Fig. 1. Flowchart of atmospheric CO₂ retrieval

Fig. 2. Global grid of monthly mean plant chlorophyll fluorescence of January 2019 (a) and July 2019 (b)

Fig. 3. Seasonal variation of plant chlorophyll fluorescence of typical grassland

Fig. 4. The surface type around Park Fall station

Fig. 5. XCO₂ retrieval results of GOSAT observations near Park Fall station
Blue circle and green diamond represents uncorrected retrieval results and corrected retrieval results separately, red * star represents TCCON measurements