Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 16, issue 3
Articles | Volume 16, issue 3
https://doi.org/10.5194/esd-16-869-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-16-869-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 3
Research article
 | 
12 Jun 2025
Research article |  | 12 Jun 2025

Global relevance of atmospheric and land surface drivers for hot temperature extremes

Yigit Uckan, Melissa Ruiz-Vásquez, Kelley De Polt, and René Orth

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Short summary
We analyze drivers of hot temperature extremes, focusing on both atmospheric and land-surface factors. Using observation-based data and an analogue-based approach, we find that geopotential height at 500 hPa is the most significant driver worldwide at daily and weekly timescales. Surface net radiation and evaporative fraction play relevant roles at the daily scale and wind at the weekly timescale. The driver influence varies by region, related to differences in climate regimes and land cover.
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