摘要
土壤湿度是陆面过程的重要参量,可以通过影响土壤本身的热力性质和水文过程,导致局部大气环流的改变以及区域性短期气候异常。青藏高原作为全球气候变化的敏感区,其地气间的水分与能量交换对亚洲季风和全球大气循环有着极大的影响,且高原地区的土壤水分数据能够为陆-气相互作用和数值模拟等研究提供重要的观测信息和初始输入数据。文中综述了青藏高原土壤湿度观测和研究对气候变化影响的重要性,高原土壤湿度观测站网建设现状,各种土壤湿度替代资料的适用性和评估研究,以及高原土壤湿度时空分布特征对降水的影响与气候变化响应,并提出了今后青藏高原土壤湿度研究着重解决的问题。
Soil moisture is a key state variable of the land surface process controlling its thermal properties and hydrological processes,resulting in the variation of local atmospheric circulation and regional short-term climate anomalies.Tibetan Plateau,as the quite sensitive region of global climate change,plays a significant role on the Asian monsoon and global atmospheric cycle with water and energy exchange between land surface and atmosphere.Soil moisture data over the Plateau could provide crucial observation information and initial input data in the study of land-atmosphere interactions and numerical simulation and so forth.This paper presented the importance of soil moisture observation and studies to climate change over the Tibetan Plateau,reviewed the construction status of soil moisture network,the study of applicability and assessment with various substitution data,the spatio-temporal features of soil moisture along with its effect on precipitation and its response to climate change.The important problems that should be solved in the study of soil moisture over the Tibetan Plateau are put forward.
作者
卓嘎
巴桑曲珍
杜军
ZHUO Ga;BASANG Quzhen;DU Jun(Lhasa Branch of Chengdu Institute of Plateau Meteorology,China Meteorological Administration,Lhasa 850001.China;Tibet Instiute of Plateau Amospheric and Enrironmental Sciences,Lhasa 850001,China;Tibet Key Laboratory of Plateau Atmospheric and Ervironmental Sciences,Lhasa 850001,China;Heavy Rain and Drought-Floods Disasters in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072,China;Qamdo Meteorological Bureau,Qamdo 854000,China)
出处
《高原山地气象研究》
2020年第2期89-96,共8页
Plateau and Mountain Meteorology Research
基金
国家自然科学基金项目(41765012)
高原与盆地暴雨旱涝灾害四川省重点实验室开放基金项目(SZKT201907)
2019年西藏自治区科技重点研发计划“西藏主要地表特征科学考察及研究”(无编号)。
关键词
青藏高原
土壤湿度
时空特征
影响
Tibetan Plateau
soil moisture
the spatio-temporal features
influence
