Results 141 to 150 of about 2,049 (178)

A performance evaluation of the 2004 release of Models-3 CMAQ

Atmospheric Environment, 2006
Abstract This performance evaluation compares a full annual simulation (2001) of Community Multi-scale Air Quality (CMAQ) (Version 4.4) covering the contiguous United States against monitoring data from four nationwide networks. This effort, which represents one of the most spatially and temporally comprehensive performance evaluations of the model ...
Brian K. Eder, Shaocai Yu
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Ozone sensitivity analysis with the MM5-CMAQ modeling system for Shanghai

Journal of Environmental Sciences, 2011
Ozone has become one of the most important air pollution issues around the world. This article applied both O3/(NO(y)-NO(x)) and H2O2/HNO3 indicators to analyze the ozone sensitivity in urban and rural areas of Shanghai, with implementation of the MM5-CMAQ modeling system in July, 2007. The meteorological parameters were obtained by using the MM5 model.
Li, Li, Changhong, Chen, Cheng, Huang, Haiying, Huang, Gangfeng, Zhang, Yangjun, Wangi, Minghua, Chen, Hongli, Wang, Yiran, Chen, D G, Streets, Jiamo, Fu   +10 more
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Diagnostic Evaluation of Carbon Sources in CMAQ

2013
Traditional monitoring networks measure only total elemental carbon (EC) and organic carbon (OC) routinely. Diagnosing model biases with such limited information is difficult. Measurements of organic tracer compounds have recently become available and allow for more detailed diagnostic evaluation of CMAQ modeling results, which allow for more explicit ...
Sergey L. Napelenok, Prakash V. Bhave, Heather Simon, George A. Pouliot, Michael Lewandowski, Rebecca Sheesley   +5 more
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Evaluation of Fine Particle Number Concentrations in CMAQ

Aerosol Science and Technology, 2006
The Community Multiscale Air Quality (CMAQ) model is widely used in air quality management and scientific investigation. Numerous studies have been conducted investigating how well CMAQ simulates fine particle mass concentrations, but relatively few studies have addressed how well CMAQ simulates fine particle number distribution. Accurate simulation of
Sun-Kyoung Park, Amit Marmur, Seoung Bum Kim, Di Tian, Yongtao Hu, Peter H. McMurry, Armistead G. Russell   +6 more
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Learning from Experiments: An Evaluation Plan for CMAQ Projects [PDF]

, 1998
The Congestion Mitigation/Air Quality Program (CMAQ), established in 1991 by the Intermodal Surface Transportation Efficiency Act (ISTEA) to provide about $1 billion per year to fund transportation projects that improve air quality, is intended both to support traditional transportation control measures and to encourage innovation in developing new ...
Farrell, Deirdre, Harrington, Winston, Krupnick, Alan J., Farrell, Deirdre, Harrington, Winston, Krupnick, Alan J.   +5 more
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Improving the particle dry deposition scheme in the CMAQ photochemical modeling system

Atmospheric Environment, 2022
Dry deposition of atmospheric aerosols in large-scale models is a critical, but highly uncertain, sink process with a strong dependence on particle size, meteorological conditions, and land surface properties. This study investigates the particle dry deposition scheme implemented in the standard Community Multiscale Air Quality (CMAQ) model v5.2.1 ...
Qian Shu, Benjamin Murphy, Donna Schwede, Barron H. Henderson, Havala O.T. Pye, K. Wyat Appel, Tanvir R. Khan, Judith A. Perlinger   +7 more
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Applying for and using CMAQ funds

1997
This guide provides the basic concepts to aid in an alternative fuel vehicle market development program developing an application for Congestion Mitigation and Air Quality (CMAQ) Improvement Program funding. The U.S. Department of Energy's Clean Cities Program is an aggressive, forward-thinking alternative fuel vehicle (AFV) market development program.
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Comparison of spatial patterns of pollutant distribution with CMAQ predictions

Atmospheric Environment, 2006
Abstract To evaluate the Models-3/Community Multiscale Air Quality (CMAQ) modeling system in reproducing the spatial patterns of aerosol concentrations over the country on timescales of months and years, the spatial patterns of model output are compared with those derived from observational data.
Sharon B. Phillips, Peter L. Finkelstein
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Application of Models-3/CMAQ on Asian Dust Storm

Advanced Materials Research, 2011
A coupled modeling system has been developed to describe the mineral dust cycle in the atmosphere. It is composed of MM5, ECIP, WE (wind erosion model) and CMAQ. A strong dust storm of North China in 2002 is simulated by this system. The modeled results show good consistent with observations and pre-existing researches in aspects of dust emission flux ...
Yi Bai Wang, Jian Fang Fei, Xiao Gang Huang, Xiao Ping Cheng, Yi Jun Ge   +4 more
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Influence of vertical mixing uncertainties on ozone simulation in CMAQ

Atmospheric Environment, 2011
Abstract This study explores the extent to which uncertainties in the formulation of vertical diffusion schemes and in associated model parameters affect predictions of ozone levels and their responsiveness to emission controls in the Community Multiscale Air Quality (CMAQ) model. CMAQ is applied with two vertical diffusion schemes, eddy viscosity (K-
Wei Tang, Daniel S. Cohan, Gary A. Morris, Daewon W. Byun, Winston T. Luke   +4 more
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