Controls of precipitation delta O-18 on the northwestern Tibetan Plateau: A case study at Ngari station
文献类型：期刊论文
| 作者 | Yu, WS (Yu, Wusheng)1,3; Tian, LD (Tian, Lide)1,2,3,4; Guo, XY (Guo, Xiaoyu)1,3,4; Tian, LD; Wen, R (Wen, Rong)1; Qu, DM (Qu, Dongmei)1 |
| 刊名 | ATMOSPHERIC RESEARCH
 |
| 出版日期 | 2017 |
| 卷号 | 189期号:0页码:141-151 |
| 关键词 | STABLE-ISOTOPE VARIATIONS AMERICAN TELECONNECTION CONTROLS HOLOCENE ENVIRONMENTAL-CHANGES CONTIGUOUS UNITED-STATES ATMOSPHERIC WATER-VAPOR BASIN WESTERN TIBET SUMMER MONSOON ICE-CORE ASIAN MONSOON MOISTURE TRANSPORT |
| DOI | 10.1016/j.atmosres.2017.02.004 |
| 文献子类 | Article |
| 英文摘要 | The shifting atmospheric circulation between the Indian monsoon and the westerlies on the northwestern Tibetan Plateau (TP) influences precipitation as well as precipitation isotopes. Isotopic records will therefore show historical fluctuations. To understand better the factors controlling present day precipitation delta O-18 values on the northwestern TP, we made continuous observations of precipitation isotopes at Ngari station from 2010 to 2013. The drivers of precipitation delta O-18 were investigated using analyses of their statistical relations with temperature, precipitation amount, relative humidity, and convective activities based on outgoing longwave radiation (OLR) data from NOAA satellites, and downward shortwave radiation (DSR) data collected at the Ngari automatic weather station. Atmospheric circulation patterns from NCAR reanalysis, and moisture transport paths of individual events derived from the HYSPLIT model using NCEP data, were also used to trace moisture sources. The results of our study include: (1) The slope and intercept of the Local Meteoric Water Line (LMWL) at Ngari (delta D = 8.51 delta O-18 + 11.57 (R-2 = 0.97, p < 0.01)) were higher than for the Global Meteoric Water Line (GMWL), indicating drier local climatic conditions; (2) Precipitation delta O-18 values showed a weak "temperature effect" and a weak "precipitation amount effect" at Ngari; and (3) Convection (or temperature patterns) integrated over several days (0-20) preceding each event were determined to be the main driver of precipitation isotopic values in monsoon (or non-monsoon) season. The longer (shorter) periods of tau(m) days when correlation coefficients between precipitation delta O-18 and OLR were at their maxima (minima) indicate deep convective activities (shorter moisture transportation pathways) in August (June, July, and September). (C) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | 自然地理学 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000398007400013 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8237]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Tian, LD |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China. 2.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650500, Peoples R China. 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yu, WS ,Tian, LD ,Guo, XY ,et al. Controls of precipitation delta O-18 on the northwestern Tibetan Plateau: A case study at Ngari station[J]. ATMOSPHERIC RESEARCH,2017,189(0):141-151. |
| APA | Yu, WS ,Tian, LD ,Guo, XY ,Tian, LD,Wen, R ,&Qu, DM .(2017).Controls of precipitation delta O-18 on the northwestern Tibetan Plateau: A case study at Ngari station.ATMOSPHERIC RESEARCH,189(0),141-151. |
| MLA | Yu, WS ,et al."Controls of precipitation delta O-18 on the northwestern Tibetan Plateau: A case study at Ngari station".ATMOSPHERIC RESEARCH 189.0(2017):141-151. |
入库方式： OAI收割
来源：青藏高原研究所
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