Spatially Complete Monthly XCH4 Mapping over China from 2019 to 2024: A Multi-Model Analysis Using Machine Learning
Satellite retrievals of the dry-air column-averaged mole fraction of methane (XCH4) contain substantial spatial gaps, limiting monthly comparisons over a fixed domain. We developed CatBoost (CATB), random forest (RF), and multilayer perceptron (MLP) models to reconstruct spatially complete monthly XCH4 fields over Chin...