科尔沁沙地流动沙丘与玉米地辐射特性比较分析  

CHARACTERISTICS OF RADIATION BALANCE OVER MOVING DUNE AND FIELD AREA IN KEERQIN DESERT REGION OF CHINA

作　　者：王凯[1] 张宏升[1] 刘辉志[2] 杜金林[1] 胡非[2] 陈家宜[1] 

机构地区：[1]北京大学物理学院大气科学系,暴雨与旱涝灾害教育部重点实验室,北京100871 [2]中国科学院大气物理研究所大气边界层和大气化学国家重点实验室,北京100029

出　　处：《应用气象学报》2005年第2期174-180,共7页Journal of Applied Meteorological Science

基　　金：国家自然科学基金委员会(40175005);国家重点基础研究项目资助(G1999043400)。

摘　　要：利用2001年夏季内蒙古科尔沁沙地地区大气边界层实验观测资料,对比分析了流动沙丘和临近流动沙丘的玉米地两种典型下垫面的辐射通量特征。结果表明流动沙丘和玉米地地区的总辐射与大气逆辐射相近,差异不足2%。净辐射、地表反照率、有效辐射存在较大差异,流动沙丘的净辐射明显小于玉米地,其中反照率差异的贡献约为60%,长波辐射差异的贡献约为40%。流动沙丘的反照率、有效辐射明显大于玉米地,反照率高出中国西北HEIFE实验沙漠地区约10%,有效辐射则小于沙漠地区。The characteristics of the surface radiation components are analyzed by using the measurement data obtained over the moving dune and the field area in the Keerqin desert region of Nei Mongol, China in the summer of 2001. The results show that the characteristics of the radiation, such as global solar radiation and long-wave radiation, over the moving dune area are similar to those over the field area. The value of net radiation over the moving dune area is obviously lower than that over the field area. Meanwhile, the value of albedo and the effective radiation over the moving dune are higher than those over the field respectively. The value of albedo over the moving dune exceeds that of the Desert station in HEIFE by 10%, and the effective radiation is lower than that of the Desert station.

关 键 词：流动沙丘 科尔沁沙地 玉米地 比较分析 辐射特性 有效辐射 沙漠地区 大气边界层 2001年 大气逆辐射 地表反照率 观测资料 辐射通量 对比分析 长波辐射 中国西北 净辐射 内蒙古 下垫面 总辐射 实验 

分 类 号：P422[天文地球—大气科学及气象学]