气候变化领域集成服务门户(CCPortal): Intercomparison of precipitation datasets for summer precipitation characteristics over East Asia

CCPortal

DOI	10.1007/s00382-018-4303-3
	Intercomparison of precipitation datasets for summer precipitation characteristics over East Asia
	Kim K.-Y.; Kim J.; Boo K.-O.; Shim S.; Kim Y.
发表日期	2019
ISSN	0930-7575
起始页码	3005
结束页码	3022
卷号	52 期号:2020-05-06
英文摘要	Precipitation data in the Global Precipitation Climatology Project (GPCP) and in four reanalysis datasets, ERA-Interim, MERRA, NCEP/NCAR, and JRA, are compared against the CPC Merged Precipitation (CMAP) in the cyclostationary empirical orthogonal function (CSEOF) space to evaluate these datasets in representing the summer precipitation characteristics over East Asia. CSEOF analysis is applied to each dataset, and regression analysis is performed in the CSEOF space with the CMAP data as the target. The regression analysis establishes one-to-one correspondence between the CSEOF loading vectors of the target variable and those of the predictors, i.e., GPCP and the four reanalysis datasets. The loading vectors of the GPCP data coincide almost exactly with those of the CMAP data, i.e., the two observation-based precipitation datasets represent practically identical summer precipitation characteristics over East Asia. The reanalysis datasets also reproduce the first five CSEOF modes reasonably; however, performance of NCEP/NCAR is notably lower than others. The re-constructed precipitation using the first five regressed CSEOF modes of the reanalysis datasets are well correlated with that of the CMAP data with reasonably large correlation coefficients, suggesting that these reanalysis precipitation products reliably simulate the major summer precipitation characteristics in East Asia. All of the four reanalysis products commonly show noticeable errors in representing the summer rainfall over the mid-latitude ocean to the south of Japan, the tropical western Pacific, tropical/subtropical regions including the Indochina Peninsula, India, the Maritime Continent, and regions of complex terrain especially those characterized by strong orographic slopes around the Tibetan Plateau. The errors over the regions of complex orography and coastal lines may be partially due to the inability of reanalysis models in simulating the effects of complex terrain and the lack of observations in these sparsely populated regions. © 2018, The Author(s).
语种	英语
scopus关键词	complex terrain; correlation; orography; precipitation (climatology); rainfall; regression analysis; summer; China; Indochina; Japan; Pacific Ocean; Pacific Ocean (West); Qinghai-Xizang Plateau
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146474
作者单位	School of Earth and Environmental Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea; National Institute of Meteorological Sciences, Korean Meteorological Administration, Seogwipo-si, Jeju-do, South Korea
推荐引用方式 GB/T 7714	Kim K.-Y.,Kim J.,Boo K.-O.,et al. Intercomparison of precipitation datasets for summer precipitation characteristics over East Asia[J],2019,52(2020-05-06).
APA	Kim K.-Y.,Kim J.,Boo K.-O.,Shim S.,&Kim Y..(2019).Intercomparison of precipitation datasets for summer precipitation characteristics over East Asia.Climate Dynamics,52(2020-05-06).
MLA	Kim K.-Y.,et al."Intercomparison of precipitation datasets for summer precipitation characteristics over East Asia".Climate Dynamics 52.2020-05-06(2019).