卫星遥感探测大气CO_2浓度研究最新进展

Latest Progress of the Study of Atmospheric CO_2 Concentration Retrievals from Satellite

大气CO2是一种重要的长寿命温室气体,用卫星遥感探测大气CO2浓度由于可以连续地获得其全球时空分布变化状况,进而提高对大气CO2源汇分布及区域和全球碳循环的认识,因此已经开始成为一个新的遥感研究领域。综合论述了利用卫星平台遥感探测大气CO2浓度分布的研究现状:①简单叙述了现阶段对大气CO2浓度时空分布和变化情况的直接仪器观测结果;②在此基础上比较全面地综述了卫星遥感测量大气CO2浓度的主要方法及获得的结果,包括利用近红外反射太阳光谱或地气热红外发射辐射光谱及两者的组合进行的模拟和卫星实测反演研究;③最后简单地进行了总结并对未来研究提出了展望。

Atmospheric carbon dioxide is an important and long-lived greenhouse gas. Satellite measurements of the distribution of the global atmospheric CO2 would get its continuous change. Improved quantitative understanding of the distribution and variability of the sources and sinks of CO2 and the global carbon cycle would be done, furthermore, the research and prediction on the global climate change would be enhanced. The remote sensing of the atmospheric CO2 from instrumentation aboard satellite has been a new area of research. The research on the remote measurement of the distribution of the atmospheric CO2 from satellite is summarily commented. Firstly, the temporal and spatial distribution and variability of atmospheric CO2 concentration monitored by direct instrument observations is presented, then the main methods and results of satellite remote sensing measurements of atmospheric CO2 concentration are reviewed, including the measurements of the near infrared reflected sunlight or the thermal infrared emission spectroscopy and the combination of both measurement, finally the summary and prospects are discussed briefly.