Journal article
Impact of CrIS-Derived NH 3 Emission Updates on Simulated Nitrate and Ammonium Aerosols over East Asia
Environmental science & technology
24 Dec 2025
PMID: 41445096
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Fine particulate matter (PM
diameter <1 μm) strongly affects air quality and health, with sulfate, nitrate, and ammonium (SNA) as major components across East Asia. Because NH
is a key precursor of SNA formation, accurate NH
emission data are essential for reliable SNA simulations. This study improves NH
emission inventories in East Asia by integrating the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) and the Cross-Track Infrared Sounder (CrIS), with extensive evaluation against ground-based and aircraft observations from the Korea-United States Air Quality (KORUS-AQ) campaign. Iterative linear inversion of NH
emissions using WRF-Chem markedly enhances simulations of nitrate and ammonium, in agreement with both the aircraft and surface measurements. The absolute biases of nitrate and ammonium were reduced from 89.7 and 50.1% to 13.6 and 0.6%, respectively, compared to the aircraft observations over Seoul. However, uncertainties in nocturnal NH
emissions remain potential sources of nighttime biases in nitrate and ammonium. Overall, the results indicate that nitrate aerosol in most of East Asia is sensitive to NH
emission changes. To advance our understanding of SNA formation and support effective aerosol mitigation policies, improved characterization of the diurnal cycle of NH
emissions through ground-based monitoring and high-resolution geostationary satellite observations is urgently needed.
Metrics
4 Record Views
Details
- Title
- Impact of CrIS-Derived NH 3 Emission Updates on Simulated Nitrate and Ammonium Aerosols over East Asia
- Creators
- Kyoung-Min Kim - Yonsei UniversitySi-Wan Kim - Yonsei UniversitySeunghwan Seo - Yonsei UniversityCongmeng Lyu - Cooperative Institute for Research in Environmental SciencesBrian C McDonald - NOAA Chemical Sciences LaboratoryMark W Shephard - Environment and Climate Change CanadaJose L Jimenez - University of Colorado SystemHwajin Kim - Seoul National UniversityCheolsoo Lim - National Institute of Environmental ResearchHye-Jung Shin - National Institute of Environmental ResearchJeongAh Yu - National Institute of Environmental ResearchJack E Dibb - University of New Hampshire at ManchesterL Gregory Huey - Georgia Institute of TechnologyPaul O Wennberg - California Institute of TechnologyShannon Capps - Drexel UniversityJung-Hun Woo - Seoul National UniversityDuseong S Jo - Seoul National UniversityJhoon Kim - Yonsei University
- Publication Details
- Environmental science & technology
- Publisher
- AMER CHEMICAL SOC; WASHINGTON
- Number of pages
- 13
- Grant note
- National Aeronautics and Space Administration: 80NSSC21K1704 Ministry of Science and ICT, South Korea: 2020R1A2C2014131 Korea Environmental Industry and Technology Institute: RS-2023-00232066 National Environmental Satellite, Data, and Information Service: Proving Ground Risk Reduction Program
We would like to thank the KORUS-AQ (10.5067/Suborbital/KORUSAQ/DATA01) science team for providing an extensive observation data set. We thank Dr. Andrew Weinheimer (NCAR) for providing NO2 and O3 data from DC-8. We thank Michelle Kim, Alex Teng, and John Crounse for providing the CIMS HNO3 data. All the computing resources for model simulations are provided by the National Center for Meteorological Supercomputer.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:001649468600001
- Scopus ID
- 2-s2.0-105027464700
- Other Identifier
- 991022148106804721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Environmental
- Environmental Sciences