红外高光谱资料AIRS反演晴空条件下大气氧化亚氮廓线  

Simulation of Atmospheric Nitrous Oxide Profiles Retrieval from AIRS Observations

作　　者：马鹏飞[1,2,3] 陈良富[1] 厉青[2,3] 陶明辉[1] 王子峰[1] 张莹[1] 王中挺[2,3] 周春艳[2,3] 

机构地区：[1]中国科学院遥感与数字地球研究所,遥感科学国家重点实验室,北京100101 [2]环境保护部卫星环境应用中心,北京100029 [3]国家环境保护卫星遥感重点实验室,北京100101

出　　处：《光谱学与光谱分析》2015年第6期1690-1694,共5页Spectroscopy and Spectral Analysis

基　　金：国家重点基础研究发展计划(973计划)项目(2010CB950801);中国科学院战略性先导科技专项(XDA05040204);高分辨率对地观测系统重大专项(05-Y30B02-9001-13/15)资助

摘　　要：N2O是一种非常重要的温室气体和臭氧损耗物。由于观测资料有限,对于N2O在这两方面所发挥的作用定量描述还存在很多的不确定性。利用热红外卫星数据AIRS可以反演监测甲烷和二氧化碳气体,但对氧化亚氮的反演还很少见到。因此该工作首次在国内针对高光谱红外卫星资料AIRS,开展利用最优估计法反演大气N2O廓线的模拟研究。讨论了先验廓线的获取方法及反演通道的选取方法,并将反演结果和HIPPO飞机观测数据进行比较,发现AIRS观测数据可以很好的捕获N2O的垂直分布,在300-900hPa,与HIPPO数据趋势一致,且反演精度较高,相对误差仅为0.1%,与所选取反演通道的jacobian峰值区间一致。反演结果相比于特征向量统计法也有显著提高。Nitrous Oxide is a very important greenhouse gases and ozone-depleting substances.Due to the limited observations,there are still many uncertainties to quantitativelydescribe therole of nitrous oxide played in both cases.We can retrieve the methane and carbon dioxide gas using thermal infrared satellite data AIRS,but it is rarely for the nitrous oxide retrieval.Therefore,this paper retrieves nitrous oxideprofiles from the AIRS data with anOptimal Estimate Method for the first time in China.The issue of the a priori and channelselection is discussed.Comparison of the retrieved AIRS profiles with HIPPOprofiles show the retrieved profiles are in good agreement with the smoothed HIPPO profiles,and a notable improvementin this algorithmthan the eigenvector regression algorithm.For pressures between 300 and 900hPa,we got the most accurate profiles and the relative erroris only 0.1%,which is consistent with the jacobian peaks of the selected channels.

关 键 词：AIRS 最优估计法 大气N2O廓线 JACOBIAN 

分 类 号：O657.3[理学—分析化学]