0941-2948/2007/0181, 2007.
Røhr, P. C. and Killingtveit, Å.: Rainfall distribution on the slopes
of Mt. Kilimanjaro, Hydrolog. Sci. J., 48, 65–78,
https://doi.org/10.1623/hysj.48.1.65.43483, 2003.
Ryan, W. A., Doesken, N. J., and Fassnacht, S. R.: Evaluation of ultrasonic
snow depth sensors for US snow measurements, J. Atmos. Ocean. Tech., 25,
667–684, https://doi.org/10.1175/2007JTECHA947.1, 2008.
Sauter, T. and Galos, S. P.: Effects of local advection on the spatial sensible heat flux variation on a mountain glacier, The Cryosphere, 10, 2887–2905, https://doi.org/10.5194/tc-10-2887-2016, 2016.
Shaw, T. E., Brock, B. W., Fyffe, C. L., Pellicciotti, F., Rutter, N., and
Diotri, F.: Air temperature distribution and energy-balance modelling of a
debris-covered glacier, J. Glaciol., 62, 185–198, https://doi.org/10.1017/jog.2016.31,
2016.
Shea, J. M., Wagnon, P., Immerzeel, W. W., Biron, R., Brun, F., and
Pellicciotti, F.: A comparative high-altitude meteorological analysis from
three catchments in the Nepalese Himalaya, Int. J. Water Resour. D., 31,
174–200, https://doi.org/10.1080/07900627.2015.1020417, 2015.
Smith, R. B., Schafer, P., Kirshbaum, D. J., and Regina, E.: Orographic
precipitation in the tropics: Experiments in Dominica, J. Atmos. Sci., 66,
1698–1716, https://doi.org/10.1175/2008JAS2920.1, 2009.
Steffen, K., Huff, N. C. R., Starkweather, S., Albert, T., and McAllister,
M.: Variability and forcing of climate parameters on the Greenland Ice
Sheet: Greenland climate Network (GC-NET), Annual Progress Report
NAG5-10857, National Aeronautics and Space Administration, USA, 2002.
Troll, C. and Wien K.: Der Lewis Gletscher am Mount Kenia, Geogr. Ann., 31,
257–274, https://doi.org/10.2307/520369, 1949.
Vizcaíno, M., Mikolajewicz, U., Jungclaus, J., and Schurgers, G.:
Climate modification by future ice sheet changes and consequences for ice
sheet mass balance, Clim. Dynam., 34, 301–324,
https://doi.org/10.1007/s00382-009-0591-y, 2010.
Wang, C. C. and Kirshbaum, D. J.: Thermally forced convection over a
mountainous tropical island, J. Atmos. Sci., 72, 2484–2506,
https://doi.org/10.1175/JAS-D-14-0325.1, 2015.
Winkler, M., Prinz, R., Nicholson, L., Cullen, N., and Kinnard, C.:
Ice-mounted masts as platforms for micro-meteorological measurements on
glaciers, in: Workshop on the use of automatic measuring systems on
glaciers: Extended abstracts and recommendations, IASC Workshop, Pontresina,
Switzerland, 23–26 March 2011, 88–91, 2011.
Short summary
The glaciers on Kilimanjaro summit are like sample spots of the climate in the tropical mid-troposphere. Measurements of air temperature, air humidity, and precipitation with automated weather stations show that the differences in these meteorological elements between two altitudes (~ 5600 and ~ 5900 m) vary significantly over the day and the seasons, in concert with airflow dynamics around the mountain. Knowledge of these variations will improve atmosphere and cryosphere models.
The glaciers on Kilimanjaro summit are like sample spots of the climate in the tropical...
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