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Paper Code  
Title   A high-accuracy method for simulating the XCO2 global distribution using GOSAT retrieval data
Authors   ZhaoMingWei;ZhangXingYing;YueTianXiang;WangChun etc.
Corresponding Author  
Year   2017
Title of Journal  
Volume   SCIENCE CHINA-EARTH SCIENCES
Number  
Page  
Abstract   A high-accuracy surface modeling (HASM) method based on the fundamental theorem of surfaces, is developed to simulate XCO2 surfaces using the GOSAT retrieval XCO2 data. Two tests are designed to investigate the simulation accuracy. The first test divides the existing satellite retrieval XCO2 data into training points and testing points, and simulates the XCO2 surface using the training points while computing the simulation error using the testing points. The absolute mean error (MAE) of the testing points is 1.189 ppmv, and the corresponding values of the comparison methods, Ordinary Kriging, IDW, and Spline are 1.203, 1.301, and 1.355 ppmv, respectively. The second test simulates the XCO2 surface using all the satellite retrieval points and uses the TCCON (Total Carbon Column Observing Network) site observation values as the ture values. For the six typical TCCON sites, the HASM simulation MAE is 1.688 ppmv, and the satellite retrieval MAE at the same sites is 2.147 ppmv. These results indicate that HASM can successfully simulate XCO2 surfaces based on satellite retrieval data.
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Classification: SCI
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Title of Journal: SCIENCE CHINA-EARTH SCIENCES
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