Results 11 to 20 of about 1,998 (179)

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

J Geophys Res Atmos
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‐
Farzad K, Zhang Y, Tong D, Ma S, Tang Y, Huang J, Campbell PC, Pye HOT, Murphy B, Yang F, Baker B, Kang D, Hutzell B, Sarwar G.   +13 more
europepmc   +2 more sources

A Comparative Analysis of Wildland Fire Smoke PM_2.5 Exposure Estimates Across California From 2008 to 2018. [PDF]

Geohealth
Abstract The development of smoke fine particulate matter (PM2.5) exposure surfaces for estimating air pollution trends and associated health effects has advanced considerably. Currently available smoke exposure products rely on various data sources and modeling techniques, as there is no gold standard method for modeling wildfire smoke PM2.5.
Connolly R, Nguyen JT, Walker A, Wilkins J, Ma Y, Aguilera R, Chen C, Gershunov A, Casey JA, Qiu M, Zhang D, Liu Y, Benmarhnia T, Jerrett M, Marlier ME.   +14 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   +6 more sources

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

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

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

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   +1 more source