黄土高原半干旱雨养农田空气动力和热力参数分析  

Analysis on Aerodynamic and Thermodynamic Parameters in the Semi-arid Rain Fed Field of Loess Plateau

作　　者：陈乾[1] 李宝梓[1] 陈添宇[2] 

机构地区：[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

出　　处：《干旱气象》2014年第4期547-552,共6页Journal of Arid Meteorology

基　　金：甘肃省自然基金"用卫星资料反演蒸散"(ZR-94-073)资助

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。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.

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 

分 类 号：P433[天文地球—大气科学及气象学]