Articles | Volume 13, issue 8
The Cryosphere, 13, 2087–2110, 2019
https://doi.org/10.5194/tc-13-2087-2019
The Cryosphere, 13, 2087–2110, 2019
https://doi.org/10.5194/tc-13-2087-2019
Research article
01 Aug 2019
Research article | 01 Aug 2019

Permafrost variability over the Northern Hemisphere based on the MERRA-2 reanalysis

Jing Tao et al.

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Cited articles

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Anisimov, O. A.: Potential feedback of thawing permafrost to the global climate system through methane emission, Environ. Res. Lett., 2, 045016, https://doi.org/10.1088/1748-9326/2/4/045016, 2007. 
Anisimov, O. A., Lobanov, V. A., Reneva, S. A., Shiklomanov, N. I., Zhang, T., and Nelson, F. E.: Uncertainties in gridded air temperature fields and effects on predictive active layer modeling, J. Geophys. Res.-Earth, 112, F02S14, https://doi.org/10.1029/2006JF000593, 2007. 
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Short summary
The active layer thickness (ALT) in middle-to-high northern latitudes from 1980 to 2017 was produced at 81 km2 resolution by a global land surface model (NASA's CLSM) with forcing fields from a reanalysis data set, MERRA-2. The simulated permafrost distribution and ALTs agree reasonably well with an observation-based map and in situ measurements, respectively. The accumulated above-freezing air temperature and maximum snow water equivalent explain most of the year-to-year variability of ALT.