气候变化领域集成服务门户(CCPortal): Comparison of NCEP/NCAR and ERA-40 total cloud cover with surface observations over the Tibetan Plateau

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DOI	10.1002/joc.3852
	Comparison of NCEP/NCAR and ERA-40 total cloud cover with surface observations over the Tibetan Plateau
	You, Qinglong; Jiao, Yang; Lin, Houbo; Min, Jinzhong; Kang, Shichang; Ren, Guoyu; Meng, Xianhong
发表日期	2014
ISSN	0899-8418
EISSN	1097-0088
卷号	34 期号:8
英文摘要	The annual and seasonal total cloud cover (TCC) variations in the eastern and central Tibetan Plateau (TP) during 1961-2005 are analysed using 71 surface observational stations. The mean TCC decreases from the southeastern to the northwestern TP, consistent with the patterns of atmospheric moisture in the region. The annual mean TCC shows a significant decreasing trend of -0.09 percentdecade-1, mainly contributed by winter. About 65% of the stations show significant downward trends on the annual basis with large trend magnitudes occurring in the central TP. The seasonal patterns confirm the annual patterns in most cases. Compared with the surface observations, both National Center for Environmental Prediction/National Center for Atmospheric Research reanalysis (NCEP/NCAR) (1961-2005) and ERA-40 (1961-2001) can reproduce the decreasing TCC trends. The shift of TCC before and after the mid-1980s is obvious in observations and both reanalyses, reflecting the changes of large-scale atmospheric circulation. However, NCEP/NCAR underestimates and ERA-40 overestimates observations on the annual and seasonal basis, presumably caused by the different cloud parameterization schemes. A Taylor diagram diagnose summarizes the discrepancies between observations and reanalyses.
关键词	total cloud cover NCEP NCAR and ERA-40 Tibetan Plateau
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111717
作者单位	Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	You, Qinglong,Jiao, Yang,Lin, Houbo,et al. Comparison of NCEP/NCAR and ERA-40 total cloud cover with surface observations over the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2014,34(8).
APA	You, Qinglong.,Jiao, Yang.,Lin, Houbo.,Min, Jinzhong.,Kang, Shichang.,...&Meng, Xianhong.(2014).Comparison of NCEP/NCAR and ERA-40 total cloud cover with surface observations over the Tibetan Plateau.INTERNATIONAL JOURNAL OF CLIMATOLOGY,34(8).
MLA	You, Qinglong,et al."Comparison of NCEP/NCAR and ERA-40 total cloud cover with surface observations over the Tibetan Plateau".INTERNATIONAL JOURNAL OF CLIMATOLOGY 34.8(2014).