Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification
Abstract Atmospheric aerosol characterization experiments were conducted, for the first time, over AC-Ahmednagar, a semi-urban location in south-west India, using a multi-spectral solar radiometer from January 2016 to May 2018. The MODIS/Terra retrieved Level-2 daily swath AOD550 nm data sets during...
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| Format: | Article |
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Springer
2022-08-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.220104 |
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| author | Amol R. Kolhe Gajanan Raghunath Aher Pawan S. Soyam Sachin D. Ralegankar Sumita Kedia Laxman M. Chaudhari Vivek V. Antad Sachin D. Ghude Pramod D. Safai Sanjay D. Chakane Panuganti C. S. Devara |
| author_facet | Amol R. Kolhe Gajanan Raghunath Aher Pawan S. Soyam Sachin D. Ralegankar Sumita Kedia Laxman M. Chaudhari Vivek V. Antad Sachin D. Ghude Pramod D. Safai Sanjay D. Chakane Panuganti C. S. Devara |
| author_sort | Amol R. Kolhe |
| collection | DOAJ |
| description | Abstract Atmospheric aerosol characterization experiments were conducted, for the first time, over AC-Ahmednagar, a semi-urban location in south-west India, using a multi-spectral solar radiometer from January 2016 to May 2018. The MODIS/Terra retrieved Level-2 daily swath AOD550 nm data sets during 2011–2021 were also used to infer long-term behaviour of columnar aerosols at AC-Ahmednagar. The daily-averaged, Microtops II Sun photometer measured AOD500 nm and AOD1020 nm and MODIS retrieved AOD550 nm reveal a discernible wide spectrum of variability in their magnitudes. Magnitude-wise, AODs at both the wavelengths depict an increasing trend of about 0.05 year−1 (AOD500 nm) and 0.03 year−1 (AOD1020 nm). However, MODIS AOD550 nm illustrates statistically insignificant increasing trend of about 0.007 year−1. Microtops II Sun photometer derived Angstrom exponent (AE) depicts a noticeable day-to-day variability with respect to its overall mean value (1.06 ± 0.30) indicating the presence of diverse-sized aerosols. The AOD500 nm against AE440-870 nm contour density map analysis qualitatively characterizes different aerosol types prevalent in the atmospheric column. The weighted PSCF (WPSCF) analysis for AOD performed on a seasonal basis reveals the presence of possible contribution of long-range transported plumes of varied aerosols on different scales and types from a variety of emission sources from different regions. |
| format | Article |
| id | doaj-art-1665993728244a519445dd3e6541c972 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2022-08-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-1665993728244a519445dd3e6541c9722025-02-09T12:18:13ZengSpringerAerosol and Air Quality Research1680-85842071-14092022-08-01221011810.4209/aaqr.220104Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source IdentificationAmol R. Kolhe0Gajanan Raghunath Aher1Pawan S. Soyam2Sachin D. Ralegankar3Sumita Kedia4Laxman M. Chaudhari5Vivek V. Antad6Sachin D. Ghude7Pramod D. Safai8Sanjay D. Chakane9Panuganti C. S. Devara10Department of Physics, Arts, Science and Commerce CollegeDepartment of Physics, Nowrosjee Wadia CollegeDepartment of Environmental Sciences, Savitribai Phule Pune UniversityDepartment of Physics, Ahmednagar CollegeCenter for Development of Advanced ComputingDepartment of Physics, Nowrosjee Wadia CollegeDepartment of Physics, Nowrosjee Wadia CollegeIndian Institute of Tropical MeteorologyIndian Institute of Tropical MeteorologyDepartment of Physics, Arts, Science and Commerce CollegeAmity Centre for Ocean-Atmospheric Science and Technology, Amity UniversityAbstract Atmospheric aerosol characterization experiments were conducted, for the first time, over AC-Ahmednagar, a semi-urban location in south-west India, using a multi-spectral solar radiometer from January 2016 to May 2018. The MODIS/Terra retrieved Level-2 daily swath AOD550 nm data sets during 2011–2021 were also used to infer long-term behaviour of columnar aerosols at AC-Ahmednagar. The daily-averaged, Microtops II Sun photometer measured AOD500 nm and AOD1020 nm and MODIS retrieved AOD550 nm reveal a discernible wide spectrum of variability in their magnitudes. Magnitude-wise, AODs at both the wavelengths depict an increasing trend of about 0.05 year−1 (AOD500 nm) and 0.03 year−1 (AOD1020 nm). However, MODIS AOD550 nm illustrates statistically insignificant increasing trend of about 0.007 year−1. Microtops II Sun photometer derived Angstrom exponent (AE) depicts a noticeable day-to-day variability with respect to its overall mean value (1.06 ± 0.30) indicating the presence of diverse-sized aerosols. The AOD500 nm against AE440-870 nm contour density map analysis qualitatively characterizes different aerosol types prevalent in the atmospheric column. The weighted PSCF (WPSCF) analysis for AOD performed on a seasonal basis reveals the presence of possible contribution of long-range transported plumes of varied aerosols on different scales and types from a variety of emission sources from different regions.https://doi.org/10.4209/aaqr.220104Aerosol optical depthÅngström exponentMODISFine-mode aerosolsCoarse-mode aerosolsCoagulation |
| spellingShingle | Amol R. Kolhe Gajanan Raghunath Aher Pawan S. Soyam Sachin D. Ralegankar Sumita Kedia Laxman M. Chaudhari Vivek V. Antad Sachin D. Ghude Pramod D. Safai Sanjay D. Chakane Panuganti C. S. Devara Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification Aerosol and Air Quality Research Aerosol optical depth Ångström exponent MODIS Fine-mode aerosols Coarse-mode aerosols Coagulation |
| title | Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification |
| title_full | Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification |
| title_fullStr | Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification |
| title_full_unstemmed | Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification |
| title_short | Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification |
| title_sort | aerosol opto physical properties temporal variation aerosol type discrimination and source identification |
| topic | Aerosol optical depth Ångström exponent MODIS Fine-mode aerosols Coarse-mode aerosols Coagulation |
| url | https://doi.org/10.4209/aaqr.220104 |
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