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青藏高原东南部复杂地形区不同天气状况下陆气能量交换特征分析

李娟 李跃清 蒋兴文 高笃鸣

李娟, 李跃清, 蒋兴文, 高笃鸣. 青藏高原东南部复杂地形区不同天气状况下陆气能量交换特征分析[J]. 大气科学, 2016, 40(4): 777-791. doi: 10.3878/j.issn.1006-9895.1509.15197
引用本文: 李娟, 李跃清, 蒋兴文, 高笃鸣. 青藏高原东南部复杂地形区不同天气状况下陆气能量交换特征分析[J]. 大气科学, 2016, 40(4): 777-791. doi: 10.3878/j.issn.1006-9895.1509.15197
LI Juan, LI Yueqing, JIANG Xingwen, GAO Duming. Characteristics of Land-Atmosphere Energy Exchanges over Complex Terrain Area of Southeastern Tibetan Plateau under Different Synoptic Conditions[J]. Chinese Journal of Atmospheric Sciences, 2016, 40(4): 777-791. doi: 10.3878/j.issn.1006-9895.1509.15197
Citation: LI Juan, LI Yueqing, JIANG Xingwen, GAO Duming. Characteristics of Land-Atmosphere Energy Exchanges over Complex Terrain Area of Southeastern Tibetan Plateau under Different Synoptic Conditions[J]. Chinese Journal of Atmospheric Sciences, 2016, 40(4): 777-791. doi: 10.3878/j.issn.1006-9895.1509.15197

青藏高原东南部复杂地形区不同天气状况下陆气能量交换特征分析

doi: 10.3878/j.issn.1006-9895.1509.15197
基金项目: 国家自然科学基金项目91337215、91337107,公益性行业(气象)科研专项GYHY201406001、GYHY201206041、GYHY201006053,四川省气象局高原气象观测与应用创新团队

Characteristics of Land-Atmosphere Energy Exchanges over Complex Terrain Area of Southeastern Tibetan Plateau under Different Synoptic Conditions

  • 摘要: 青藏高原地理环境复杂,已有大气陆面-边界层研究工作多集中于不同下垫面,很少有对复杂地形区的研究。本文利用青藏高原东南部林芝地区2013年5月20日至7月9日四个野外试验站点的观测资料,分析了不同天气条件下,高原复杂地形区不同下垫面的陆-气能量交换特征。结果表明:在各站向下短波辐射基本一致的情况下,地形较陡的北坡阔叶林站感热通量远大于其他3个站点;下垫面植被覆盖最多的南面麦田站潜热通量最大。各站能量通量有明显的日变化特征,晴天时,感热通量和净辐射明显大于阴雨天,而潜热通量随天气状况变化不大。青藏高原复杂地形环境比不同天气条件对于感热通量的影响更显著;不同地形阴雨天时对于潜热通量有明显的影响。当南亚季风槽前的西南暖湿气流影响到林芝地区时,该地区以阴雨天为主,反之则以晴天为主。林芝地区地-气通量的月内变化明显受南亚季风活动的影响。
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