Quantifying daily NOx and CO2 emissions from Wuhan using satellite observations from TROPOMI and OCO-2

Zhang, Qianqian; Boersma, K. Folkert; Zhao, Bin; Eskes, Henk; Chen, Cuihong; Zheng, Haotian; Zhang, Xingying

doi:https://doi.org/10.5194/acp-23-551-2023

Articles | Volume 23, issue 1

https://doi.org/10.5194/acp-23-551-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-551-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 1

Research article

|

13 Jan 2023

Research article |

| 13 Jan 2023

Quantifying daily NO_x and CO₂ emissions from Wuhan using satellite observations from TROPOMI and OCO-2

Qianqian Zhang, K. Folkert Boersma, Bin Zhao, Henk Eskes, Cuihong Chen, Haotian Zheng, and Xingying Zhang

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Total article views: 3,124 (including HTML, PDF, and XML)

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Views and downloads (calculated since 06 Sep 2022)

Month	HTML	PDF	XML	Total
Sep 2022	270	95	5	370
Oct 2022	65	30	3	98
Nov 2022	76	35	4	115
Dec 2022	25	16	0	41
Jan 2023	304	106	6	416
Feb 2023	192	81	1	274
Mar 2023	154	41	0	195
Apr 2023	129	47	1	177
May 2023	136	34	2	172
Jun 2023	114	22	0	136
Jul 2023	104	33	1	138
Aug 2023	118	27	3	148
Sep 2023	97	38	2	137
Oct 2023	118	34	3	155
Nov 2023	88	17	0	105
Dec 2023	67	23	1	91
Jan 2024	59	31	1	91
Feb 2024	57	32	0	89
Mar 2024	65	41	4	110
Apr 2024	48	16	2	66

Cumulative views and downloads (calculated since 06 Sep 2022)

Month	HTML	PDF	XML	Total
Sep 2022	270	95	5	370
Oct 2022	65	30	3	98
Nov 2022	76	35	4	115
Dec 2022	25	16	0	41
Jan 2023	304	106	6	416
Feb 2023	192	81	1	274
Mar 2023	154	41	0	195
Apr 2023	129	47	1	177
May 2023	136	34	2	172
Jun 2023	114	22	0	136
Jul 2023	104	33	1	138
Aug 2023	118	27	3	148
Sep 2023	97	38	2	137
Oct 2023	118	34	3	155
Nov 2023	88	17	0	105
Dec 2023	67	23	1	91
Jan 2024	59	31	1	91
Feb 2024	57	32	0	89
Mar 2024	65	41	4	110
Apr 2024	48	16	2	66

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Total article views: 3,124 (including HTML, PDF, and XML) Thereof 3,140 with geography defined and -16 with unknown origin.

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Short summary

We developed an improved superposition column model and used the latest released (v2.3.1) TROPOMI satellite NO₂ observations to estimate daily city-scale NO_x and CO₂ emissions. The results are verified against bottom-up emissions and OCO-2 XCO₂ observations. We obtained the day-to-day variation of city NO_x and CO₂ emissions, allowing policymakers to gain real-time information on spatial–temporal emission patterns and the effectiveness of carbon and nitrogen regulation in urban environments.