Effect of a cold, dry air incursion on atmospheric boundary layer processes over a high-altitude lake in the Tibetan Plateau
文献类型：期刊论文
| 作者 | Li, Zhaoguo1; Lyu, Shihua2,3; Wen, Lijuan1; Zhao, Lin1; Ao, Yinhuan1; Wang, Shaoying1 |
| 刊名 | ATMOSPHERIC RESEARCH
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 185页码:32-43 |
| 关键词 | Atmospheric boundary layer Heterogeneous surface Sensible heat flux Radiosonde observation Ngoring Lake |
| ISSN号 | 0169-8095 |
| DOI | 10.1016/j.atmosres.2016.10.024 |
| 通讯作者 | Li, Zhaoguo(zgli@lzb.ac.cn) |
| 英文摘要 | High-altitude lakes are frequently exposed to extreme meteorological conditions, but the surface and atmospheric boundary layer (ABL) processes have received little attention under specific weather conditions. This study used the multi-source field data, re-analysis and remote sensing data to investigate the varying patterns and driving forces of the convective boundary layer (CBL) height over Ngoring Lake in the Tibetan Plateau (TP) before and after the cold air incursion. Daily cumulative surface heat flux and buoyancy flux over the land were markedly larger than those over the lake on a clear summer day, but an opposite pattern was observed accompanied by the cold air incursion. CBLS determined by the potential temperature thinned ( depth < 100 m) over the lake in the daytime and thickened (400-600 m) at night on a clear day. Along with the arrival of the cold air, CBL rapidly thickened to 2280 m over the lake, exceeded than the maximum value at adjacent Madoi station. Cold air dramatically cooled the middle-upper atmosphere but the temperature of the lower atmosphere cooled down slowly, partly due to a sharp increase of sensible heat flux over the lake, both of which linked up to weaken the potential temperature gradient. Moreover, increasing wind speed and vertical wind shear further facilitated the buoyancy flux to exert higher heat convection efficiency. All of these factors acted together to cause the rapid growth of CBL over the lake. This investigation provided a more in-depth knowledge of boundary layer dynamics in the lake rich region of the TP. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | LAND-SURFACE ; TIME SCALES ; EVOLUTION ; DYNAMICS ; CHINA ; FLUX ; VARIABILITY ; CIRCULATION ; HEIGHT ; DEPTH |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000390737800004 |
| 出版者 | ELSEVIER SCIENCE INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557490 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Zhaoguo |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China 2.Chengdu Univ Informat Technol, Sch Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhaoguo,Lyu, Shihua,Wen, Lijuan,et al. Effect of a cold, dry air incursion on atmospheric boundary layer processes over a high-altitude lake in the Tibetan Plateau[J]. ATMOSPHERIC RESEARCH,2017,185:32-43. |
| APA | Li, Zhaoguo,Lyu, Shihua,Wen, Lijuan,Zhao, Lin,Ao, Yinhuan,&Wang, Shaoying.(2017).Effect of a cold, dry air incursion on atmospheric boundary layer processes over a high-altitude lake in the Tibetan Plateau.ATMOSPHERIC RESEARCH,185,32-43. |
| MLA | Li, Zhaoguo,et al."Effect of a cold, dry air incursion on atmospheric boundary layer processes over a high-altitude lake in the Tibetan Plateau".ATMOSPHERIC RESEARCH 185(2017):32-43. |
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来源：寒区旱区环境与工程研究所
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