Interpretation of the Report on Temporal Dynamics and Spatial Distribution of Global Carbon Source and Sink

The thematic report on "Temporal and Spatial Distribution of Global Carbon Sources and Sinks" is an important part of "Annual Report on Remote Sensing Monitoring of Global Ecological Environment" in 2018. The thematic report gives full play to the technological advantages of TanSat, the first global scientific experimental satellite for monitoring atmospheric carbon dioxide in China, monitors and analyses the temporal and spatial distribution pattern of global atmospheric carbon dioxide from 2010 to 2017 combining with multi-source remote sensing data, generates the first TanSat global chlorophyll fluorescence product in 2017, analyses the temporal and spatial distribution of carbon sources and sinks in the world and key regions, discusses the driving mechanism of global carbon source and sink change, and provides effective scientific data for realizing national emission reduction targets and coping with climate change. The report pointed out that TanSat can accurately retrieve the atmosphericCO2 column concentration and monitor the atmospheric CO2 concentration distribution. TanSat is an important part of the global multi-satellite carbon concentration observation platform and contributes to the construction of the GEO carbon concentration observation system. However, the global carbon concentration remote sensing observation is difficult to achieve all-weather, All-perspective and all-round real-time monitoring of carbon emissions and terrestrial carbon sources and sinks. The construction of global carbon concentration satellite monitoring network still needs the joint efforts of all countries to improve.