南疆沙漠腹地大气边界层气象要素廓线分析  

ANALYSIS OF METEOROLOGICAL ELEMENT PROFILE IN ATMOSPHERE BOUNDARY LAYER IN SOUTH XINJIANG DESERT HINTERLAND

作　　者：缪启龙[1] 王晶[1] 何清[1,2] 温雅婷[1] 李兰兰[1] 

机构地区：[1]南京信息工程大学,江苏南京210044 [2]乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002

出　　处：《气象与减灾研究》2009年第2期6-10,75,76,共7页Meteorology and Disaster Reduction Research

基　　金：国家自然科学基金项目(编号:40775019);江苏省气象灾害重点实验室项目(编号:KLME050103)

摘　　要：利用塔中80m观测塔梯度系统采集的2006年8月、10月和2007年1月、4月的风、温度、湿度资料,结合气象站的同步气象资料,对南疆沙漠腹地近地层四季的晴天平均风速、温度、湿度廓线分布特征进行分析。结果表明,晴天平均风速白天随高度升高增加缓慢,夜间较快,低层风速白天比夜间大,高层则白天比夜间小,春夏季风速较大;四季平均温度廓线表现为夜间辐射型、早上过渡型、白天日射型和傍晚过渡型等四种类型,早、晚过渡时间四季各有不同,日最低、最高温度出现时间四季则相差不大;冬季夜间比湿随高度升高而增大,整个80m近地层表现为逆湿状态,其他季节逆湿一般出现在0.5—1m、1—2m、32—47m、63—80m等4个层次上,各逆湿层出现的时间各季节有所差异。The distribution characteristics of the four seasons＇ average wind speed, temperature, humidity profiles of cloudless day within the surface layer in South of Xinjiang Desert Hinterland are analyzed by using the data of gradient wind speed, temperature, humidity from the Tazhong 80 m observation tower in August and October in 2006 together with those in January and April in 2007, as well as the synchronous conventional meteorological observation data. The result indicate that the average wind speed increases slowly with height at daytime and increases quickly at night; contract to the high-level wind speed, the low-level wind speed is larger at daytime than that at night; the average temperature profiles have four patterns： the night radiation pattern, the early morning transition pattern, the daytime solar radiation pattern and the evening transition pattern; the transition time in the morning and in the evening is variable in different seasons, whereas the appearance time of the minimum and the maximum temperatures in four seasons have little difference; the specific humidity increases with height at winter night, which reveals a humidity inversion structure for the entire 80 m surface layer. And the humidity inversions appear generally in the layers of 0.5-1 m, 1-2 m, 32-47 m, 63-80 m in the other three seasons.

关 键 词：沙漠腹地 近地层 气象要素变化 逆湿 

分 类 号：P404[天文地球—大气科学及气象学]