@Article{essd-2025-480,
AUTHOR = {Chen, L. and Cai, Z. and Sun, K. and Liu, Y. and Yang, D. and Li, M. and Zhu, L.},
TITLE = {Deriving regional and point source nitrogen oxides emissions in China from TROPOMI using the directional derivative approach with nonlinear chemical lifetime fitting},
JOURNAL = {Earth System Science Data Discussions},
VOLUME = {2025},
YEAR = {2025},
PAGES = {1--28},
URL = {https://essd.copernicus.org/preprints/essd-2025-480/},
DOI = {10.5194/essd-2025-480}
}