Results 11 to 20 of about 1,908 (162)

Source Attribution of PM_2.5 Health Benefits Over Northern Hemisphere Using Adjoint of Hemispheric CMAQ. [PDF]

Geohealth
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
Oztaner YB, Zhao S, Henderson B, Mathur R, Hakami A.   +4 more
europepmc   +2 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   +5 more sources

Comparative evaluation of the impact of WRF/NMM and WRF/ARW meteorology on CMAQ simulations for PM_2.5 and its related precursors during the 2006 TexAQS/GoMACCS study [PDF]

Atmospheric Chemistry and Physics, 2012
This study presents a comparative evaluation of the impact of WRF-NMM and WRF-ARW meteorology on CMAQ simulations of PM2.5, its composition and related precursors over the eastern United States with the intensive observations obtained by aircraft (NOAA ...
S. T. Rao, R. Gilliam, K. Schere, B. Eder, D. Wong, G. Pouliot, J. Pleim, R. Mathur, S. Yu   +8 more
doaj   +1 more source

Understanding sources of organic aerosol during CalNex-2010 using the CMAQ-VBS [PDF]

Atmospheric Chemistry and Physics, 2016
Community Multiscale Air Quality (CMAQ) model simulations utilizing the traditional organic aerosol (OA) treatment (CMAQ-AE6) and a volatility basis set (VBS) treatment for OA (CMAQ-VBS) were evaluated against measurements collected at routine ...
M. C. Woody, K. R. Baker, P. L. Hayes, P. L. Hayes, P. L. Hayes, J. L. Jimenez, J. L. Jimenez, B. Koo, H. O. T. Pye   +8 more
doaj   +1 more source

Contribution of Satellite-Derived Aerosol Optical Depth PM_2.5 Bayesian Concentration Surfaces to Respiratory-Cardiovascular Chronic Disease Hospitalizations in Baltimore, Maryland

Atmosphere, 2020
The fine particulate matter baseline (PMB), which includes PM2.5 monitor readings fused with Community Multiscale Air Quality (CMAQ) model predictions, using the Hierarchical Bayesian Model (HBM), is less accurate in rural areas without monitors.
John T. Braggio, Eric S. Hall, Stephanie A. Weber, Amy K. Huff   +3 more
doaj   +1 more source

Evaluation of the Effect of Regional Pollutants and Residual Ozone on Ozone Concentrations in the Morning in the Inland of the Kanto Region

Asian Journal of Atmospheric Environment, 2015
Increasing ozone concentrations are observed over Japan from year to year. One cause of high ozone concentration in the Kanto region, which includes areas inland from large coastal cities such as metropolitan Tokyo, is the transportation of precursors by
Yusuke Kiriyama, Hikari Shimadera, Syuichi Itahashi, Hiroshi Hayami, Kazuhiko Miura   +4 more
doaj   +1 more source

Sensitivity of the Community Multiscale Air Quality (CMAQ) model v4.7 results for the eastern United States to MM5 and WRF meteorological drivers [PDF]

Geoscientific Model Development, 2010
This paper presents a comparison of the operational performances of two Community Multiscale Air Quality (CMAQ) model v4.7 simulations that utilize input data from the 5th-generation Mesoscale Model (MM5) and the Weather Research and Forecasting (WRF ...
K. W. Appel, S. J. Roselle, R. C. Gilliam, J. E. Pleim   +3 more
doaj   +1 more source

A comparison study between CMAQ-simulated and OMI-retrieved NO₂ columns over East Asia for evaluation of NO_x emission fluxes of INTEX-B, CAPSS, and REAS inventories [PDF]

Atmospheric Chemistry and Physics, 2015
Comparison between the CMAQ (Community Multi-scale Air Quality Model)-calculated and OMI (Ozone Monitoring Instrument)-retrieved tropospheric NO2 columns was carried out for 2006 over East Asia (100–150° E; 20–50° N) to evaluate the bottom-up NOx ...
K. M. Han, S. Lee, L. S. Chang, C. H. Song   +3 more
doaj   +1 more source

Impacts of different characterizations of large-scale background on simulated regional-scale ozone over the continental United States [PDF]

Atmospheric Chemistry and Physics, 2018
This study analyzes simulated regional-scale ozone burdens both near the surface and aloft, estimates process contributions to these burdens, and calculates the sensitivity of the simulated regional-scale ozone burden to several key model inputs with ...
C. Hogrefe, P. Liu, G. Pouliot, R. Mathur, S. Roselle, J. Flemming, M. Lin, M. Lin, R. J. Park   +8 more
doaj   +1 more source

EAKF‐CMAQ: Introduction and evaluation of a data assimilation for CMAQ based on the ensemble adjustment Kalman filter [PDF]

Journal of Geophysical Research: Atmospheres, 2008
A new approach is presented for data assimilation using the ensemble adjustment Kalman filter (EAKF) technique for surface measurements of carbon monoxide in a single tracer version of the community air quality model. An implementation of the EAKF known as the Data Assimilation Research Testbed at the National Center for Atmospheric Research was used ...
Zubrow, A, Chen, L, Kotamarthi, VR
openaire   +2 more sources