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Title: Brief communication: Significant biases in ERA5 output for the McMurdo Dry Valleys region, Antarctica
Abstract. The ERA5 climate reanalysis dataset plays an important role in applications such as monitoring and modeling climate system changes in polar regions, so the calibration of the reanalysis to ground observations is of great relevance. Here, we compare the 2 m air temperature time series of the ERA5 reanalysis and the near-surface bias-corrected reanalysis to the near-ground air temperature measured at 17 automatic weather stations (AWSs) in the McMurdo Dry Valleys, Antarctica. We find that the reanalysis data have biases that change with the season of the year and do not clearly correlate with elevation. Our results show that future work should rely on secondary observations to calibrate when using the ERA5 reanalysis in polar regions.  more » « less
Award ID(s):
2224760
PAR ID:
10537625
Author(s) / Creator(s):
;
Publisher / Repository:
Copernicus Online Journals
Date Published:
Journal Name:
The Cryosphere
Volume:
18
Issue:
3
ISSN:
1994-0424
Page Range / eLocation ID:
1207 to 1213
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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