Spatio-temporal variability of vertical gradients of major meteorological observations around the Tibetan Plateau

doi:10.1002/joc.4468

	Spatio-temporal variability of vertical gradients of major meteorological observations around the Tibetan Plateau
	Tian, LD (Tian, Lide)2,3; Guo, XY ; Wang, L (Wang, Lei)2,3; Guo, XY (Guo, Xiaoyu)1,2
刊名	INTERNATIONAL JOURNAL OF CLIMATOLOGY
	2016
卷号	36 期号:4 页码:1901-1916
关键词	Temperature Lapse Rates Glacier Mass-balance Summer Monsoon Spatial Interpolation Surface Temperature Hydrological Model Air Temperatures Northern England Precipitation Climate
DOI	10.1002/joc.4468
文献子类	Article
英文摘要	The near-surface air temperature lapse rate (TLR), wind speed gradient (WSG), and precipitation gradient (PG) provide crucial parameters used in models of mountain climate and hydrology. The complex mountain terrain and vast area of the Tibetan Plateau (TP) make such factors particularly important. With daily data from 161 meteorological stations over the past 43 years (1970-2012), we analyse the spatio-temporal variations of TLRs, WSGs, and PGs over and around TP, derived using linear regression methods and dividing the study area into zones based on spatial variations. Results of this study include: (1) The observed TLR varies from -0.46 to -0.73 degrees C (100 m)(-1), with averaged TLRs of -0.60, -0.62, and -0.59 degrees C (100 m)(-1) for T-max, T-min, and T-mean, respectively. The averaged TLR is slightly less than the global mean of -0.65 degrees C (100 m)(-1). The spatial variability of TLR relates to climate conditions, wherein the TLR increases in dry conditions and in cold months (October-April), while it lessens in humid regions and during warm months (May-September). (2) The estimated annual WSG ranges from 0.07 to 0.17 m s(-1) (100 m)(-1). Monthly WSGs show a marked seasonal shift, in which higher WSGs can be explained by the high intensity of prevailing wind. (3) Positive summer PGs vary from 12.08 in the central TP to 26.14 mm (100 m)(-1) in northeastern Qinghai and the southern TP, but a reverse gradient prevails in Yunnan and parts of Sichuan Province. (4) The regional warming over TP is more evident in winter, and T-min demonstrated the most prominent warming compared with T-max and T-mean. Environments at high elevations experience more rapid changes in temperatures (T-max, T-min, and T-mean) than those at low elevations, which is especially true in winter and for T-min. Furthermore, inter-annual variation of TLRs is linked to elevation-dependent warming.
学科主题	自然地理学
语种	英语
WOS记录号	WOS:000372036800025
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/7728]
专题	青藏高原研究所_图书馆
通讯作者	Guo, XY
作者单位	1.Univ Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Tian, LD ,Guo, XY,Wang, L ,et al. Spatio-temporal variability of vertical gradients of major meteorological observations around the Tibetan Plateau[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2016,36(4):1901-1916.
APA	Tian, LD ,Guo, XY,Wang, L ,&Guo, XY .(2016).Spatio-temporal variability of vertical gradients of major meteorological observations around the Tibetan Plateau.INTERNATIONAL JOURNAL OF CLIMATOLOGY,36(4),1901-1916.
MLA	Tian, LD ,et al."Spatio-temporal variability of vertical gradients of major meteorological observations around the Tibetan Plateau".INTERNATIONAL JOURNAL OF CLIMATOLOGY 36.4(2016):1901-1916.