Numerical Weather Prediction Models in Atmospheric Dispersion

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Atmospheric Techniques, Instruments, and Modeling".

Deadline for manuscript submissions: closed (20 September 2019) | Viewed by 4739

Special Issue Editor


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Guest Editor
National Centre for Atmospheric Science, Fairbairn House, Leeds LS2 9PH, UK
Interests: atmospheric modelling; dispersion; numerical weather prediction models; dynamical meteorology

Special Issue Information

Dear Colleagues,

Atmospheric dispersion of pollutants is of major interest to the public: from city-scale (such as vehicle emissions, industrial accidents) to continental and even global scale (such as the spread of volcanic gases and particulate matter), dispersion effects are likely to be of high impact and are often hazardous. Thus, the ability to realistically model such dispersion is crucial.

Recent advances in computational power have allowed numerical weather prediction (NWP) models to simulate the release and subsequent dispersion of pollutants. There are many advantages of using NWP models to simulate dispersion: such models usually contain state-of-the-art representations of a whole range of physical processes, such as turbulence and microphysics, they employ time-varying meteorological boundary conditions coupled with detailed surface characteristics, and they have a wide user base and support network. Some models also include full or partial chemistry, others simulate dispersion using passive tracers.

Articles are invited on all aspects of the use of NWP-type models in atmospheric dispersion including, but not limited to, case studies of individual events, broader climatological studies, novel techniques and applications of NWP in atmospheric dispersion modelling, emergency planning and the response to natural phenomena such as volcanic activity, the effects of topography upon dispersion, the influence of physical processes such as radiative effects, deposition, buoyancy, idealised frameworks or large-eddy formulations to determine or characterise dispersion properties.

Dr. Ralph Burton
Guest Editor

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Keywords

  • Atmospheric dispersion
  • Numerical weather prediction
  • Modelling
  • Air quality
  • Chemical transport

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Published Papers (1 paper)

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Research

28 pages, 8306 KiB  
Article
Multi-Model Evaluation of Meteorological Drivers, Air Pollutants and Quantification of Emission Sources over the Upper Brahmaputra Basin
by Arshini Saikia, Binita Pathak, Prashant Singh, Pradip Kumar Bhuyan and Bhupesh Adhikary
Atmosphere 2019, 10(11), 703; https://doi.org/10.3390/atmos10110703 - 13 Nov 2019
Cited by 11 | Viewed by 4286
Abstract
The temporal distributions of meteorological drivers and air pollutants over Dibrugarh, a location in the upper Brahmaputra basin, are studied using observations, models and reanalysis data. The study aims to assess the performance of the Weather Research and Forecasting model coupled with chemistry [...] Read more.
The temporal distributions of meteorological drivers and air pollutants over Dibrugarh, a location in the upper Brahmaputra basin, are studied using observations, models and reanalysis data. The study aims to assess the performance of the Weather Research and Forecasting model coupled with chemistry (WRF-Chem), the WRF coupled with Sulfur Transport dEposition Model (WRF-STEM), and Copernicus Atmosphere Monitoring Service (CAMS) model over Dibrugarh for the first time. The meteorological variables and air pollutants viz., black carbon(BC), carbon monoxide(CO), sulphur dioxide(SO2), Ozone(O3), and oxides of Nitrogen(NOx) obtained from WRF-Chem, WRF-STEM and CAMS are evaluated with observations. The source region tagged CO simulated by WRF-STEM delineate the regional contribution of CO. The principal source region of anthropogenic CO over Dibrugarh is North-Eastern India with a 59% contribution followed by that from China (17%), Indo-Gangetic Plains (14%), Bangladesh (6%), other parts of India (3%) and other regions (1%). Further, the BC-CO regression analysis is used to delineate the local emission sources. The BC-CO correlations estimated from models (0.99 for WRF-Chem, 0.96 for WRF-STEM, 0.89 for CAMS), and reanalysis (0.8 for Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA2) are maximum in pre-monsoon whereas surface observations show highest correlations (0.81) in winter. In pre-monsoon season, 90% of the modeled CO is due to biomass burning over Dibrugarh. Full article
(This article belongs to the Special Issue Numerical Weather Prediction Models in Atmospheric Dispersion)
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