Analysis of Black Carbon Concentrations in PM2.5-10 and PM2.5 Fractions by MABI Instrument in Two Urban Areas of Dakar, Senegal
Alassane Traore,
Moustapha Kebe,
Malick Sow,
Vasiliki Vasilatou,
Ababacar Sadikhe Ndao,
Konstantinos Eleftheriadis
Issue:
Volume 7, Issue 2, December 2023
Pages:
23-30
Received:
29 August 2023
Accepted:
19 September 2023
Published:
8 October 2023
Abstract: Black carbon (BC) is a particular pollutant that absorbs visible light and can intervene in the climatic change with irradiance. The sources of BC emissions are known, such as incomplete combustion of fossil fuels and biomass burning. Our study focuses on two sites Hlm and Yoff in Dakar, Senegal in order to determine the mass absorption coefficient of BC in our polycarbonate nucleopore filters from November 2018 to October 2019 so as to collect PM2.5 and PM2.5-10 we face in our two study sites using MABI instrument. In addition, we investigate the source apportionment of black carbon in PM2.5 fraction. We observe that the mass absorption coefficient of PM2.5 is higher than that of PM2.5-10. The average concentration of BC at Hlm and Yoff were 1.85 ± 0.37 and 2.69 ± 0.54 μg.m−3 respectively, whereas the average concentrations of BCBB were 0.003 ± 0.0007 and 0.08 ± 0.01 μg.m−3, respectively and for BCFF were 1.85 ± 0.37 and 2.61 ± 0.53μg.m−3. The BC from at Yoff has two compounds with 2.97% of Biomass burning and 97, 03% of Fossil fuels in contrast to Hlm site the black carbon was mainly composed of fossil fuels in Dakar, the fossil fuels are mainly source of the black carbon.
Abstract: Black carbon (BC) is a particular pollutant that absorbs visible light and can intervene in the climatic change with irradiance. The sources of BC emissions are known, such as incomplete combustion of fossil fuels and biomass burning. Our study focuses on two sites Hlm and Yoff in Dakar, Senegal in order to determine the mass absorption coefficient...
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Research Article
Köppen–Geiger Climate Classification in the Pannonian Basin According to SSP5-8.5 Scenario
Issue:
Volume 7, Issue 2, December 2023
Pages:
31-49
Received:
25 September 2023
Accepted:
13 October 2023
Published:
28 October 2023
Abstract: The Köppen–Geiger climate classification is used to determine climate types in region of Pannonian Basin with data from the sixth phase of the Coupled Model Intercomparison Project. The study covers a period from years 2021 until 2100, and it shows how certain climate types are changing in percentage in thirty-year averages for six periods. In the period 1960-1990 years of the last century, the dominant climate type was warm summer humid continental climate (Dfb) with 74% and 98% presences in the region according Kottek and Peel, respectively. The results show that the change of this climate type to the humid subtropical climate type (Cfa) began in the first half of the 21st century. The complete dominance of humid subtropical climate type in the most areas of the Pannonian Basin characterized the second half of the 21st century. Also, results show the creation of a warm summer Mediterranean climate type (Csa), which according to certain simulations, is present from 10% to 30% on average in the region. In the central part of the region, a cold desert climate type (Bsk) is formed with approximately 6% presences in the region. This creation of climate types in some parts of the region shows that in the second half of 21st century, drier and a warmer climate are expected.
Abstract: The Köppen–Geiger climate classification is used to determine climate types in region of Pannonian Basin with data from the sixth phase of the Coupled Model Intercomparison Project. The study covers a period from years 2021 until 2100, and it shows how certain climate types are changing in percentage in thirty-year averages for six periods. In the ...
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Research Article
Mapping of Noise Pollution and Greenhouse Gases from Coastal Protection Works in Grand-Lahou (Ivory Coast)
Jacques André Tiemele*,
Brou Roger Sylvestre Brou,
Eric Valère Djagoua
Issue:
Volume 7, Issue 2, December 2023
Pages:
50-54
Received:
24 November 2023
Accepted:
11 December 2023
Published:
26 December 2023
Abstract: To proposing measures to mitigate the impacts related to noise pollution and air quality resulting from work to protect the sandy coast of Grand-Lahou, research work was undertaken to assess the spatial impact of these pollution. To do this, several data from Grand-Lahou coastal sandy were used, such as the USGS Earth Explorer site (https://earthexplorer.usgs.gov/) and Earthdata, which are Landsat 8 OLI TIRS, Landsat 7 ETM and ASTER DEM images. As for the acquisition of wind speed data, they were acquired on the NOAA website https://fr.weatherspark.com. The digital processing of the data and the cartographic layout were carried out using the ARCGIS 10 software. “Buffer” application of ArcGis software will be used to map the spatial extent of noise pollution from the work zone. The spatial influence of gaseous emissions was defined by the wind rose and by the IDW spatial interpolation and ECN kriging methods. The results showed that in the opening zone of the future pass, noise pollution is between 73 and 79 dB(A) for an area of 82.08 m2 and 67 dB(A) for an area of 59.88 m2. Then that in the closure zone of the existing pass, buildings of 5248.80 m2 will suffer noise pollution of between 73 and 79 dB(A) and other residential areas will suffer noise pollution of 69 to 73 dB(A) over a surface area of 5996.96 m2. As for greenhouse gases, ECN quantities are low and vary between 10.64 and 193.19 in the opening zone of the new pass while in the closure quantities zone of the current pass, the village Ancien Lahou -Kpanda could be affected by gas and smoke discharges whose ECN values are estimated at more than 140, as for the carbon footprint evaluated at 2,796.27 tCO2eq.
Abstract: To proposing measures to mitigate the impacts related to noise pollution and air quality resulting from work to protect the sandy coast of Grand-Lahou, research work was undertaken to assess the spatial impact of these pollution. To do this, several data from Grand-Lahou coastal sandy were used, such as the USGS Earth Explorer site (https://earthex...
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