Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021
Abstract Aerosols play an important role in the earth’s environment across the globe through their involvement in various earth system cycles. The change in the aerosol properties may cause short and long-term impacts, the knowledge of such changes is useful in the estimation of the pollution source...
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| Format: | Article |
| Language: | English |
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Springer
2023-03-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.220320 |
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| author | Akshansha Chauhan Shukla Acharjee Ramesh P. Singh Brent Holben |
| author_facet | Akshansha Chauhan Shukla Acharjee Ramesh P. Singh Brent Holben |
| author_sort | Akshansha Chauhan |
| collection | DOAJ |
| description | Abstract Aerosols play an important role in the earth’s environment across the globe through their involvement in various earth system cycles. The change in the aerosol properties may cause short and long-term impacts, the knowledge of such changes is useful in the estimation of the pollution sources of any region. We have carried out the analysis of the aerosols’ optical and radiative properties using AERONET station data from 2018 to 2021 in Dibrugarh City. The higher Aerosol Optical Depth (AOD) values during winter and pre-monsoon months indicate high anthropogenic activities, and biomass burning in Dibrugarh. The impact of various sources and daily meteorological parameters help in understanding the diurnal variations of the AOD, Ångström Exponent (AE), and column water (CW). Fine aerosol fractions dominate the aerosol volume, but sometimes the long-range transport of dust affects aerosol properties during pre-monsoon months (MAM). MODIS-derived AOD and AERONET AOD values show a good correlation, with R2 = 0.68. The highest volume of the aerosols reaches up to 0.11 µm3 µm−2 during pre-monsoon months, whereas it lies below 0.05 µm3 µm−2 in other seasons. SSA values indicate the presence of scattering aerosols but in 2020, a sudden decline in the SSA values shows a strong rise in the absorbing aerosols. Throughout the study period (2018–2021), the positive radiative forcing indicates a rise in atmospheric heating. |
| format | Article |
| id | doaj-art-000ab8853a5d49e69b170f569c566126 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2023-03-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-000ab8853a5d49e69b170f569c5661262025-02-09T12:22:05ZengSpringerAerosol and Air Quality Research1680-85842071-14092023-03-0123612210.4209/aaqr.220320Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021Akshansha Chauhan0Shukla Acharjee1Ramesh P. Singh2Brent Holben3Center for Space and Remote Sensing Research, National Central UniversityDibrugarh UniversitySchool of Life and Environmental Sciences, Chapman UniversityNASA Goddard Space Flight CenterAbstract Aerosols play an important role in the earth’s environment across the globe through their involvement in various earth system cycles. The change in the aerosol properties may cause short and long-term impacts, the knowledge of such changes is useful in the estimation of the pollution sources of any region. We have carried out the analysis of the aerosols’ optical and radiative properties using AERONET station data from 2018 to 2021 in Dibrugarh City. The higher Aerosol Optical Depth (AOD) values during winter and pre-monsoon months indicate high anthropogenic activities, and biomass burning in Dibrugarh. The impact of various sources and daily meteorological parameters help in understanding the diurnal variations of the AOD, Ångström Exponent (AE), and column water (CW). Fine aerosol fractions dominate the aerosol volume, but sometimes the long-range transport of dust affects aerosol properties during pre-monsoon months (MAM). MODIS-derived AOD and AERONET AOD values show a good correlation, with R2 = 0.68. The highest volume of the aerosols reaches up to 0.11 µm3 µm−2 during pre-monsoon months, whereas it lies below 0.05 µm3 µm−2 in other seasons. SSA values indicate the presence of scattering aerosols but in 2020, a sudden decline in the SSA values shows a strong rise in the absorbing aerosols. Throughout the study period (2018–2021), the positive radiative forcing indicates a rise in atmospheric heating.https://doi.org/10.4209/aaqr.220320DibrugarhAERONETAerosols Optical DepthÅngström Exponent |
| spellingShingle | Akshansha Chauhan Shukla Acharjee Ramesh P. Singh Brent Holben Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021 Aerosol and Air Quality Research Dibrugarh AERONET Aerosols Optical Depth Ångström Exponent |
| title | Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021 |
| title_full | Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021 |
| title_fullStr | Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021 |
| title_full_unstemmed | Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021 |
| title_short | Dynamic Characteristics of Aerosol Optical Properties over Dibrugarh City in the North-Eastern Indian Region during 2018–2021 |
| title_sort | dynamic characteristics of aerosol optical properties over dibrugarh city in the north eastern indian region during 2018 2021 |
| topic | Dibrugarh AERONET Aerosols Optical Depth Ångström Exponent |
| url | https://doi.org/10.4209/aaqr.220320 |
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