"Deriving regional and point source nitrogen oxides emissions in China from TROPOMI using the directional derivative approach with nonlinear chemical lifetime fitting" - Interactive discussion https://essd.copernicus.org/preprints/essd-2025-480/ 2026-03-09T23:42:38+01:00 Copernicus Publicationshttps://essd.copernicus.org/preprints/essd-2025-480/essd-2025-480-AC2.pdfAC2: 'Reply on RC2', Ling Chen, 09 Mar 2026AC2: 'Reply on RC2', Ling Chen, 09 Mar 2026Ling Chen2026-03-09T23:42:37+01:002026-03-09T23:42:37+01:00https://essd.copernicus.org/preprints/essd-2025-480/essd-2025-480-AC1.pdfAC1: 'Reply on RC1', Ling Chen, 09 Mar 2026AC1: 'Reply on RC1', Ling Chen, 09 Mar 2026Ling Chen2026-03-09T23:41:02+01:002026-03-09T23:41:02+01:00https://essd.copernicus.org/preprints/essd-2025-480/essd-2025-480-RC2.pdfRC2: 'Comment on essd-2025-480', Anonymous Referee #2, 09 Feb 2026RC2: 'Comment on essd-2025-480', Anonymous Referee #2, 09 Feb 2026Anonymous Referee #22026-02-09T05:33:32+01:002026-02-09T05:33:32+01:00https://essd.copernicus.org/preprints/essd-2025-480/essd-2025-480-RC1.pdfRC1: 'Comment on essd-2025-480', Anonymous Referee #1, 22 Dec 2025RC1: 'Comment on essd-2025-480', Anonymous Referee #1, 22 Dec 2025Anonymous Referee #12025-12-22T14:04:32+01:002025-12-22T14:04:32+01:00