DOI: 10.1175/JCLI-D-17-0773.1
Scopus记录号: 2-s2.0-85047056470
论文题名: Diurnal cycle of surface air temperature within China in current reanalyses: Evaluation and diagnostics
作者: Du J. ; Wang K. ; Wang J. ; Jiang S. ; Zhou C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 11 起始页码: 4585
结束页码: 4603
语种: 英语
英文关键词: Atmosphere-land interaction
; Reanalysis data
; Shortwave radiation
; Surface temperature
Scopus关键词: Global warming
; Atmosphere-land interactions
; Atmospheric interaction
; Diurnal temperature ranges
; Reanalysis
; Research and application
; Short-wave radiation
; Surface air temperatures
; Surface temperatures
; Atmospheric temperature
; air temperature
; annual variation
; climate feedback
; diurnal variation
; global warming
; shortwave radiation
; solar radiation
; surface temperature
; temperature profile
; trend analysis
; weather forecasting
; China
英文摘要: Diurnal cycle of surface air temperature T is an important metric indicating the feedback of land-atmospheric interaction to global warming, whereas the ability of current reanalyses to reproduce its variation had not been assessed adequately. Here, we evaluate the daily maximum temperature Tmax, daily minimum temperature Tmin, and diurnal temperature range (DTR) in five reanalyses based on observations collected at 2253 weather stations over China. Our results show that the reanalyses reproduce Tmin very well; however, except for Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2), they substantially underestimate Tmax and DTR by 1.21°-6.84°C over China during the period of 1980-2014. MERRA-2 overestimates Tmax and DTR by 0.35° and 0.81°C, which are closest with observation. The reanalyses are skillful in reproducing the interannual variability of Tmax and Tmin but relatively poor for DTR. All reanalyses underestimate the warming trend of Tmin by 0.13°-0.17°C (10 yr)-1 throughout China during 1980-2014, and underestimate the warming trend of Tmax by 0.24°-0.40°C (10 yr)-1 in northwestern China while overestimating this quantity by 0.18°-0.33°C (10 yr)-1 in southeastern China. These trend biases in Tmax and Tmin introduce a positive trend bias in DTR of 0.01°-0.26°C (10 yr)-1 within China, especially in the north China plain and southeastern China. In the five reanalyses, owing to the sensitivity discrepancies and trend biases, the surface solar radiation Rs and precipitation frequency (PF) are notable deviation sources of the diurnal cycle of air temperature, which explain 31.0%-38.7% (31.9%-37.8%) and 9.8%-22.2% (7.4%-15.3%) of the trend bias in Tmax (DTR) over China, respectively. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111520
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Chinese Meteorological Administration, Beijing, China
Recommended Citation:
Du J.,Wang K.,Wang J.,et al. Diurnal cycle of surface air temperature within China in current reanalyses: Evaluation and diagnostics[J]. Journal of Climate,2018-01-01,31(11)