Articles | Volume 12, issue 4
https://doi.org/10.5194/esd-12-1239-2021
© Author(s) 2021. 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-12-1239-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Wind speed stilling and its recovery due to internal climate variability
Climate Policy Group, Institute for Environmental Decisions, ETH Zürich, Zurich, Switzerland
Doris Folini
Institute for Atmospheric and Climate Science, ETH Zürich, Zurich, Switzerland
Bryn Pickering
Climate Policy Group, Institute for Environmental Decisions, ETH Zürich, Zurich, Switzerland
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Jan Wohland, Peter Hoffmann, Daniela C. A. Lima, Marcus Breil, Olivier Asselin, and Diana Rechid
Earth Syst. Dynam., 15, 1385–1400, https://doi.org/10.5194/esd-15-1385-2024, https://doi.org/10.5194/esd-15-1385-2024, 2024
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We evaluate how winds change when humans grow or cut down forests. Our analysis draws from climate model simulations with extreme scenarios where Europe is either fully forested or covered with grass. We find that the effect of land use change on wind energy is very important: wind energy potentials are twice as high above grass as compared to forest in some locations. Our results imply that wind profile changes should be better incorporated in climate change assessments for wind energy.
Charlotte Neubacher, Dirk Witthaut, and Jan Wohland
Adv. Geosci., 54, 205–215, https://doi.org/10.5194/adgeo-54-205-2021, https://doi.org/10.5194/adgeo-54-205-2021, 2021
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In our study, we investigate the variability of potential offshore wind power over Europe on time scales of more than 10 years. Detailed spectral analysis of potential offshore wind power capacities over the last century indicates a strong coupling to large climate patterns such as the NAO. Furthermore, combining the wind power potential at the German North Sea and the Portuguese Atlantic coast shows that the variability can be mitigated.
Jan Wohland, Nour Eddine Omrani, Noel Keenlyside, and Dirk Witthaut
Wind Energ. Sci., 4, 515–526, https://doi.org/10.5194/wes-4-515-2019, https://doi.org/10.5194/wes-4-515-2019, 2019
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Wind park planning and power system design require robust wind resource information. While most assessments are restricted to the last four decades, we use centennial reanalyses to study wind energy generation variability in Germany. We find that statistically significant multi-decadal variability exists. These long-term effects must be considered when planning future highly renewable power systems. Otherwise, there is a risk of inefficient system design and ill-informed investments.
Jan Wohland, Mark Reyers, Juliane Weber, and Dirk Witthaut
Earth Syst. Dynam., 8, 1047–1060, https://doi.org/10.5194/esd-8-1047-2017, https://doi.org/10.5194/esd-8-1047-2017, 2017
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Solar and wind energy generation are weather dependent and can not be switched on when needed. Despite this, stable electricity supply can be obtained by aggregation over large areas, for example Europe. However, we show that strong climate change impedes spatial balancing of electricity because countries are more likely to suffer from simultaneous generation shortfall. As a consequence, local scarcity can less often be balanced by imports.
Jan Wohland, Peter Hoffmann, Daniela C. A. Lima, Marcus Breil, Olivier Asselin, and Diana Rechid
Earth Syst. Dynam., 15, 1385–1400, https://doi.org/10.5194/esd-15-1385-2024, https://doi.org/10.5194/esd-15-1385-2024, 2024
Short summary
Short summary
We evaluate how winds change when humans grow or cut down forests. Our analysis draws from climate model simulations with extreme scenarios where Europe is either fully forested or covered with grass. We find that the effect of land use change on wind energy is very important: wind energy potentials are twice as high above grass as compared to forest in some locations. Our results imply that wind profile changes should be better incorporated in climate change assessments for wind energy.
Lucas Ferreira Correa, Doris Folini, Boriana Chtirkova, and Martin Wild
Atmos. Chem. Phys., 24, 8797–8819, https://doi.org/10.5194/acp-24-8797-2024, https://doi.org/10.5194/acp-24-8797-2024, 2024
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We investigated the causes of the decadal trends of solar radiation measured at 34 stations in Brazil in the first 2 decades of the 21st century. We observed strong negative trends in north and northeast Brazil associated with changes in both atmospheric absorption (anthropogenic) and cloud cover (natural). In other parts of the country no strong trends were observed as a result of competing effects. This provides a better understanding of the energy balance in the region.
Xinyuan Hou, Martin Wild, Doris Folini, Stelios Kazadzis, and Jan Wohland
Earth Syst. Dynam., 12, 1099–1113, https://doi.org/10.5194/esd-12-1099-2021, https://doi.org/10.5194/esd-12-1099-2021, 2021
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Solar photovoltaics (PV) matters for the carbon neutrality goal. We use climate scenarios to quantify climate risk for PV in Europe and find higher PV potential. The seasonal cycle of PV generation changes in most places. We find an increase in the spatial correlations of daily PV production, implying that PV power balancing through redistribution will be more difficult in the future. Thus, changes in the spatiotemporal structure of PV generation should be included in power system design.
Charlotte Neubacher, Dirk Witthaut, and Jan Wohland
Adv. Geosci., 54, 205–215, https://doi.org/10.5194/adgeo-54-205-2021, https://doi.org/10.5194/adgeo-54-205-2021, 2021
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In our study, we investigate the variability of potential offshore wind power over Europe on time scales of more than 10 years. Detailed spectral analysis of potential offshore wind power capacities over the last century indicates a strong coupling to large climate patterns such as the NAO. Furthermore, combining the wind power potential at the German North Sea and the Portuguese Atlantic coast shows that the variability can be mitigated.
Jan Wohland, Nour Eddine Omrani, Noel Keenlyside, and Dirk Witthaut
Wind Energ. Sci., 4, 515–526, https://doi.org/10.5194/wes-4-515-2019, https://doi.org/10.5194/wes-4-515-2019, 2019
Short summary
Short summary
Wind park planning and power system design require robust wind resource information. While most assessments are restricted to the last four decades, we use centennial reanalyses to study wind energy generation variability in Germany. We find that statistically significant multi-decadal variability exists. These long-term effects must be considered when planning future highly renewable power systems. Otherwise, there is a risk of inefficient system design and ill-informed investments.
Jan Wohland, Mark Reyers, Juliane Weber, and Dirk Witthaut
Earth Syst. Dynam., 8, 1047–1060, https://doi.org/10.5194/esd-8-1047-2017, https://doi.org/10.5194/esd-8-1047-2017, 2017
Short summary
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Solar and wind energy generation are weather dependent and can not be switched on when needed. Despite this, stable electricity supply can be obtained by aggregation over large areas, for example Europe. However, we show that strong climate change impedes spatial balancing of electricity because countries are more likely to suffer from simultaneous generation shortfall. As a consequence, local scarcity can less often be balanced by imports.
Martin Wild, Atsumu Ohmura, Christoph Schär, Guido Müller, Doris Folini, Matthias Schwarz, Maria Zyta Hakuba, and Arturo Sanchez-Lorenzo
Earth Syst. Sci. Data, 9, 601–613, https://doi.org/10.5194/essd-9-601-2017, https://doi.org/10.5194/essd-9-601-2017, 2017
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The Global Energy Balance Archive (GEBA) is a database for the central storage of worldwide measured energy fluxes at the Earth's surface, maintained at ETH Zurich (Switzerland). This paper documents the status of the GEBA version 2017 database, presents the new web interface and user access, and reviews the scientific impact that GEBA data had in various applications. GEBA has continuously been expanded and updated and to date contains around 500 000 monthly mean entries from 2500 locations.
Katsumasa Tanaka, Atsumu Ohmura, Doris Folini, Martin Wild, and Nozomu Ohkawara
Atmos. Chem. Phys., 16, 13969–14001, https://doi.org/10.5194/acp-16-13969-2016, https://doi.org/10.5194/acp-16-13969-2016, 2016
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Surface solar radiation observed in Japan generally shows a strong decline until the end of the 1980s and then a recovery up until around 2000. A substantial number of measurement stations are located close to populated areas and are speculated to have been influenced by air pollution. However, data obtained at 14 meteorological observatories suggest that the large decadal variations in surface solar radiation occur on a large scale and not limited to urban areas.
Adel Imamovic, Katsumasa Tanaka, Doris Folini, and Martin Wild
Atmos. Chem. Phys., 16, 2719–2725, https://doi.org/10.5194/acp-16-2719-2016, https://doi.org/10.5194/acp-16-2719-2016, 2016
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Systematic measurements of surface solar radiation revealed a worldwide decrease from the 1960s to the mid-1980s. The role of urbanization for this so called global dimming is still under debate. We developed a set of population-data based urbanization indicators and found no correlation between urbanization and global dimming for Europe and Japan, while an urbanization impact can't be precluded for Asia. It is thus called into question whether the global dimming was mainly a local phenomenon.
M. Calisto, D. Folini, M. Wild, and L. Bengtsson
Ann. Geophys., 32, 793–807, https://doi.org/10.5194/angeo-32-793-2014, https://doi.org/10.5194/angeo-32-793-2014, 2014
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Management of the Earth system: renewable energy
Climate change impacts on solar power generation and its spatial variability in Europe based on CMIP6
More homogeneous wind conditions under strong climate change decrease the potential for inter-state balancing of electricity in Europe
The problem of the second wind turbine – a note on a common but flawed wind power estimation method
Jet stream wind power as a renewable energy resource: little power, big impacts
Estimating maximum global land surface wind power extractability and associated climatic consequences
Xinyuan Hou, Martin Wild, Doris Folini, Stelios Kazadzis, and Jan Wohland
Earth Syst. Dynam., 12, 1099–1113, https://doi.org/10.5194/esd-12-1099-2021, https://doi.org/10.5194/esd-12-1099-2021, 2021
Short summary
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Solar photovoltaics (PV) matters for the carbon neutrality goal. We use climate scenarios to quantify climate risk for PV in Europe and find higher PV potential. The seasonal cycle of PV generation changes in most places. We find an increase in the spatial correlations of daily PV production, implying that PV power balancing through redistribution will be more difficult in the future. Thus, changes in the spatiotemporal structure of PV generation should be included in power system design.
Jan Wohland, Mark Reyers, Juliane Weber, and Dirk Witthaut
Earth Syst. Dynam., 8, 1047–1060, https://doi.org/10.5194/esd-8-1047-2017, https://doi.org/10.5194/esd-8-1047-2017, 2017
Short summary
Short summary
Solar and wind energy generation are weather dependent and can not be switched on when needed. Despite this, stable electricity supply can be obtained by aggregation over large areas, for example Europe. However, we show that strong climate change impedes spatial balancing of electricity because countries are more likely to suffer from simultaneous generation shortfall. As a consequence, local scarcity can less often be balanced by imports.
F. Gans, L. M. Miller, and A. Kleidon
Earth Syst. Dynam., 3, 79–86, https://doi.org/10.5194/esd-3-79-2012, https://doi.org/10.5194/esd-3-79-2012, 2012
L. M. Miller, F. Gans, and A. Kleidon
Earth Syst. Dynam., 2, 201–212, https://doi.org/10.5194/esd-2-201-2011, https://doi.org/10.5194/esd-2-201-2011, 2011
L. M. Miller, F. Gans, and A. Kleidon
Earth Syst. Dynam., 2, 1–12, https://doi.org/10.5194/esd-2-1-2011, https://doi.org/10.5194/esd-2-1-2011, 2011
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Short summary
Surface winds fluctuate. From around 1980 to 2010, surface onshore winds generally became weaker, and they have gained in strength since then. While these fluctuations are well known, we currently do not fully understand why they happen. To investigate the reasons, we use a large set of climate simulations with one model, a so-called large ensemble. We find that the observed long-term wind fluctuations occur naturally under current and future conditions and do not require a specific trigger.
Surface winds fluctuate. From around 1980 to 2010, surface onshore winds generally became...
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