“…With a much smaller footprint size than the Greenhouse gases Observing Satellite (GOSAT), OCO‐2 collects about 100 times more samples per day (Crisp et al., 2022), offering greater data density and less spatially mixed atmospheric signals Therefore, OCO‐2 has potential to provide new insights into understanding carbon sources or sinks at regional scales (Philip et al., 2022). Previous studies have utilized OCO‐2 based inversions to investigate regional carbon budgets using either global (Philip et al., 2022) or regional models (Villalobos et al., 2021), and their seasonal cycle and interannual variability (IAV) (Z. Chen, Huntzinger, et al., 2021; Z. Chen, Liu, et al., 2021; Peiro et al., 2022; Villalobos et al., 2022) and extreme climate impacts (Crowell et al., 2019; Kwon et al., 2021) over regions such as Australia, South Asia, and Siberia. However, such research on China is relatively scarce.…”