气候变化领域集成服务门户(CCPortal): Estimating near-surface climatology of multi-reanalyses over the Greenland Ice Sheet

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DOI	10.1016/j.atmosres.2021.105676
	Estimating near-surface climatology of multi-reanalyses over the Greenland Ice Sheet
	Zhang W.; Wang Y.; Smeets P.C.J.P.; Reijmer C.H.; Huai B.; Wang J.; Sun W.
发表日期	2021
ISSN	0169-8095
卷号	259
英文摘要	This study uses meteorological records from Automatic Weather Stations (AWSs) to estimate the performance of global reanalysis products for monthly air temperature, relative humidity and wind speed over the Greenland Ice Sheet (GrIS). These products include the fifth generation European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA5), ECMWF Interim Reanalysis (ERAI), Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2), Climate Forecast System Reanalysis Version 1/Climate Forecast System Version 2 (CFSRv1/CFSRv2), and Japanese 55-year Reanalysis (JRA-55). The global reanalysis products generally perform better in summer than in winter, and their qualities vary by glaciological regime. No reanalysis is clearly identified as the optimal dataset for all meteorological parameters, seasons and regions. For all reanalyses, warm biases are observed in the accumulation zone, but cold biases are observed in the ablation area of the GrIS. ERAI, ERA5 and JRA-55 underestimate relative humidity during any month. While MERRA-2 overestimates wind speeds, underestimates are found for the other reanalyses excluding JRA-55 during all months. Despite the robust agreement between the AWS time series for all three variables and each reanalysis product averaged over the ice sheet, sudden jumps occur in annual mean wind speed in CFSR, and in annual relative humidity in JRA-55 from 2010 to 2011. © 2021 Elsevier B.V.
英文关键词	Air temperature; Greenland Ice Sheet; Reanalysis products; Relative humidity; Wind speed
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236704
作者单位	College of Geography and Environment, Shandong Normal University, Jinan, 250014, China; Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Zhang W.,Wang Y.,Smeets P.C.J.P.,et al. Estimating near-surface climatology of multi-reanalyses over the Greenland Ice Sheet[J],2021,259.
APA	Zhang W..,Wang Y..,Smeets P.C.J.P..,Reijmer C.H..,Huai B..,...&Sun W..(2021).Estimating near-surface climatology of multi-reanalyses over the Greenland Ice Sheet.Atmospheric Research,259.
MLA	Zhang W.,et al."Estimating near-surface climatology of multi-reanalyses over the Greenland Ice Sheet".Atmospheric Research 259(2021).