塔克拉玛干沙漠北缘绿洲-荒漠过渡带辐射特征——以肖塘为例  

Radiation characteristics of the oasis-desert transition zone in the northern margin of the Taklimakan Desert:a case study of Xiaotang

作　　者：周洒洒 何清[2] 金莉莉[2] 张建涛[2] Zhou Sasa;He Qing;Jin Lili;Zhang Jiantao(College of Geography Sciences and Tourism,Xinjiang Normal University,Urumqi 830054,China;Taklimakan Desert Meteorology Field Experiment Station of CMA,Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China)

机构地区：[1]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [2]中国气象局乌鲁木齐沙漠气象研究所,中国气象局塔克拉玛干沙漠气象野外科学实验基地,新疆乌鲁木齐830002

出　　处：《中国沙漠》2020年第4期43-51,共9页Journal of Desert Research

基　　金：国家自然科学基金项目(41830968,41605008);国家公益性行业(气象)科研专项(GYHY(QX)201506001);新疆高层次人才引进项目(2016-金莉莉)。

摘　　要：利用塔克拉玛干沙漠北缘绿洲-荒漠过渡带肖塘地区2018年直接观测辐射资料,对该地区的直接辐射、散射辐射和总辐射进行分析。结果表明:散射辐射和总辐射年曝辐量分别为3 323.8、5 781.8 MJ·m^-2;散射辐射月曝辐量最大在5月,最小在12月;总辐射月曝辐量最大在7月,最小在12月。直接辐射夏季>秋季>春季>冬季;散射辐射春季>夏季>秋季>冬季;总辐射夏季>春季>秋季>冬季。晴天日变化表现为早晚小,中午大;沙尘暴天散射辐射值增加到与总辐射基本一致,直接辐射衰减最为明显。肖塘地区夏季太阳高度角74°,冬季太阳高度角42°。地面有积雪时,相比较于晴天散射辐射增加47.5%。In this paper,The direct radiation,diffuse radiation and total radiation in the north margin of Taklimakan desert were analyzed based on the radiation data observed directly in the oase-desert transition zone of Xiaotang area in 2018. The results show that the diffuse radiation and the total annual radiation exposure were3 323. 8 and 5 781. 8 MJ·m^-2,respectively. The maximum radiation exposure was in May and the minimum was in December. The total monthly radiation exposure was the largest in July and the smallest in December. Direct radiation:summer > autumn>spring>winter;Diffuse radiation:spring>summer>autumn>winter;Total radiation:summer>spring>autumn>winter. The daily variation of sunny days was small in the morning and evening,and large at noon. In sandstorm days,the value of diffuse radiation increased to be consistent with the total radiation,and the direct radiation attenuation was the most obvious. In Xiaotang area,the solar altitude Angle was74° in summer and 42° in winter. When there was snow on the ground,the diffuse radiation increases by 47. 5%compared with that in sunny days.

关 键 词：绿洲-荒漠过渡带 塔克拉玛干沙漠 直接辐射 散射辐射 总辐射 

分 类 号：P422[天文地球—大气科学及气象学]