Articles | Volume 23, issue 14
Research article
18 Jul 2023
Research article |  | 18 Jul 2023

Remotely sensed and surface measurement- derived mass-conserving inversion of daily NOx emissions and inferred combustion technologies in energy-rich northern China

Xiaolu Li, Jason Blake Cohen, Kai Qin, Hong Geng, Xiaohui Wu, Liling Wu, Chengli Yang, Rui Zhang, and Liqin Zhang

Data sets

Data for "Remotely Sensed and Surface Measurement Derived Mass-Conserving Inversion of Daily High-Resolution NOx Emissions and Inferred Combustion Technologies in Energy Rich Northern China" Xiaolu Li, Jason Blake Cohen, and Kai Qin

ERA5 hourly data on pressure levels from 1940 to present ECMWF

Changes in China’s anthropogenic emissions during the COVID-19 pandemic B. Zheng, Q. Zhang, G. Geng, Q. Shi, Y. Lei, and K. He

Sentinel-5P TROPOMI Tropospheric NO2 1-Orbit L2 5.5 km x 3.5 km (S5P_L2_NO2_HiR) GES DISC NO2

Short summary
Remotely sensed NO2 and surface NOx are combined with a mathematical method to estimate daily NOx emissions. The results identify new sources and improve existing estimates. The estimation is driven by three flexible factors: thermodynamics of combustion, chemical loss, and atmospheric transport. The thermodynamic term separates power, iron, and cement from coking, boilers, and aluminum. This work finds three causes for the extremes: emissions, UV radiation, and transport.
Final-revised paper