Results 71 to 80 of about 2,049 (178)

Evaluation of impact of residential heating on air quality of megacity Istanbul by CMAQ

Science of The Total Environment, 2019
Residential heating is one of the major sectors that contribute to emissions of harmful air pollutants in urban areas. In Istanbul, local sources are the main contributors of particulate matter levels. To quantify the contributions of residential heating sector to ambient particulate matter concentrations, we have developed an up to date spatially ...
Metin Baykara, Ulas Im, Alper Unal
openaire   +3 more sources

Improving Estimates of Prescribed Fire Smoke: Insights From a Novel Southeastern US Burn Permit Geodatabase

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The southeastern US accounts for over 60% of national prescribed (Rx) burning acreage and relies on Rx fire to reduce wildfire risk and sustain forest biodiversity. While ecologically beneficial, Rx fires may introduce smoke‐related risks to surrounding communities.
Jingting Huang, Jeffery B. Cannon, Holly K. Nowell, Christina H. Fuller   +3 more
wiley   +1 more source

iTransformer‐Informed Hourly Surface Ozone Forecasting Using Geostationary Satellite Observations

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Previous machine learning approaches for surface ozone (O3) forecasting are often limited to site‐specific applications and struggle to capture regional pollution dynamics. Here, we introduce an inverted Transformer (iTransformer), a time‐series model that integrates hourly satellite‐derived surface O3 with key meteorological and environmental
Fan Cheng, Jing Wei, Fuzhong Weng, Shan Zhou, Zeyu Yang, Yang Cheng, Jian Gao, Xinghua Qiu, Tong Zhu   +8 more
wiley   +1 more source

An investigation into atmospheric nitrous acid (HONO) processes in South Korea [PDF]

Atmospheric Chemistry and Physics
Nitrous acid (HONO) is a main precursor of hydroxyl radicals (OH), which contribute to the formation of numerous secondary air pollutants in the troposphere.
K. Kim, K. M. Han, C. H. Song, H. Lee, R. Beardsley, J. Yu, G. Yarwood, B. Koo, J. Madalipay, J.-H. Woo, S. Cho   +10 more
doaj   +1 more source

Investigation of NO_x emissions and NO_x-related chemistry in East Asia using CMAQ-predicted and GOME-derived NO₂ columns [PDF]

Atmospheric Chemistry and Physics, 2009
In this study, NO2 columns from the US EPA Models-3/CMAQ model simulations carried out using the 2001 ACE-ASIA (Asia Pacific Regional Aerosol Characterization Experiment) emission inventory over East Asia were compared with the GOME-derived NO2 columns ...
J. Y. Kim, J. P. Burrows, A. Richter, C. K. Lee, R. S. Park, J. H. Woo, H. J. Ahn, C. H. Song, K. M. Han, J. H. Hong   +9 more
doaj  

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   +1 more source

Improving the Characterization of Natural Emissions in CMAQ.

EM (Pittsburgh, Pa.)
Peer ...
Kang, Daiwen, Willison, Jeff, Sarwar, Golam, Madden, J Mike, Hogrefe, Christian, Mathur, Rohit, Gantt, Brett, Saiz-Lopez, A.   +7 more
openaire   +2 more sources

Chemical Data Assimilation with CMAQ: Continuous vs. Discrete Advection Adjoints [PDF]

, 2009
The Community Multiscale Air Quality (CMAQ) system is the Environmental Protection Agency's main modeling tool for atmospheric pollution studies. CMAQ-ADJ, the adjoint model of CMAQ, offers new capabilities such as receptor-oriented sensitivity analysis and chemical data assimilation.
Tianyi Gou, Kumaresh Singh, Adrian Sandu
openaire   +1 more source

An investigation into seasonal and regional aerosol characteristics in East Asia using model-predicted and remotely-sensed aerosol properties [PDF]

Atmospheric Chemistry and Physics, 2008
In this study, the spatio-temporal and seasonal distributions of EOS/Terra Moderate Resolution Imaging Spectroradiometer (MODIS)-derived aerosol optical depth (AOD) over East Asia were analyzed in conjunction with US EPA Models-3/CMAQ v4.3 modeling.
C. H. Song, M. E. Park, K. H. Lee, H. J. Ahn, Y. Lee, J. Y. Kim, K. M. Han, J. Kim, Y. S. Ghim, Y. J. Kim   +9 more
doaj  

Comparing CMAQ Forecasts with a Neural Network Forecast Model for PM2.5 in New York

Atmosphere, 2017
Human health is strongly affected by the concentration of fine particulate matter (PM2.5). The need to forecast unhealthy conditions has driven the development of Chemical Transport Models such as Community Multi-Scale Air Quality (CMAQ).
Samuel D. Lightstone, Fred Moshary, Barry Gross   +2 more
doaj   +1 more source