Results 61 to 70 of about 2,049 (178)

The Impact of Nocturnal Boundary Layer Height on Daytime Surface Particulate Nitrate Increases by Vertical Transport From the Residual Layer

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Particulate nitrate (pNO3−) has become a critical air‐quality issue, with pronounced morning increases in surface concentrations attributed to downward transport from upper layer. However, how the nocturnal boundary layer evolution modulates this process remains unclear.
Yujie Qin, Shaojia Fan, Xiaorui Chen, Hongxia Liu, Xiaobing Li, Xiaoxiao Zhang, Bin Yuan, Haichao Wang   +7 more
wiley   +1 more source

Evaluation of air quality using the CMAQ modeling system

Procedia Environmental Sciences, 2012
AbstractAir pollution in modern city is very important for people's health and environment management. In order to improve air quality forecasting and air pollution simulation in China, this paper gives a method of analyzing and evaluating air pollutants ozone using the Community Multiscale Air Quality modeling system.
Luo, Xi, Cao, Han
openaire   +1 more source

Adapting CMAQ to investigate air pollution in North Sea coastal regions [PDF]

Environmental Modelling & Software, 2008
The Models-3 Community Multiscale Air Quality (CMAQ) model is setup on a 54x54km^2 grid for Europe and on a nested smaller domain with a 18x18km^2 grid for the North Sea region. This paper concentrates on the models ability to represent the transport and deposition of atmospheric pollution in North Sea coastal areas.
Volker Matthias, A. Aulinger, M. Quante
openaire   +2 more sources

Contrasting Mechanisms of Heatwave‐Ozone Pollution Compound Events and Independent Heatwave Events in the Yangtze River Delta

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract Heat waves do not always coincide with ozone pollution, yet the mechanisms controlling their divergence remain insufficiently understood. Here, we investigate why some heat waves evolved into heatwave‐ozone pollution compound events (HWOP), whereas others remained isolated heat wave events (IHW), over the Yangtze River Delta during summer 2024.
Jiaying Pan, Zhanning Huang, Huiling Ouyang, Xiaoyan Wang   +3 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

Observation‐Constrained Fossil Fuel CO2 Emissions Reveal Post‐2018 Stabilization in China

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Accurate quantification of interannual variations in China's fossil fuel CO2 (FFCO2) emissions is critical for climate policy evaluation. However, bottom‐up inventories exhibit growing discrepancies. Here, we estimate China's 2015–2023 FFCO2 emissions using the Regional multi‐Air Pollutant Assimilation System, integrating in situ observations ...
Shuzhuang Feng, Yang Shen, Fei Jiang, Mengwei Jia, Yu Mao, Hengmao Wang, Weimin Ju   +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

D‐DNet: A Dual Deep Neural Network Framework for High‐Efficiency Operational PM2.5 and AOD550 Forecasting With Data Assimilation

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Accurate forecasting of PM2.5 (particulate matter with diameter ≤2.5 μm) and AOD550 (aerosol optical depth at 550 nm) is crucial for air quality management, public health, and environmental policy. Traditional physics‐based forecasting systems, though robust, require computationally intensive simulations and data assimilation (DA) schemes that
Shengjuan Cai, Fangxin Fang, Vincent‐Henri Peuch, Mihai Alexe, Ionel Michael Navon, Yanghua Wang   +5 more
wiley   +1 more source