Application of WRF-CMAQ Model System for Analysis of Sulfur and Nitrogen Deposition over Bulgaria

Syrakov, Dimiter; Georgieva, Emilia; Prodanova, Maria; Hristova, Elena; Gospodinov, Ilian; Slavov, Kiril; Veleva, Blagorodka

doi:10.1007/978-3-030-10692-8_54

Cited by 5 publications

(4 citation statements)

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“…It is a successive correction interpolation scheme that minimizes the error caused by the interpolation of discrete points into grid points. It has been widely used in the objective analysis of various diagnostic analysis and numerical prediction schemes in the meteorological field [30][31][32]. A non-zero weighting function within a prescribed radius of influence is applied in this scheme, and the radius of influence decreases with each successive scan.…”

Section: The Spatial Interpolation Methods Of Aqi and Pm Concentrationsmentioning

confidence: 99%

Spatiotemporal Variations in Particulate Matter and Air Quality over China: National, Regional and Urban Scales

et al. 2020

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Ambient exposure to particulate matter (PM) air pollution is known to have an adverse effect on public health worldwide. Rapid increase rates of economic and urbanization, industrial development, and environmental change in China have exacerbated the occurrence of air pollution. This study examines the temporal and spatial distribution of PM on national, regional and local scales in China during 2014–2016. The relationships between the PM2.5 concentration rising rate (PMRR) and meteorological parameters (wind speed and wind direction) are discussed. The dataset of Air Quality Index (AQI), PM10 (PM diameter < 10 μm ) and PM2.5 (PM diameter < 2.5 μm) were collected in 169, 369, and 367 cities in 2014, 2015, and 2016 over China, respectively. The results show that the air quality has been generally improved on the national scale, but deteriorated locally in areas such as the Feiwei Plain. The northwest China (NW) and Beijing-Tianjin-Hebei (BTH) regions are the worst areas of PM pollution, which are mainly manifested by the excessive PM10 caused by blowing dust in spring in NW and the intensive emissions of PM2.5 in winter in BTH. With the classified seven geographic regions, we demonstrate the significant spatial difference and seasonal variation of PM concentration and PM2.5/PM10 ratio, which indicate different emission sources. Furthermore, the dynamic analysis of the PM2.5 pollution process in 11 large urban cities shows dramatic effects of wind speed and wind direction on the PM2.5 loadings.

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Section: The Spatial Interpolation Methods Of Aqi and Pm Concentrationsmentioning

confidence: 99%

Spatiotemporal Variations in Particulate Matter and Air Quality over China: National, Regional and Urban Scales

et al. 2020

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“…In previous studies, [25,29] it was shown that the PBA approach led to improvement of monthly wet depositions in Bulgaria when comparing the model to observed values at single sites. Sensitivity tests on the effect of PBA on monthly wet depositions in Bulgaria suggested a decrease in annual wet depositions by about 25-30%, [31]. In this work, the PBA correction is applied as post-processing to the gridded wet depositions on monthly and daily basis.…”

Section: Brief Overview Of Bgcwfs and Emep-ctmmentioning

confidence: 99%

“…In this work, the PBA correction is applied as post-processing to the gridded wet depositions on monthly and daily basis. The method requires gridded values for observed precipitation, [31]. The objective analysis of precipitation is a challenging task due to the heterogeneity in the spatial distribution.…”

Section: Brief Overview Of Bgcwfs and Emep-ctmmentioning

confidence: 99%

“…However, chemical analysis of wet and dry atmospheric samples was carried out only at a few locations during field experiments [28][29][30]. On the modeling aspect, it is worth noting that NIMH recently started the estimation of atmospheric deposition for the country based on its operationally running CTM-the Bulgarian Chemical Weather Forecasting system (BgCWFS) [25,29,31]. Another modeling system that performs simulations for air pollutants, acidification, and eutrophication compounds over Europe on a routine basis was developed at the EMEP Meteorological Synthesizing Centre-West, the EMEP-MSC-W model [32], further denoted as EMEP-CTM.…”

Section: Introductionmentioning

confidence: 99%

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Sulfur and Nitrogen Depositions in BULGARIA—Model Results and Observations

et al. 2022

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Atmospheric deposition processes are of primary importance for human health, forests, agricultural lands, aquatic bodies, and ecosystems. South-East Europe is still characterized by numerous hot spots of elevated sulfur deposition, despite the reduction in European emission sources. The purpose of this study is to discuss the results from two chemical transport models and observations for wet and dry depositions of sulfur (S), reduced nitrogen (RDN) and oxidized nitrogen (OXN) in Bulgaria in 2016–2017. The spatial distribution and the domain main deposition values by EMEP MSC-W (model of the MSC-W Centre of the Co-operative Programme for Monitoring and Evaluation of the Long-range Transmissions of Air Pollutants in Europe) and BgCWFS (Bulgarian Chemical Weather Forecast System) demonstrated S wet depositions to be higher than N depositions, and identified a rural area in south-east Bulgaria as a possible hot-spot. The chemical analysis of deposition samples at three sites showed a prevalence of sulfate in the western part of the country, and prevalence of Cl and Na at a coastal site. The comparison between modeled and observed depositions demonstrated that both models captured the prevalence of S wet depositions at all sites. Better performance of BgCWFS with an average absolute value of the normalized mean bias of 16% was found.

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Modelling of the Seasonal Sulphur and Nitrogen Depositions over the Balkan Peninsula by CMAQ and EMEP-MSC-W

Gadzhev

Ivanov

2021

Studies in Systems, Decision and Control

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Application of WRF-CMAQ Model System for Analysis of Sulfur and Nitrogen Deposition over Bulgaria

Cited by 5 publications

References 11 publications

Spatiotemporal Variations in Particulate Matter and Air Quality over China: National, Regional and Urban Scales

Spatiotemporal Variations in Particulate Matter and Air Quality over China: National, Regional and Urban Scales

Sulfur and Nitrogen Depositions in BULGARIA—Model Results and Observations

Modelling of the Seasonal Sulphur and Nitrogen Depositions over the Balkan Peninsula by CMAQ and EMEP-MSC-W

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