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Accueil du site → Master → Arabie Saoudite → MODELLING THE EFFECTS OF CLIMATE CHANGE ON AIR QUALITY IN THE DAMMAM METROPOLITAN AREA, SAUDI ARABIA , USING AERMOD COUPLED WITH STATION AND MESOSCALE WEATHER DATA

King Fahd University of Petroleum and Minerals. (KFUPM) 2022

MODELLING THE EFFECTS OF CLIMATE CHANGE ON AIR QUALITY IN THE DAMMAM METROPOLITAN AREA, SAUDI ARABIA , USING AERMOD COUPLED WITH STATION AND MESOSCALE WEATHER DATA

BABATUNDE MUSTAPHA

Titre : MODELLING THE EFFECTS OF CLIMATE CHANGE ON AIR QUALITY IN THE DAMMAM METROPOLITAN AREA, SAUDI ARABIA , USING AERMOD COUPLED WITH STATION AND MESOSCALE WEATHER DATA

Auteur : BABATUNDE MUSTAPHA

Université de soutenance : King Fahd University of Petroleum and Minerals. (KFUPM)

Grade : Master of Science (2022)

Résumé
Air dispersion (AD) models such as AERMOD are important tools for estimating the environmental impacts of air pollutant emissions into the atmosphere from anthropogenic sources. The outcome of these models is significantly linked to the climate conditions such as air temperatures and wind speeds, which are expected to differ in the future due to the global warming phenomenon. With projections from scientific sources of impending changes to the future climate of Saudi Arabia, especially temperature rise, there is a potential direct impact on the dispersion patterns of air pollutants results from AD models. To our knowledge, no similar studies were carried out in Saudi Arabia to investigate such impact. Therefore, this research investigates the effects of climate change on air quality in the Dammam Metropolitan area, Saudi Arabia, using AERMOD coupled with Station and Mesoscale Weather data using Sulphur dioxide (SO 2 )– as a model air pollutant.The research uses AERMOD model to predict the SO 2 dispersion trends on the surrounding area. Emissions from five (5) industrial stacks, on twenty-eight (28) receptors in the study area were considered for the climate period (2010- 2019) and future period of mid-century (2040-2060) under different scenarios of elevated temperature profiles (+1 o C, + 3 o C and + 5 o C) and wind speed (+0.6 m/s, +1.2 m/s and +1.8m/s) across averaging time periods of 1hr, 4hr and 8hr.Results showed that levels of SO 2 at the receiving sites under current and simulated future climactic condition fall within the allowable limit of WHO and KSA air quality standards. Results also revealed that the projected rise in temperature would only have mild increment on the SO 2 concentration levels while change in wind speed will have more significant impacts. The average increase of SO 2 levels were 0.04%, 0.14%, and 0.23% due to the temperature increase of 1, 3, and 5 degrees respectively while the levels reduced by 10.9%, 15.16% and 18.13% when wind speed increased by 0.6m/s, 1.2m/s and 1.8m/s respectively. This indicates that the changes in wind speed had far more significant effects on air pollutant concentration compared to air temperature. In conclusion, outcome of this work elucidates the degree of the effects of global warming and climate changes phenomena on air quality and can help the policy makers in their decision-making, given the significant health challenges associated with ambient air pollution in Saudi Arabia.

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Page publiée le 17 mars 2022