Results 131 to 140 of about 2,049 (178)

Predicted impacts of heterogeneous chemical pathways on particulate sulfur over Fairbanks (Alaska), the Northern Hemisphere, and the Contiguous United States. [PDF]

Atmos Chem Phys
Farrell SL, Pye HOT, Gilliam R, Pouliot G, Huff D, Sarwar G, Vizuete W, Briggs N, Duan F, Ma T, Zhang S, Fahey K.   +11 more
europepmc   +1 more source

GPU Implementation of a Gas-Phase Chemistry Solver in the CMAQ Chemical Transport Model. [PDF]

ACS EST Air
Quevedo D, Do K, Delic G, Rodríguez-Borbón J, Wong BM, Ivey CE.   +5 more
europepmc   +1 more source

Critical load exceedances for North America and Europe using an ensemble of models and an investigation of causes of environmental impact estimate variability: an AQMEII4 study. [PDF]

Atmos Chem Phys
Makar PA, Cheung P, Hogrefe C, Akingunola A, Alyuz U, Bash JO, Bell MD, Bellasio R, Bianconi R, Butler T, Cathcart H, Clifton OE, Hodzic A, Kioutsioukis I, Kranenburg R, Lupascu A, Lynch JA, Momoh K, Perez-Camanyo JL, Pleim J, Ryu YH, San Jose R, Schwede D, Scheuschner T, Shephard MW, Sokhi RS, Galmarini S.   +26 more
europepmc   +1 more source

Evaluation of CMAQ Coupled With a State‐of‐the‐Art Mercury Chemical Mechanism (CMAQ‐newHg‐Br)

Journal of Advances in Modeling Earth Systems, 2018
AbstractMost regional three‐dimensional chemical transport models neglect gaseous elemental mercury (GEM) oxidation by bromine (Br) radicals and Br chemistry. In this study, the Community Multiscale Air Quality model with its default mercury module (CMAQ‐Hg) was modified by implementing a state‐of‐the‐art algorithm depicting Hg reactions coupled with ...
Zhuyun Ye, Huiting Mao
exaly   +3 more sources

Modeling of Organic Aerosol in Seoul Using CMAQ with AERO7

Atmosphere, 2023
The Community Multiscale Air Quality (CMAQ) model with the 7th generation aerosol module (AERO7) was employed to simulate organic aerosol (OA) in Seoul, Korea, for the year 2016. The goal of the present study includes the 1-year simulation of OA using WRF-CMAQ with recently EPA-developed AERO7 with pcVOC (potential VOC from combustion) scale factor ...
Sung-Chul Hong
exaly   +3 more sources

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The Adjoint of CMAQ

Environmental Science & Technology, 2007
An adjoint model for the internationally used Community Multiscale Air Quality (CMAQ) modeling platform of the U.S. EPA is developed. The adjoint version for CMAQ (CMAQ-ADJ) provides the user community with forward (decoupled direct method or DDM) and backward (adjoint) sensitivity analysis capabilities.
Hakami, Amir, Henze, Daven K., Seinfeld, John H., Singh, Kumaresh, Sandu, Adrian, Kim, Soontae, Byun, Daewon, Li, Qinbin   +7 more
openaire   +3 more sources

A Bayesian statistical approach for the evaluation of CMAQ

Atmospheric Environment, 2006
Bayesian statistical methods are used to evaluate Community Multiscale Air Quality (CMAQ) model simulations of sulfate aerosol over a section of the eastern US for 4-week periods in summer and winter 2001. The observed data come from two U.S. Environmental Protection Agency data collection networks.
Jenise L. Swall, Jerry M. Davis
openaire   +1 more source

An objective comparison of CMAQ and REMSAD performances

Atmospheric Environment, 2006
Abstract Photochemical air quality modeling systems are the primary tools used in regulatory applications to assess the impact of different emission reduction strategies aimed at reducing air pollutant concentrations to levels considered safe for public health.
Edith Gégo, P. Steven Porter, Christian Hogrefe, John S. Irwin   +3 more
openaire   +1 more source

Simulation at Neighborhood Scale with Cmaq

2004
We investigate air quality (AQ) modeling at very high spatial resolutions (on order of 1-km horizontal grid spacing), defined as neighborhood scales, as a means to perform human exposure and risk-based assessments (with emphasis on air toxic pollutants).
Sylvain Dupont, Tanya L. Otte, Jason Ching   +2 more
openaire   +1 more source

CMAQ in the states : a preliminary assessment of the CMAQ program's contribution toward meeting ozone standards

1998
The Congestion Mitigation and Air Quality Improvement (CMAQ) program provides funds to states for projects designed to help metropolitan areas attain and maintain the national ambient air quality standards (NAAQS). The objective of this analysis is to estimate the potential contribution of the CMAQ program in helping ozone non-attainment areas to move ...
Grant, Michael, Guruswamy, Dharm, Petersen, Britt   +2 more
openaire   +1 more source