The open burning of waste, whether at individual residences, businesses, or dump sites, is a
large source of air pollutants. These emissions, however, are not included in many current …

A 6-year-long high-resolution Chinese air quality reanalysis (CAQRA) dataset is presented
in this study obtained from the assimilation of surface observations from the China National …

The COVID‐19 epidemic has substantially limited human activities and affected
anthropogenic emissions. In this work, daily NOx emissions are inferred using a regional …

Ammonia (NH3) emission inventories are an essential input in chemical transport models
and are helpful for policy-makers to refine mitigation strategies. However, current estimates …

Global coupled chemistry-climate models underestimate carbon monoxide (CO) in the
Northern Hemisphere, exhibiting a pervasive, negative bias against measurements peaking …

The unprecedented lockdown of human activities during the COVID-19 pandemic has
significantly influenced social life in China. However, understanding the impact of this …

An ensemble Kalman filter data assimilation (DA) system has been developed to improve air
quality forecasts using surface measurements of PM 10, PM 2.5, SO 2, NO 2, O 3, and CO …

An observation-based method (OBM) is developed to investigate the sensitivity of ozone
formation to precursors during two persistent elevated ozone episodes observed at 77 …

Understanding the sources of volatile organic compounds (VOCs) is essential for ground-
level ozone and secondary organic aerosol (SOA) abatement measures. We made VOC …

Despite the significant progress in improving chemical transport models (CTMs),
applications of these modeling endeavors are still subject to large and complex model …