globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-16-0227.1
Scopus记录号: 2-s2.0-85008627289
论文题名:
Precipitation over monsoon Asia: A comparison of reanalyses and observations
作者: Ceglar A.; Toreti A.; Balsamo G.; Kobayashi S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:2
起始页码: 465
结束页码: 476
语种: 英语
Scopus关键词: Agriculture ; Atmospheric thermodynamics ; Drought ; Gages ; Precipitation (meteorology) ; Rain gages ; Extreme events ; Model comparison ; Monsoons ; Reanalysis ; Seasonal cycle ; Rain ; comparative study ; drought ; environmental modeling ; environmental monitoring ; extreme event ; monsoon ; observational method ; precipitation (climatology) ; raingauge ; regional climate ; satellite data ; seasonal variation ; Asia
英文摘要: Reanalysis products represent a valuable source of information for different impact modeling and monitoring activities over regions with sparse observational data. It is therefore essential to evaluate their behavior and their intrinsic uncertainties. This study focuses on precipitation over monsoon Asia, a key agricultural region of the world. Four reanalysis datasets are evaluated, namely ERA-Interim, ERA-Interim/Land, AgMERRA (an agricultural version of MERRA), and JRA-55. APHRODITE and the Climate Hazards Group Infrared Precipitation with Stations (CHIRPS) dataset are the two gridded observational datasets used for the evaluation; the former is based on rain gauge data and the latter on a combination of satellite and rain gauge data. Differences in seasonality, moderate-to-heavy precipitation events, daily distribution, and drought characteristics are analyzed. Results show remarkable differences between the APHRODITE and CHIRPS observational datasets as well as between these datasets and the reanalyses. AgMERRA generally achieves the best performance, but it is not updated at near-real time. ERA-Interim/Land shows good spatial performance, but when the interest is on the temporal evolution JRA-55 is recommended, as it exhibits the most stable temporal behavior. This study shows that the use of reanalyses for impact modeling and monitoring over monsoon Asia requires an accurate evaluation and choices to be tailored to the specific needs. © 2017 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49834
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作者单位: European Commission, Joint Research Centre, Ispra, Italy; European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom; Japan Meteorological Agency, Tokyo, Japan

Recommended Citation:
Ceglar A.,Toreti A.,Balsamo G.,et al. Precipitation over monsoon Asia: A comparison of reanalyses and observations[J]. Journal of Climate,2017-01-01,30(2)
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