摘要
综合分析了国际上卫星遥感观测大气二氧化碳(CO2)含量的主要技术与方法,讨论了现有星载大气CO2探测器(传感器)的主要理论基础、反演方法,归纳了仪器的主要性能指标、观测方式和观测目标,分析了影响CO2遥感精度的主要因素。具体研究下列3类星载CO2探测器:①技术相对成熟的、观测要素既包含CO2也包含其他微量气体的综合性星载被动探测仪器,例如大气红外垂直探测仪(AIRS)、大气制图扫描成像吸收光谱仪(SCIAMACHY)、超高光谱红外大气探测干涉仪(IASI);②针对大气中CO2混合比或者对流层下层CO2含量进行专门观测的星载被动探测器:极轨碳观测卫星(Orbiting Carbon Observatory,OCO)和温室气体观测卫星(Greenhouse gas Observing Satellite,GOSAT)搭载的被动红外探测器;③ASCENDS和A-SCOPE等国际卫星计划正在研制中的星载主动激光雷达探测器。进一步介绍了我国在高光谱仪器研制方面具备的研究基础。最后初步分析了星载CO2探测结果的验证、资料同化方法和未来的发展趋势。
This paper summarize recent progresses in the technologies and methods of satellite-based instruments for atmospheric CO2 remote sensing,discuss the basic theory and retrieval method,and analyze the factors debasing the precision of CO2 measurement.Three kinds of instruments are discussed in detail：① Currently operating satellite instruments,which observe atmospheric CO2 and other components,such as Atmospheric Infrared Sounder（AIRS）,Scanning Imaging Absorption Spectrometer（SCIAMACHY） and Infrared Atmospheric Sounding Interferometer（IASI）;② Specific instruments for detecting CO2 content in the lower troposphere,such as Orbiting Carbon Observatory（OCO） and Greenhouse gas Observing Satellite（GOSAT）;③ Satellite projects focus on active instrument-laser lidar,such as Active Sensing of CO2 Emissions over Nights,Days,and Seasons（ASCENDS） and Advanced Space Carbon and Climate Observation of Planet Earth（A-SCOPE）.In addition,we introduce technical basic in hyper spectral instrument in China.Validation,data assimilation and potential development of CO2 satellite remote sensing are discussed at the end of paper.
出处
《遥感技术与应用》
CSCD
北大核心
2011年第2期247-254,共8页
Remote Sensing Technology and Application
基金
国家自然科学基金项目(41075014)
中国科学院战略性先导科技专项(XDA05040000)
