| 黄土高原半干旱雨养农田空气动力和热力参数分析 |
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| 引用本文： | 陈乾,;李宝梓,;陈添宇.黄土高原半干旱雨养农田空气动力和热力参数分析[J].甘肃气象,2014(4):547-552. |
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| 作者姓名： | 陈乾 ;李宝梓 ;陈添宇 |
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| 作者单位： | [1]甘肃省人工影响天气办公室,甘肃兰州730020; [2]中国气象局人工影响天气中心,北京100081 |
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| 基金项目： | 甘肃省自然基金“用卫星资料反演蒸散”（ZR-94-073）资助 |
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| 摘 要： | 利用甘肃省定西干旱气象与生态环境试验基地2003年夏季加强观测期间的资料,计算动量粗燥长度、热量粗糙长度和热量输送附加阻抗,结合卫星反演的差值植被指数Indv和表面温度Ts将其推广到中国西北区东部,可用于计算非均匀地表能量通量。
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| 关 键 词： | 黄土高原 半干旱雨养农田 动量粗糙长度 热量粗糙长度 热量输送附加阻抗 |
Analysis on Aerodynamic and Thermodynamic Parameters in the Semi-arid Rain Fed Field of Loess Plateau |
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| Affiliation: | CHEN Qian,LI Baozi,CHEN Tianyu ( 1. Department of Atmospheric Sciences, Yunnan University, Kunming 650000, China; 2. Key Laboratory for Land Sugrace Process and Climate Change in Cold and Arid Regions, Chinese Academy of Sciences, Lanzhou 730000, China; 3. Institute of Arid Meteorology, CMA, Lanzhou 730020, China) |
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| Abstract: | Based on data from the intensified observational period over spring wheat field area at the arid meteorology and ecological en-vironment experimental station in Dingxi of Gansu Province from June to August 2003,which is located in the semi-arid rain fed agri-cultural region of Loess Plateau,the aerodynamic roughness Z0m ,the thermodynamic roughness Z0h and the excess resistance to heat transfer kB-1 were calculated and analyzed,firstly.Then,the spatial distributions of Z0m and kB-1 over eastern part of northwest China were obtained,accompanied by vegetation index Indv and surface temperature Ts derived by satellite,respectively.The above parame-ters can be used to estimate the heterogeneous land surface energy flux. |
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| Keywords: | Loess Plateau semi-arid rain fed field aerodynamic roughness thermodynamic roughness excess resistance to heat transfer |
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