Results 81 to 90 of about 3,824 (208)

Tendencies of Soil Microbial NO Emissions During HI‐SCALE as Predicted by a Nitrification/Denitrification Scheme

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Many atmospheric chemical processes, including the formation of secondary organic aerosol (SOA), are strongly modulated by the reactions of NO and NO2NOx ${\text{NO}}_{2}\ \left({\text{NO}}_{x}\right)$. Though NOx ${\text{NO}}_{x}$ is controlled by anthropogenic emissions near urban areas, in rural areas soil microbes can be a significant ...
B. Gaudet, J. Fast, Q. Rasool, M. Shrivastava, S.‐L. Tai, R. Zaveri, J. Zhang   +6 more
wiley   +1 more source

A framework for expanding aqueous chemistry in the Community Multiscale Air Quality (CMAQ) model version 5.1 [PDF]

Geoscientific Model Development, 2017
This paper describes the development and implementation of an extendable aqueous-phase chemistry option (AQCHEM − KMT(I)) for the Community Multiscale Air Quality (CMAQ) modeling system, version 5.1.
K. M. Fahey, A. G. Carlton, H. O. T. Pye, J. Baek, W. T. Hutzell, C. O. Stanier, K. R. Baker, K. W. Appel, M. Jaoui, J. H. Offenberg   +9 more
doaj   +1 more source

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

Transport Pathways of Ozone in Beijing–Tianjin–Hebei Based on Causal Networks

Meteorological Applications, Volume 33, Issue 2, March/April 2026.
Applying convergent cross‐mapping and complex network methods, multi‐year, summer and winter O3 concentration transport network models were constructed based on the causal relationship between stations, and it was found that O3 transport in the Beijing–Tianjin–Hebei region was significantly affected by O3 concentration, meteorology, and station ...
Zhen Song, Na Ying, Zhigang Xue, Weiling Xiang, Hongli Song, Jingxu Wang, Xiangzhe Zhu   +6 more
wiley   +1 more source

Measured and modelled ozone photochemical production in the Baltimore-Washington airshed

Atmospheric Environment: X, 2019
Ozone production efficiency (OPE) represents the number of ozone (O3) molecules produced per molecule of NOx (NO2+NO), before NOx is converted to a sink or reservoir species. Observations from NASA's July 2011 DISCOVER-AQ (D-AQ) campaign in the Baltimore-
Linda Hembeck, Hao He, Timothy P. Vinciguerra, Timothy P. Canty, Russell R. Dickerson, Ross J. Salawitch, Christopher Loughner   +6 more
doaj   +1 more source

Harmful Effects of Ambient Nitrogen Dioxide on Atopic Dermatitis: Comparison of Exposure Assessment Based on Monitored Concentrations and Modeled Estimates

Atmosphere, 2020
Precise exposure assessment of air pollutants is crucial in epidemiologic studies to ensure valid estimates of health effects. We conducted a longitudinal study to evaluate the role of air quality monitoring (AQM) measurements and high-resolution ...
Young-Min Kim, Inbo Oh, Jihyun Kim, Yoon-Hee Kang, Kangmo Ahn   +4 more
doaj   +1 more source

The impact of satellite-adjusted NO_x emissions on simulated NO_x and O₃ discrepancies in the urban and outflow areas of the Pacific and Lower Middle US [PDF]

Atmospheric Chemistry and Physics, 2014
We analyze the simulation results from a CMAQ model and GOME-2 NO2 retrievals over the United States for August 2009 to estimate the model-simulated biases of NOx concentrations over six geological regions (Pacific Coast = PC, Rocky Mountains = RM, Lower
Y. Choi
doaj   +1 more source

Comparison and Assessment of Two Emission inventories for the Madrid Region

, 2011
Emission inventories are databases that aim to describe the polluting activities that occur across a certain geographic domain. According to the spatial scale, the availability of information will vary as well as the applied assumptions, which will ...
Borge García, Rafael, Vedrenne, Michel, Lumbreras Martin, Julio, Rodríguez Hurtado, María Encarnación, Paz Martín, David de la   +4 more
core   +1 more source

Incorporating Gas‐Phase Chemistry Into the Unified Forecast System (UFS) for Global Air Quality Applications

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract The Unified Forecast System (UFS) is a community‐based Earth modeling system designed to support operational forecasts at the National Oceanic and Atmospheric Administration (NOAA), while also facilitating the integration of research advances from the broader scientific community.
Jian He, Li Zhang, Rebecca H. Schwantes, Barry Baker, Larry Horowitz, Vaishali Naik, Congmeng Lyu, Zachary Moon, Georg Grell, Ravan Ahmadov, Jordan Schnell, Kai Yang, Zigang Wei, Siyuan Wang, Kai‐Lan Chang, Alan M. Gorchov Negron, Aihua Zhu, Shobha Kondragunta, Eric C. Apel, Ilann Bourgeois, Róisín Commane, Samuel R. Hall, Alan Hills, Rebecca S. Hornbrook, Jeff Peischl, Kirk Ullmann, Gonzalo González Abad, Zolal Ayazpour, Caroline Nowlan, Brian C. McDonald   +29 more
wiley   +1 more source

Quantifying the Sources of the Severe Haze over the Southern Hebei Using the CMAQ Model [PDF]

The Scientific World Journal, 2013
The Southern Hebei of China has experienced an obvious increase of the haze occurrence frequency in the recent years. It has turned out to be one of the most seriously polluted areas in China. This study is aimed at quantifying the sources of the serious haze pollution over the Southern Hebei area, using the Mesoscale Modeling System Generation 5 (MM5)
Jing Yang, Pu Zhang, Chenchen Meng, Jie Su, Zhe Wei, Fenfen Zhang, Wei Wei, Xiujuan Zhao   +7 more
openaire   +3 more sources