Results 61 to 70 of about 3,824 (208)

A regional carbon data assimilation system and its preliminary evaluation in East Asia [PDF]

Atmospheric Chemistry and Physics, 2015
In order to optimize surface CO2 fluxes at grid scales, a regional surface CO2 flux inversion system (Carbon Flux Inversion system and Community Multi-scale Air Quality, CFI-CMAQ) has been developed by applying the ensemble Kalman filter (EnKF) to ...
Z. Peng, M. Zhang, X. Kou, X. Tian, X. Ma   +4 more
doaj   +1 more source

iTransformer‐Informed Hourly Surface Ozone Forecasting Using Geostationary Satellite Observations

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Previous machine learning approaches for surface ozone (O3) forecasting are often limited to site‐specific applications and struggle to capture regional pollution dynamics. Here, we introduce an inverted Transformer (iTransformer), a time‐series model that integrates hourly satellite‐derived surface O3 with key meteorological and environmental
Fan Cheng, Jing Wei, Fuzhong Weng, Shan Zhou, Zeyu Yang, Yang Cheng, Jian Gao, Xinghua Qiu, Tong Zhu   +8 more
wiley   +1 more source

Extending the Community Multiscale Air Quality (CMAQ) modeling system to hemispheric scales: overview of process considerations and initial applications [PDF]

Atmospheric Chemistry and Physics, 2017
The Community Multiscale Air Quality (CMAQ) modeling system is extended to simulate ozone, particulate matter, and related precursor distributions throughout the Northern Hemisphere.
R. Mathur, J. Xing, J. Xing, R. Gilliam, G. Sarwar, C. Hogrefe, J. Pleim, G. Pouliot, S. Roselle, T. L. Spero, D. C. Wong, J. Young   +11 more
doaj   +1 more source

Application and Evaluation of a NOAA GFS‐Driven Air Quality Model Using CMAQv5.4 and High‐Resolution Emissions: FIREX‐AQ 2019

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract The National Air Quality Forecast Capability (NAQFC) provides numerical forecasting guidance of air quality up to 72 hr ahead over the United States. In this study, we evaluate the changes in its prediction skills by updating the Community Multiscale Air Quality (CMAQ) modeling system from version 5.3.1 to 5.4 and utilizing a high‐resolution 1‐
Kiarash Farzad, Yang Zhang, Daniel Tong, Siqi Ma, Youhua Tang, Jianping Huang, Patrick C. Campbell, Havala O. T. Pye, Benjamin Murphy, Fanglin Yang, Barry Baker, Daiwen Kang, Bill Hutzell, Golam Sarwar   +13 more
wiley   +1 more source

Simulation of GOES-R ABI aerosol radiances using WRF-CMAQ: a case study approach [PDF]

Atmospheric Chemistry and Physics, 2014
In anticipation of the upcoming GOES-R launch we simulate visible and near-infrared reflectances of the Advanced Baseline Imager (ABI) for cases of high aerosol loading containing regional haze and smoke over the eastern United States.
S. A. Christopher
doaj   +1 more source

GMU-CMAQ PM2.5 forecast for 2020 GigaFire

, 2023
{"references": ["Briggs, G. A.: Plume rise, Tech. Rep. Crit. Rev. Ser. 81pp., Natl. Tech. Inf. Serv., Springfield, VA, 1969.", "Freitas, S. R., Longo, K. M., Chatfield, R., Latham, D., Silva Dias, M. A. F., Andreae, M. O., Prins, E., Santos, J. C., Gielow, R., & Carvalho, J. A.
openaire   +2 more sources

Plant species richness response to atmospheric nitrogen deposition across bedrock types in the United States and Czechia

Ecosphere, Volume 17, Issue 5, May 2026.
Abstract Atmospheric nitrogen (N) deposition leads to many changes in terrestrial and aquatic ecosystems, affecting ecosystem processes and species composition. Terrestrial vegetation often shifts from being N‐limited to light‐limited and becomes dominated by a few fast‐growing strong competitors and generalist species.
Tomáš Chuman, Christopher M. Clark
wiley   +1 more source

CMASCenter/pcluster-cmaq: CMAQ on AWS Tutorial Version 5.3.3

<p>Code for the readthedocs tutorial to run CMAQ on AWS using Version 5.3.3 to support <a href="https://pcluster-cmaq.readthedocs.io/en/cmaqv5.3.3/">CMAQ Version 5.3.3 on AWS readthedocs tutorial</a></p ...
Christos Efstathiou, Liz Adams, Kristen Foley   +2 more
core   +2 more sources

A study on the aerosol optical properties over East Asia using a combination of CMAQ-simulated aerosol optical properties and remote-sensing data via a data assimilation technique [PDF]

Atmospheric Chemistry and Physics, 2011
To more accurately estimate direct radiative forcing (DRF) by aerosols, and better investigate particulate pollution over East Asia, precise calculations of the optical properties of aerosols, such as aerosol optical depth (AOD), single scattering albedo
R. S. Park, C. H. Song, K. M. Han, M. E. Park, S.-S. Lee, S.-B. Kim, A. Shimizu   +6 more
doaj   +1 more source

Regional Transport in the Arctic: Sensitivity of NOx and Particulate Matter in Wintertime Urban Alaska to Background Air

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Fairbanks, Alaska is an example of a subarctic city that experiences severe wintertime air quality episodes characterized by high concentrations of fine particulate matter (PM2.5) and nitrogen oxides (NO and NO2 = NOx). Previous research into these air quality episodes has focused on the impact of surface‐based inversions that trap local ...
Alicia Hoffman, Steve R. Arnold, Dwayne Heard, Lisa Whalley, Natalie Brett, Kathy S. Law, Jean‐Christophe Raut, Tatsuo Onishi, Slimane Bekki, William R. Simpson, Meeta Cesler‐Maloney, Brice Barret, Roman Pohorsky, Julia Schmale, Brice Temime‐Roussel, Barbara D’Anna   +15 more
wiley   +1 more source