GOSAT卫星温室气体浓度反演误差的分析与评价  

Evaluation of Retrieval Errors of Greenhouse Gas Concentrations from GOSAT

作　　者：茹菲[1,2] 雷莉萍[1] 侯姗姗[1,2] 曾招城[1,2] 关贤华[1,2] 

机构地区：[1]中国科学院对地观测与数字地球科学中心,北京100094 [2]中国科学院大学,北京100049

出　　处：《遥感信息》2013年第1期65-70,共6页Remote Sensing Information

基　　金：中国科学院战略性先导科技专项(XDA05040401);973计划(2009CB723905);国家自然科学基金(41071234)

摘　　要：GOSAT(Greenhouse gases Observation SATellite)卫星是日本于2009年1月23日发射的世界上第一颗专门用于温室气体观测的卫星。本文在分析GOSAT温室气体浓度反演算法误差特征的基础上,评价了GOS-AT卫星大气CO2浓度反演误差的时空变化规律,并进一步针对影响反演算法精度主要因子之一的地表反照率,讨论分析了地表反照率与误差之间的关系。结果表明:反演总体误差空间上南半球低于北半球,在纬度带上显示了一定的季节变化特征;中国区域的误差比同纬度区域高1ppm以上,且具有冬高夏低的季节变化。GOSAT（Greenhouse gases Observation SATellite） is the first satellite in the world specially for observing greenhouse gases,which was launched on January 23,2009.We took an analysis of the error characteristics of CO2 concentrations retrieved from GOSAT observation data,and evaluated their spatial and temporal variations for the whole earth and Chinese land area.The errors,moreover,were took account with the surface albedo which is one of the main factors affecting the accuracy of the inversion algorithm.The results showed that the overall error in the southern hemisphere was lower than that in the northern hemisphere spatially.And the errors showed the seasonal variation along the latitude.It was found that the error over the Chinese land area is 1ppm greater than that in the same latitude region,and the value is higher in the winter than that in the summer.

关 键 词：CO2浓度 GOSAT 反演误差 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]