| 夏季青藏高原上空热力异常与其上下游大气环流联系的研究进展 |
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| 引用本文： | 刘舸,赵平,南素兰,陈军明,王慧美.夏季青藏高原上空热力异常与其上下游大气环流联系的研究进展[J].气象学报,2018,76(6):861-869. |
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| 作者姓名： | 刘舸 赵平 南素兰 陈军明 王慧美 |
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| 作者单位： | 1.中国气象科学研究院灾害天气国家重点实验室, 北京, 100081 |
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| 基金项目： | 国家自然科学基金（91437218、41775084和91637312）、第三次青藏高原大气科学试验——边界层与对流层观测（GYHY201406001）、国家重点研发计划（2018YFC1505706）、中国气象科学研究院基本科研业务费（2017Z013）。 |
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| 摘 要： | 围绕夏季青藏高原热力异常与其上、下游大气环流在年际尺度变化上的联系，对最新的研究成果做了简要介绍。通过观测资料分析与数值试验，指出在年际尺度上夏季青藏高原热力异常与同期亚洲-太平洋涛动（APO）具有显著且稳定的联系，前者可能通过调节亚洲和中东太平洋热带外大尺度垂直环流异常影响后者。另外，夏季青藏高原热力异常对高原上空及更大范围上对流层温度的年际变化也有一定贡献，进而通过对上游大尺度环流的调节作用影响到同期西非萨赫勒地区的降水。夏季青藏高原热力异常只是导致其上、下游大气环流年际变化的一个原因，其他影响效应尚需进一步探讨。
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| 关 键 词： | 亚洲-太平洋涛动 青藏高原 数值模拟 萨赫勒 西非季风降水 |
| 收稿时间： | 2018/6/13 0:00:00 |
| 修稿时间： | 2018/9/26 0:00:00 |
Advances in the study of linkage between the Tibetan Plateau thermal anomaly and atmospheric circulations over its upstream and downstream regions |
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| LIU Ge,ZHAO Ping,NAN Sulan,CHEN Junming and WANG Huimei.Advances in the study of linkage between the Tibetan Plateau thermal anomaly and atmospheric circulations over its upstream and downstream regions[J].Acta Meteorologica Sinica,2018,76(6):861-869. |
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| Authors: | LIU Ge ZHAO Ping NAN Sulan CHEN Junming and WANG Huimei |
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| Institution: | 1.State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China2.Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China |
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| Abstract: | With respect to the relationship between thermal anomaly over the Tibetan Plateau (TP) and atmospheric circulation upstream and downstream of the TP on interannual timescale, the present paper briefly summarizes the latest research. Through observational analyses and numerical experiments, it is revealed that on the interannual timescale, the TP thermal anomaly is significantly and steadily correlated with the Asian-Pacific Oscillation (APO) in the summer. This relationship is likely due to the impact of the TP thermal anomaly on the APO via regulating the anomalous vertical circulation cell over the extratropical Asia and eastern-central Pacific. In addition, the TP thermal anomaly in the summer may contribute to interannual variability of tropospheric temperature over the TP and its adjacent area and associated large-scale circulation in the upstream, which subsequently affect precipitation over Sahel in the West African monsoon region. The TP thermal anomaly is only one of the factors that affect interannual variation of the atmospheric circulation upstream and downstream of the TP, and influences of other factors need further investigation in the future. |
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| Keywords: | Asian-Pacific Oscillation (APO) Tibetan Plateau Numerical simulation Sahel West African monsoon precipitation |
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