首页|Comprehensive evaluation of surface air temperature reanalysis over China against urbanization-bias-adjusted observations

Comprehensive evaluation of surface air temperature reanalysis over China against urbanization-bias-adjusted observations

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
The reanalysis datasets (CRA40) have now been developed in China Meteorological Administration.We aim to compare the differences in surface air temperature (SAT) between observational that has been adjusted for urbanization bias and reanalysis data (NCEPV1,NCEPV2,ERA5,CFSR,MERRA,JRA55,20CRV3 and CRA40) over mainland China during 1961-2015.The main results are presented as follows.The correlation and standard deviation between the reanalysis data and observations exhibit highly consistent interannual variability and dispersion,with the interannual SAT variability in JRA55 being closest to the observations for 1961-2015 and that of ERA5 for 1979-2015;the dis-persions of 20CRV3 is most consistent with the observations for 1961-2015 and that of NCEPV1 for 1979-2015.Although annual mean SAT of the reanalysis is generally 0-2.0 ℃ lower than the observations,the bias in the SAT climatology of 20CRV3 is the least for 1961-2015 in all reanalysis datasets and that of CRA40 is the least for 1979-2015.The trends of NCEPV1 is closer to the observations than other reanalysis for 1961-2015 and that of 20CRV3 for 1979-2015.The biases in terms of interannual variability,dispersion,climatology,and linear trend are increase with altitude.Overall,in terms of the similarity of multiple measures to the urbanization bias-adjusted observations,JRA55 and CRA40 show the best performances for the periods 1961-2015 and 1979-2015 respectively in reproducing various aspects of climatological and climate change features in mainland China.

TemperatureReanalysis dataUrbanization biasAdjusted observationsComparisonEvaluationChina

ZHANG Si-Qi、REN Guo-Yu、REN Yu-Yu、ZHANG Ying-Xian、XUE Xiao-Ying

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Department of Atmospheric Science,School of Environmental Studies,China University of Geosciences,Wuhan,430074,China

Laboratory for Climate Studies,National Climate Center,China Meteorological Administration,Beijing,100081,China

Key Laboratory for Cloud Physics,China Meteorological Administration,Beijing,100081,China

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaConstruction Project of Weather Modification in the Northwest ChinaNatural Science FoundationMeteorolog-ical Scientific Research in the Public InterestChina Three Gorges Corporation

2018YFA06056032020YFA0608203 ChinaRYSY201907 China41801017CRA-40 2015060020704181

2021

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2021.12(6)
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