卫星遥感大气CO 2 的技术与方法进展综述
摘要
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.