气候变化领域集成服务门户(CCPortal): Spatial-Temporal Distribution of Tropospheric Specific Humidity in the Arid Region of Northwest China

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DOI	10.3390/atmos12030349
	Spatial-Temporal Distribution of Tropospheric Specific Humidity in the Arid Region of Northwest China
	Zhang, Hao; Sun, Meiping; Yao, Xiaojun; Wang, Zhilan; Zhang, Lei
通讯作者	Sun, MP (通讯作者)，Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China. ; Sun, MP (通讯作者)，Univ Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期	2021
EISSN	2073-4433
卷号	12 期号:3
英文摘要	Based on the atmospheric temperature and dew point temperature difference series of mandatory levels in the arid region of northwest China, we calculated the specific humidity of stations at 200, 300, 400, 500, 700, and 850 hPa and analyzed the spatial and temporal distribution. The specific humidity of radiosonde is compared with two sets of reanalysis data (ERA-interim from European Centre for Medium Range Weather Forecasts and Modern Era Retrospective Analysis for Research and Applications: MERRA-2). The annual specific humidity and summer specific humidity show a positive trend in the vertical atmospheric levels during the period 1958-2018. Taking the middle of the 1980s and 2002 as boundaries, the selected levels show the trend of declining-gentle rising-fluctuation rising. The maximum specific humidity is observed at the level of 850-700 hPa during the warm months of the year, and the most vertical expansion in specific humidity is in July. In terms of spatial distribution, the specific humidity is greatly influenced by the topography and underlying surface at lower levels. The characteristics of spatial distribution of the trend are well described by the two sets of reanalysis data in the middle and upper levels, but there are some deficiencies in depicting the trend in the lower levels.
关键词	MOISTURE BUDGET
英文关键词	Northwest China; troposphere; specific humidity; spatial and temporal distribution
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000633346800001
来源期刊	ATMOSPHERE
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/253918
作者单位	[Zhang, Hao; Sun, Meiping; Yao, Xiaojun; Wang, Zhilan; Zhang, Lei] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China; [Sun, Meiping] Univ Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hao,Sun, Meiping,Yao, Xiaojun,et al. Spatial-Temporal Distribution of Tropospheric Specific Humidity in the Arid Region of Northwest China[J]. 中国科学院西北生态环境资源研究院,2021,12(3).
APA	Zhang, Hao,Sun, Meiping,Yao, Xiaojun,Wang, Zhilan,&Zhang, Lei.(2021).Spatial-Temporal Distribution of Tropospheric Specific Humidity in the Arid Region of Northwest China.ATMOSPHERE,12(3).
MLA	Zhang, Hao,et al."Spatial-Temporal Distribution of Tropospheric Specific Humidity in the Arid Region of Northwest China".ATMOSPHERE 12.3(2021).