临近空间大气温度和密度特性分析  

Analysis of Characteristics of Temperature and Density in Near Space

作　　者：韩丁[1] 盛夏[1] 尹珊建 孙永刚[1] 

机构地区：[1]中国人民解放军96658部队

出　　处：《遥感信息》2017年第3期17-24,共8页Remote Sensing Information

基　　金：国家自然科学基金(41575028;41375029)

摘　　要：为有效分析临近空间大气环境参数的变化特性,利用10年左右的TIMED和ENVISAT卫星探测数据,统计得到了不同高度处大气温度和密度的空间分布特征,并通过与美国标准大气模式USSA-1976对比,分析了大气参数误差随高度、纬度和经度的季节变化,可为临近空间环境特性分析和卫星数据应用提供参考。研究表明,大气温度沿经向在中低纬地区均匀分布,沿纬向在不同高度处的变化特征各异,而大气密度沿经向在低纬地区均匀分布,沿纬向单调减小。USSA-1976模式温度数据整体偏大,随高度上升可信度逐渐降低,而密度数据整体偏小,随高度降低误差逐渐增大。To effectively analyze the changing characteristics of atmospheric parameters in near space,based on about 10-year satellite data from TIMED and ENVISAT,the spatial distribution features of atmospheric temperature and density are statistically calculated,and by compared with USA Standard Atmosphere USSA-1976,the seasonal variation regulations of atmospheric parameter deviation along the altitude,latitude and longitude are analyzed,which can supply some references for the analysis of environmental characteristics and the application of satellite data in near space.The results are as follows：temperature has uniform distribution at mid-latitude and low-latitude areas along the longitude,and the characteristics are different at each altitude along the latitude.Density has uniform distribution at low-latitude areas along the longitude and it decreases monotonically along the latitude.Temperature from USSA-1976 model is larger than that from satellite data and the confidence gradually decreases as altitude increases,while density from USSA-1976 model is smaller than that from satellite data and the error gradually increases as altitude decreases.

关 键 词：临近空间 TIMED ENVISAT USSA-1976 温度 密度 

分 类 号：P351[天文地球—空间物理学]