基于机载平台的NO_2垂直廓线反演灵敏度研究  

The sensitivity study of NO_2 vertical profile retrieval by airborne platform

作　　者：徐晋[1] 谢品华[1] 司福祺[1] 李昂[1] 周海金[1] 吴丰成[1] 王杨[1] 刘建国[1] 刘文清[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所环境光学中心,合肥230031

出　　处：《物理学报》2013年第10期219-226,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:41275038;41275037);环保公益性行业科研专项(批准号:201109007)资助的课题~~

摘　　要：研究了基于机载多角度观测方式反演NO2垂直廓线的灵敏度,利用计算的权重因子和平均核分析了不同波长、不同观测角度、不同地表反照率、不同气溶胶模式、不同高度对廓线反演灵敏度的影响.结果表明,中心波长在370nm的紫外波段的平均核比中心波长在500nm的可见波段垂直分辨率更高,更有利于廓线反演;向上观测角度的测量结果中没有明显的廓线信息,而向下观测角度的测量结果包含更多的廓线信息;地表反照率对廓线反演没有明显影响;高气溶胶模式使得廓线反演的灵敏度升高;较低的飞行高度计算的平均核差异不明显,不利于廓线信息的反演.The retrieval sensitivity of NO2 profile based on airborne muti-axis observation is studied,and the influences of different wavelengths,different view angles,different surface albedos,different aerosol modes,and different altitude are evaluated by calculating the weighting function and average kernels.The results show that higher vertical resolution is obtained at 370 nm than at 500 nm for averaging kernels,more conducive to profile retrieval;not too much profile information is found in upper view angles,while more profile information is achieved in downward looking angles;surface albedos have no obvious influence on profile retrieval;high aerosol mode increases the sensitivity of profile retrieval;the averaging kernels at low flight attitude have no obvious differences in different altitudes,nor are they conducive to the profile retrieval.

关 键 词：多轴差分吸收光谱技术 机载 垂直廓线 灵敏度 

分 类 号：X831[环境科学与工程—环境工程]