Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2021.105803 |
Spatial and temporal variation of aerosol optical depths over six major cities in Bangladesh | |
Shahid Uz Zaman, Md. Riad Sarkar Pavel, Khaled Shaifullah Joy, Farah Jeba, ... Abdus Salam | |
2021-08-08 | |
发表期刊 | Atmospheric Research
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出版年 | 2021 |
英文摘要 | The Aerosol Optical Depth (AOD) is a crucial parameter for assessing aerosol content and determining the level of air pollution. In this study, we represent almost seven years' aerosol optical behavioral patterns of six major cities in Bangladesh with emphasis on trends, seasonal variations, sources characterization, comparison between ground (AERONET) and satellite (MODIS Terra and Aqua) measurements, and relation with particulate matter (PM). High AOD values (>0.70) were obtained in most of the western parts of the country in all seasons. Decreasing patterns were observed from northwest to southeast. Average values of AOD for Dhaka, Chattagram, Rajshahi, Khulna, Barishal, and Sylhet were 0.71 ± 0.08, 0.50 ± 0.08, 0.78 ± 0.06, 0.72 ± 0.14, 0.64 ± 0.08, 0.60 ± 0.07 (Terra), and 0.59 ± 0.07, 0.48 ± 0.05, 0.69 ± 0.08, 0.64 ± 0.12, 0.56 ± 0.05, 0.56 ± 0.07 (Aqua), respectively. AERONET AODs at 870, 500, and 340 nm, and Ångström Exponent (AE440–870) values for Dhaka city were 0.40, 0.78, 1.06, and 1.18, respectively. Mean Absolute Error (MAE), Root Mean Square Error (RMSE), and Correlation coefficient (r) values were 0.23, 0.30, 0.64 (Terra) and 0.12, 0.29, 0.76 (Aqua), respectively. Both PM2.5 and PM10 were well correlated with all AODs but weakly correlated with AE. AODs, AE, and PM were negatively associated with meteorological variables such as rainfall, relative humidity, wind speed, and temperature. Anthropogenic and biomass burning aerosols were dominated in all four seasons, but dust and mixed type aerosols were only dominated in pre-monsoon and monsoon seasons. This research would help researchers further know the nature of atmospheric aerosols and how they affect seasonal patterns. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335303 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Shahid Uz Zaman, Md. Riad Sarkar Pavel, Khaled Shaifullah Joy, Farah Jeba, ... Abdus Salam. Spatial and temporal variation of aerosol optical depths over six major cities in Bangladesh[J]. Atmospheric Research,2021. |
APA | Shahid Uz Zaman, Md. Riad Sarkar Pavel, Khaled Shaifullah Joy, Farah Jeba, ... Abdus Salam.(2021).Spatial and temporal variation of aerosol optical depths over six major cities in Bangladesh.Atmospheric Research. |
MLA | Shahid Uz Zaman, Md. Riad Sarkar Pavel, Khaled Shaifullah Joy, Farah Jeba, ... Abdus Salam."Spatial and temporal variation of aerosol optical depths over six major cities in Bangladesh".Atmospheric Research (2021). |
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