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Interannual Variability of Atmospheric Heat Source/Sink over the Qinghai-Xizang (Tibetan) Plateau and its Relation to Circulation


doi: 10.1007/s00376-001-0007-3

  • Based on the 1961-1995 atmospheric apparent heat source/sink and the 1961-1990 snow-cover days and depth over the Qinghai-Xizang Plateau (QXP) and the 1961-1995 reanalysis data of NCEP/NCAR and the 1975-1994 OLR data, this paper discusses the interannual variability of the heat regime and its relation to atmospheric circulation. It is shown that the interannual variability is pronounced, with maximal variability in spring and autumn, and the variability is heterogeneous horizontally. In the years with the weak (or strong) winter cold source, the deep trough over East Asia is to the east (or west) of its normal, which corresponds to strong (or weak) winter monsoon in East Asia. In the years with the strong (or weak) summer heat source, there exists an anomalous cyclone (or anticyclone) in the middle and lower troposphere over the QXP and its neighborhood and anomalous southwest (or northeast) winds over the Yangtze River valley of China, corresponding to strong (or weak) summer monsoon in East Asia. The summer heat source of the QXP is related to the intensity and position of the South Asia high. The QXP snow cover condition of April has a close relation to the heating intensity of summer. There is a remarkable negative correlation between the summer heat source of the QXP and the convection over the southeastern QXP, the Bay of Bengal, the Indo-China Peninsula, the southeastern Asia, the southwest part of China and the lower reaches of the Yangtze River and in the area from the Yellow Sea of China to the Sea of Japan.
  • [1] LIU Ge, WU Renguang, ZHANG Yuanzhi, and NAN Sulan, 2014: The Summer Snow Cover Anomaly over the Tibetan Plateau and Its Association with Simultaneous Precipitation over the Mei-yu-Baiu region, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 755-764.  doi: 10.1007/s00376-013-3183-z
    [2] WEI Na, GONG Yuanfa, HE Jinhai, 2009: Structural Variation of Atmospheric Heat Source over the Qinghai-Xizang Plateau and its Influence on Precipitation in Northwest China the Qinghai-Xizang Plateau and Its Influence on Precipitation in Northwest China, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 1027-1041.  doi: 10.1007/s00376-009-7207-7
    [3] Li Guo ping, Lu Jinghua, Jin Bingling, Bu Nima, 2001: The Effects of Anomalous Snow Cover of the Tibetan Plateau on the Surface Heating, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 1207-1214.  doi: 10.1007/s00376-001-0034-0
    [4] LIU Huaqiang, SUN Zhaobo, WANG Ju, MIN Jinzhong, 2004: A Modeling Study of the Effects of Anomalous Snow Cover over the Tibetan Plateau upon the South Asian Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 964-975.  doi: 10.1007/BF02915598
    [5] Fangchi LIU, Xiaojing JIA, Wei DONG, 2024: Changes in Spring Snow Cover over the Eastern and Western Tibetan Plateau and Their Associated Mechanism, ADVANCES IN ATMOSPHERIC SCIENCES, 41, 959-973.  doi: 10.1007/s00376-023-3111-9
    [6] Zhu Qiangen, Hu Jianglin, 1995: Effects on Asian Monsoon of Gigantic Qinghai-Xizang Plateau and Western Pacific Warm Pool, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 351-360.  doi: 10.1007/BF02656984
    [7] Haoxin ZHANG, Naiming YUAN, Zhuguo MA, Yu HUANG, 2021: Understanding the Soil Temperature Variability at Different Depths: Effects of Surface Air Temperature, Snow Cover, and the Soil Memory, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 493-503.  doi: 10.1007/s00376-020-0074-y
    [8] Qian YANG, Shichang KANG, Haipeng YU, Yaoxian YANG, 2023: Impact of the Shrinkage of Arctic Sea Ice on Eurasian Snow Cover Changes in 1979–2021, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 2183-2194.  doi: 10.1007/s00376-023-2272-x
    [9] XUN Xueyi, HU Zeyong, MA Yaoming, 2012: The Dynamic Plateau Monsoon Index and Its Association with General Circulation Anomalies, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 1249-1263.  doi: 10.1007/s00376-012-1125-9
    [10] Yulan ZHANG, Shichang KANG, Tanguang GAO, Michael SPRENGER, Wei ZHANG, Zhaoqing WANG, 2023: Black Carbon Size in Snow of Chinese Altai Mountain in Central Asia, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 1199-1211.  doi: 10.1007/s00376-022-2141-z
    [11] Jiang Shangcheng, Ye Qian, Yang Xifeng, An Gang, Xiangqiang Wu, 2000: Climatological Features of the Global Tropical Subsidence Region Based on Satellite Observations, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 391-402.  doi: 10.1007/s00376-000-0031-8
    [12] Zhang Suping, Jiang Shangcheng, 2001: Possible Influences of ITCZ in Asian Monsoon Regions on Rainy Season Anomaly of North China, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 1018-1028.
    [13] Chen Lieting, Wu Renguang, 2000: Interannual and Decadal Variations of Snow Cover over Qinghai-Xizang Plateau and Their Relationships to Summer Monsoon Rainfall in China, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 18-30.  doi: 10.1007/s00376-000-0040-7
    [14] Shui YU, Jianqi SUN, 2024: Persistent Variations in the East Asian Trough from March to April and the Possible Mechanism, ADVANCES IN ATMOSPHERIC SCIENCES, 41, 737-753.  doi: 10.1007/s00376-023-3024-7
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    [16] Xuke LIU, Xiaojing JIA, Min WANG, Qifeng QIAN, 2022: The Impact of Tibetan Plateau Snow Cover on the Summer Temperature in Central Asia, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 1103-1114.  doi: 10.1007/s00376-021-1011-4
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    [20] ZHU Guofu, CHEN Shoujun, 2003: A Numerical Case Study on a Mesoscale Convective System over the Qinghai-Xizang (Tibetan) Plateau, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 385-397.  doi: 10.1007/BF02690797

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Manuscript History

Manuscript received: 10 January 2001
Manuscript revised: 10 January 2001
通讯作者: 陈斌, bchen63@163.com
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Interannual Variability of Atmospheric Heat Source/Sink over the Qinghai-Xizang (Tibetan) Plateau and its Relation to Circulation

  • 1. Department of Geophysics, Peking University, Beijing 100871,Chinese Academy of Meteorological Sciences, Beijing 100081

Abstract: Based on the 1961-1995 atmospheric apparent heat source/sink and the 1961-1990 snow-cover days and depth over the Qinghai-Xizang Plateau (QXP) and the 1961-1995 reanalysis data of NCEP/NCAR and the 1975-1994 OLR data, this paper discusses the interannual variability of the heat regime and its relation to atmospheric circulation. It is shown that the interannual variability is pronounced, with maximal variability in spring and autumn, and the variability is heterogeneous horizontally. In the years with the weak (or strong) winter cold source, the deep trough over East Asia is to the east (or west) of its normal, which corresponds to strong (or weak) winter monsoon in East Asia. In the years with the strong (or weak) summer heat source, there exists an anomalous cyclone (or anticyclone) in the middle and lower troposphere over the QXP and its neighborhood and anomalous southwest (or northeast) winds over the Yangtze River valley of China, corresponding to strong (or weak) summer monsoon in East Asia. The summer heat source of the QXP is related to the intensity and position of the South Asia high. The QXP snow cover condition of April has a close relation to the heating intensity of summer. There is a remarkable negative correlation between the summer heat source of the QXP and the convection over the southeastern QXP, the Bay of Bengal, the Indo-China Peninsula, the southeastern Asia, the southwest part of China and the lower reaches of the Yangtze River and in the area from the Yellow Sea of China to the Sea of Japan.

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