TY - JOUR ID - 85055 TI - Daily and Seasonal Variation of Aerosol Optical Depth and Angstrom Exponent over Ethiopia using MODIS Data JO - Pollution JA - POLL LA - en SN - 2383-451X AU - Eshet, Asmarech AU - Raju, Jaya Prakash AD - Department of Physics, College of Science, Bahir Dar University, P.O.Box 79, Bahir Dar, Ethiopia Y1 - 2022 PY - 2022 VL - 8 IS - 1 SP - 315 EP - 329 KW - MODIS KW - Aerosol Optical Depth KW - Angstrom exponent DO - 10.22059/poll.2021.316010.971 N2 - Aerosols are tiny particles (liquid or solid) suspended in the atmosphere. They play a significant rolein climate dynamics directly or indirectly. Aerosol Optical Depth (AOD) and Angstrom Exponent(AE) are significant parameters to study the concentration and size or type of aerosol over an area,respectively. In this article, we utilized three years of AOD and AE parameters derived from moderateresolution imaging spectroradiometer (MODIS) satellite during the period January, 2013 to December,2015 over Ethiopia. In order to study the spatiotemporal pattern of aerosols, we choose three areas(Debretabour, Gojjam and Addis Ababa) over Ethiopian highlands, which are representative of nonindustrial, agricultural and industrial areas respectively. Further we compare continental aerosols withmarine aerosols from Djibouti. Our results clearly depicts the aerosol distribution over Ethiopia ishighly variable spatially and temporally. The results indicates that the urban and biomass aerosols aredominate over Addis Ababa, and Gojjam respectively, whereas dust and biomass aerosols are presentover Debretabour, while Djibouti is loaded by sea spray aerosols. The seasonal variability of AOD isfound to be maximum during the kiremt (summer) and minimum during bega (winter) over all areas(continental and marine). UR - https://jpoll.ut.ac.ir/article_85055.html L1 - https://jpoll.ut.ac.ir/article_85055_f761a1815f6b4dd7eb5ee7998d42bc5a.pdf ER -