@Article{essd-18-6859-2026,
AUTHOR = {An, C. and Tian, Y. and Li, Z. and Jiang, Q. and Lin, P. and Chang, B. and Xue, J. and Sun, Y.},
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},
VOLUME = {18},
YEAR = {2026},
NUMBER = {9},
PAGES = {6859--6884},
URL = {https://essd.copernicus.org/articles/18/6859/2026/},
DOI = {10.5194/essd-18-6859-2026}
}