Articles | Volume 18, issue 2
https://doi.org/10.5194/tc-18-609-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-609-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Feb 2024
Research article |
| 12 Feb 2024
| 12 Feb 2024
Recent warming trends of the Greenland ice sheet documented by historical firn and ice temperature observations and machine learning
Department of Glaciology and Climate, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
Robert S. Fausto
Department of Glaciology and Climate, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
Jason E. Box
Department of Glaciology and Climate, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
Federico Covi
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
Regine Hock
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
Department of Geosciences, University of Oslo, Oslo, Norway
Åsa K. Rennermalm
Department of Geography, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
Achim Heilig
Department of Earth and Environmental Sciences, Ludwig Maximilian University, Munich, Germany
Jakob Abermann
Department of Geography and Regional Sciences, University of Graz, Graz, Austria
Dirk van As
Department of Glaciology and Climate, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
Elisa Bjerre
Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
Xavier Fettweis
Department of Geography, University of Liège, Liège, Belgium
Paul C. J. P. Smeets
Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, the Netherlands
Peter Kuipers Munneke
Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, the Netherlands
Michiel R. van den Broeke
Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, the Netherlands
Max Brils
Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, the Netherlands
Peter L. Langen
Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
Ruth Mottram
Danish Meteorological Institute, Copenhagen, Denmark
Andreas P. Ahlstrøm
Department of Glaciology and Climate, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
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Cited
Latest update: 23 Nov 2024
Short summary
How fast is the Greenland ice sheet warming? In this study, we compiled 4500+ temperature measurements at 10 m below the ice sheet surface (T10m) from 1912 to 2022. We trained a machine learning model on these data and reconstructed T10m for the ice sheet during 1950–2022. After a slight cooling during 1950–1985, the ice sheet warmed at a rate of 0.7 °C per decade until 2022. Climate models showed mixed results compared to our observations and underestimated the warming in key regions.
How fast is the Greenland ice sheet warming? In this study, we compiled 4500+ temperature...
