Articles | Volume 14, issue 8
Research article
12 Aug 2020
Research article |  | 12 Aug 2020

The ERA5-Land soil temperature bias in permafrost regions

Bin Cao, Stephan Gruber, Donghai Zheng, and Xin Li

Data sets

Measurements in soil and air at Bayelva Station Julia Boike, Inge Juszak, Stephan Lange, Sarah Chadburn, Eleanor J. Burke, Pier Paul Overduin, Kurt Roth, Olaf Ippisch, Niko Bornemann, Lielle Stern, Isabelle Gouttevin, Ernst Hauber, and Sebastian Westermann

Measurements in soil and air at Samoylov Station (2002–2018), version 201908 Julia Boike, Jan Nitzbon, Katharina Anders, Mikhail N. Grigoriev, Dimitry Yu Bolshiyanov, Moritz Langer, Stephan Lange, Niko Bornemann, Anne Morgenstern, Peter Schreiber, Christian Wille, Sarah Chadburn, Isabelle Gouttevin, and Lars Kutzbach

DOI/GTN-P Climate and Active-Layer Data Acquired in the National Petroleum Reserve − Alaska and the Arctic National Wildlife Refuge, 1998−2015 F.E. Urban and G. D. Clow

Time-lapse observation dataset of soil temperature and humidity on the Tibetan Plateau (2008−2016) B. Su and K. Yang

Short summary
This study reports that ERA5-Land (ERA5L) soil temperature bias in permafrost regions correlates with the bias in air temperature and with maximum snow height. While global reanalyses are important drivers for permafrost study, ERA5L soil data are not well suited for directly informing permafrost research decision making due to their warm bias in winter. To address this, future soil temperature products in reanalyses will require permafrost-specific alterations to their land surface models.