Reasons for the Extremely High-Ranging Planetary Boundary Layer over the Western Tibetan Plateau in Winter

doi:10.1175/JAS-D-15-0148.1

	Reasons for the Extremely High-Ranging Planetary Boundary Layer over the Western Tibetan Plateau in Winter
	Li, MS (Li, Maoshan)2,5; Skerlak, B (Skerlak, Bojan)6; Rotach, MW (Rotach, Mathias W.)7; Anel, JA (Anel, Juan A.)1,8; Su, Z (Su, Zhonbgo)5; Ma, YM (Ma, Yaoming)3,4; Chen, XL ; Chen, XL (Chen, Xuelong)5
刊名	JOURNAL OF THE ATMOSPHERIC SCIENCES
	2016
卷号	73 期号:5 页码:2021-2038
关键词	Numerical Weather Prediction Large-scale Subsidence Asian Summer Monsoon Observational Evidence Residual Layer Land-surface Evolution China Model Height
DOI	10.1175/JAS-D-15-0148.1
文献子类	Article
英文摘要	The planetary boundary layer (PBL) over the Tibetan Plateau (with a mean elevation about 4 km above sea level) reaches an unmatched height of 9515 m above sea level. The proximity of this height to the tropopause facilitates an exchange between the stratosphere and the boundary layer. However, the underlying mechanisms responsible for this unique PBL have remained uncertain. Here, the authors explore these mechanisms and their relative importance using measurements of the PBL, the associated surface fluxes, and single-column and regional numerical simulations, as well as global reanalysis data. Results indicate that the dry conditions of both ground soil and atmosphere in late winter cannot explain the special PBL alone. Rather, the results from a single-column model demonstrate the key influence of the stability of the free atmosphere upon the growth of extremely deep PBLs over the Tibetan Plateau. Simulations with the numerical weather prediction model Consortium for Small-Scale Modelling (COSMO) exhibit good correspondence with the observed mean PBL structure and realistic turbulent kinetic energy distributions throughout the PBL. Using ERA-Interim, the authors furthermore find that weak atmospheric stability and the resultant deep PBLs are associated with higher upper-level potential vorticity (PV) values, which in turn correspond to a more southerly jet position and higher wind speeds. Upper-level PV structures and jet position thus influence the PBL development over the Tibetan Plateau.
学科主题	自然地理学
语种	英语
WOS记录号	WOS:000375952700010
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/7703]
专题	青藏高原研究所_图书馆
通讯作者	Chen, XL
作者单位	1.Univ Oxford, Smith Sch Enterprise & Environm, Oxford, England 2.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing, Peoples R China 5.Univ Twente, Fac Geoinformat Sci & Earth Observat, Hengelostr 99, NL-7500 AE Enschede, Netherlands 6.ETH, Inst Atmospher & Climate Sci, Zurich, Switzerland 7.Univ Innsbruck, Inst Atmospher & Cryospher Sci, A-6020 Innsbruck, Austria 8.Univ Vigo, Fac Sci, Environm Phys Lab, Orense, Spain
推荐引用方式 GB/T 7714	Li, MS ,Skerlak, B ,Rotach, MW ,et al. Reasons for the Extremely High-Ranging Planetary Boundary Layer over the Western Tibetan Plateau in Winter[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2016,73(5):2021-2038.
APA	Li, MS .,Skerlak, B .,Rotach, MW .,Anel, JA .,Su, Z .,...&Chen, XL .(2016).Reasons for the Extremely High-Ranging Planetary Boundary Layer over the Western Tibetan Plateau in Winter.JOURNAL OF THE ATMOSPHERIC SCIENCES,73(5),2021-2038.
MLA	Li, MS ,et al."Reasons for the Extremely High-Ranging Planetary Boundary Layer over the Western Tibetan Plateau in Winter".JOURNAL OF THE ATMOSPHERIC SCIENCES 73.5(2016):2021-2038.