@Article{essd-2025-817,
AUTHOR = {Li, Z. and Tian, Y. and Lin, P. and Chang, B. and Xue, J.},
TITLE = {Signal-Domain Guided Deep Learning for Gap-Filling of XCO and XCH$_4$: A Masked Spatio-Temporal Fusion of TROPOMI and GEOS-Chem (2019--2023)},
JOURNAL = {Earth System Science Data Discussions},
VOLUME = {2026},
YEAR = {2026},
PAGES = {1--34},
URL = {https://essd.copernicus.org/preprints/essd-2025-817/},
DOI = {10.5194/essd-2025-817}
}