b.geos GmbH (AT)
The Arctic is warming more than twice as fast as the global average, making climate change’s polar effects more intense than anywhere else in the world. The Arctic accounts for half of the organic carbon stored in soils. There is high confidence that the thaw of terrestrial permafrost will lead to carbon release, but only low confidence regarding timing, magnitude and relative role of CO2 versus CH4 according to the sixth assessment report of IPCC (2021). There is general consensus that these issues can be tackled through support by satellite observations, but this has not been fully exploited to date. The recently inaugurated Arctic Methane and Permafrost Challenge (AMPAC) strives to address these questions inter alia through making use of synergistic measurements, activities to improve satellite retrievals with a clear focus on high latitudes, and promoting new dedicated satellite sensors as well as improving validation of existing and upcoming satellite missions.
Bartsch, A., Khairullin,R., Efimova, A., Widhalm, B., Muri, X., von Baeckmann, C., Bergstedt, H.,Ermokhina, K., Hugelius, G., Heim, B., Leibman, M., & Gruber, C. (2024). CircumarcticLandcover Units (2.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.14235736
Benchmarking passive-microwave-satellite-derived freeze-thaw datasets
Cryosphere (2025)
Benchmarking passive-microwave-satellite-derived freeze-thaw datasets
Cryosphere (2025)
Advancing the Arctic Methane Permafrost Challenge (AMPAC) With Future Satellite Missions
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (2025)
Advancing the Arctic Methane Permafrost Challenge (AMPAC) With Future Satellite Missions
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (2025)
Permafrost and Freshwater Systems in the Arctic as Tipping Elements of the Climate System
Surveys in Geophysics (2025)
Permafrost and Freshwater Systems in the Arctic as Tipping Elements of the Climate System
Surveys in Geophysics (2025)
Global Biogeochemical Cycles (2024)
Circumarctic land cover diversity considering wetness gradients
Hydrology and Earth System Sciences (2024)
Remotely sensing potential climate change tipping points across scales
Nature Communications (2024)
The Cryosphere (2024)