Results 11 to 20 of about 14,049 (292)

Dynamic Meteorology-induced Emissions Coupler (MetEmis) development in the Community Multiscale Air Quality (CMAQ): CMAQ-MetEmis [PDF]

Geoscientific Model Development, 2023
There have been consistent efforts to improve the spatiotemporal representations of biogenic/anthropogenic emission sources for photochemical transport modeling for better accuracy of local/regional air quality forecasts.
B. H. Baek, C. Coats, S. Ma, S. Ma, C.-T. Wang, Y. Li, J. Xing, D. Tong, D. Tong, S. Kim, J.-H. Woo   +10 more
doaj   +5 more sources

A multiphase CMAQ version 5.0 adjoint [PDF]

Geoscientific Model Development, 2019
Abstract. We present the development of a multiphase adjoint for the Community Multiscale Air Quality (CMAQ) model, a widely used chemical transport model. The adjoint model provides location- and time-specific gradients that can be used in various applications such as backward sensitivity analysis, source attribution, optimal pollution control, data ...
S. Zhao, M. G. Russell, A. Hakami, S. L. Capps, M. D. Turner, D. K. Henze, P. B. Percell, J. Resler, H. Shen, A. G. Russell, A. Nenes, A. Nenes, A. Nenes, A. J. Pappin, S. L. Napelenok, J. O. Bash, K. M. Fahey, G. R. Carmichael, C. O. Stanier, T. Chai   +19 more
openaire   +6 more sources

Fine-Scale Columnar and Surface NO_x Concentrations over South Korea: Comparison of Surface Monitors, TROPOMI, CMAQ and CAPSS Inventory

Atmosphere, 2020
Fine-scale nitrogen oxide (NOx) concentrations over South Korea are examined using surface observations, satellite data and high-resolution model simulations based on the latest emission inventory.
Hyun Cheol Kim, Soontae Kim, Sang-Hyun Lee, Byeong-Uk Kim, Pius Lee   +4 more
doaj   +2 more sources

Description and evaluation of the Community Multiscale Air Quality (CMAQ) modeling system version 5.1 [PDF]

Geoscientific Model Development, 2017
The Community Multiscale Air Quality (CMAQ) model is a comprehensive multipollutant air quality modeling system developed and maintained by the US Environmental Protection Agency's (EPA) Office of Research and Development (ORD).
K. W. Appel, S. L. Napelenok, K. M. Foley, H. O. T. Pye, C. Hogrefe, D. J. Luecken, J. O. Bash, S. J. Roselle, J. E. Pleim, H. Foroutan, W. T. Hutzell, G. A. Pouliot, G. Sarwar, K. M. Fahey, B. Gantt, R. C. Gilliam, N. K. Heath, D. Kang, R. Mathur, D. B. Schwede, T. L. Spero, D. C. Wong, J. O. Young   +22 more
doaj   +2 more sources

A comparative study of two-way and offline coupled WRF v3.4 and CMAQ v5.0.2 over the contiguous US: performance evaluation and impacts of chemistry–meteorology feedbacks on air quality [PDF]

Geoscientific Model Development, 2021
The two-way coupled Weather Research and Forecasting and Community Multiscale Air Quality (WRF-CMAQ) model has been developed to more realistically represent the atmosphere by accounting for complex chemistry–meteorology feedbacks.
K. Wang, Y. Zhang, S. Yu, D. C. Wong, J. Pleim, R. Mathur, J. T. Kelly, M. Bell   +7 more
doaj   +2 more sources

Future year ozone source attribution modeling study using CMAQ-ISAM [PDF]

Journal of the Air & Waste Management Association, 2018
To achieve the current United States National Ambient Air Quality Standards (NAAQS) attainment level for ozone or particulate matter, current photochemical air quality models include tools to determine source apportionment and/or source sensitivity.
Susan Collet, Toru Kidokoro, Prakash Karamchandani, Jaegun Jung, Tejas Shah   +4 more
openalex   +3 more sources

Modeling stratospheric intrusion and trans-Pacific transport on tropospheric ozone using hemispheric CMAQ during April 2010 – Part 1: Model evaluation and air mass characterization for stratosphere–troposphere transport [PDF]

Atmospheric Chemistry and Physics, 2020
Stratospheric intrusion and trans-Pacific transport have been recognized as a potential source of tropospheric ozone over the US. The state-of-the-science Community Multiscale Air Quality (CMAQ) modeling system has recently been extended for hemispheric ...
Syuichi Itahashi, Rohit Mathur, Christian Hogrefe, Yang Zhang   +3 more
openalex   +2 more sources

Updates to the Noah Land Surface Model in WRF‐CMAQ to Improve Simulated Meteorology, Air Quality, and Deposition

Journal of Advances in Modeling Earth Systems, 2019
Regional, state, and local environmental regulatory agencies often use Eulerian models to investigate the potential impacts on pollutant deposition and air quality from changes in land use, anthropogenic and natural emissions, and climate.
Patrick C. Campbell, Jesse O. Bash, Tanya L. Spero   +2 more
doaj   +2 more sources

Source Attribution of PM2.5 Health Benefits over Northern Hemisphere Using Adjoint of Hemispheric CMAQ

GeoHealth, Volume 10, Issue 1, January 2026.
Abstract The adjoint of the U.S. EPA's Community Multiscale Air Quality (CMAQ) model is extended for hemispheric scale applications and is used to estimate location‐specific health impacts from primary PM2.5, and PM2.5 precursor emissions (NH3, NOX and SO2). We estimate the monetized health burden due to mortality caused by chronic PM2.5 exposure among
Barron Henderson
openalex   +2 more sources

Sensibility Study for PBL Scheme of WRF-CMAQ

Journal of Korean Society for Atmospheric Environment, 2011
Numerical simulations were carried out to investigate the impact of PBL (Planetary boundary layer) scheme implemented in WRF on the result of meteorological fields and CMAQ modeling. 25-day period, representing high ozone concentration, was selected for the simulations.
Nankyoung Moon, Soontae Kim, Jihyun Seo
openalex   +3 more sources