Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis
Abstract This paper investigates the characteristics and impact of a major Saharan dust storm during June 14th–19th 2020 on atmospheric radiative and thermodynamics properties over the Atlantic Ocean. The event witnessed the highest ever aerosol optical depth for June since 2002. The satellites and...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-10017-1 |
| _version_ | 1818274062833549312 |
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| author | A. Asutosh V. Vinoj Nuncio Murukesh Ramakrishna Ramisetty Nishant Mittal |
| author_facet | A. Asutosh V. Vinoj Nuncio Murukesh Ramakrishna Ramisetty Nishant Mittal |
| author_sort | A. Asutosh |
| collection | DOAJ |
| description | Abstract This paper investigates the characteristics and impact of a major Saharan dust storm during June 14th–19th 2020 on atmospheric radiative and thermodynamics properties over the Atlantic Ocean. The event witnessed the highest ever aerosol optical depth for June since 2002. The satellites and high-resolution model reanalysis products well captured the origin and spread of the dust storm. The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) measured total attenuated backscatter and aerosol subtype profiles, lower angstrom exponent values (~ 0.12) from Modern-Era Retrospective Analysis for Research and Application—version 2 (MERRA-2) and higher aerosol index value from Ozone monitoring instrument (> 4) tracked the presence of elevated dust. It was found that the dust AOD was as much as 250–300% higher than their climatology resulting in an atmospheric radiative forcing ~ 200% larger. As a result, elevated warming (8–16%) was observed, followed by a drop in relative humidity (2–4%) in the atmospheric column, as evidenced by both in-situ and satellite measurements. Quantifications such as these for extreme dust events provide significant insights that may help in understanding their climate effects, including improvements to dust simulations using chemistry-climate models. |
| first_indexed | 2024-12-12T22:07:53Z |
| format | Article |
| id | doaj.art-d117e56fbb3e422c913c6e826ea3fefc |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-12T22:07:53Z |
| publishDate | 2022-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-d117e56fbb3e422c913c6e826ea3fefc2022-12-22T00:10:19ZengNature PortfolioScientific Reports2045-23222022-04-0112111410.1038/s41598-022-10017-1Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysisA. Asutosh0V. Vinoj1Nuncio Murukesh2Ramakrishna Ramisetty3Nishant Mittal4School of Earth, Ocean and Climate Science, Indian Institute of Technology BhubaneswarSchool of Earth, Ocean and Climate Science, Indian Institute of Technology BhubaneswarNational Centre for Polar and Ocean Research (NCPOR), Ministry of Earth SciencesTSI Instruments India Private LimitedTSI Instruments India Private LimitedAbstract This paper investigates the characteristics and impact of a major Saharan dust storm during June 14th–19th 2020 on atmospheric radiative and thermodynamics properties over the Atlantic Ocean. The event witnessed the highest ever aerosol optical depth for June since 2002. The satellites and high-resolution model reanalysis products well captured the origin and spread of the dust storm. The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) measured total attenuated backscatter and aerosol subtype profiles, lower angstrom exponent values (~ 0.12) from Modern-Era Retrospective Analysis for Research and Application—version 2 (MERRA-2) and higher aerosol index value from Ozone monitoring instrument (> 4) tracked the presence of elevated dust. It was found that the dust AOD was as much as 250–300% higher than their climatology resulting in an atmospheric radiative forcing ~ 200% larger. As a result, elevated warming (8–16%) was observed, followed by a drop in relative humidity (2–4%) in the atmospheric column, as evidenced by both in-situ and satellite measurements. Quantifications such as these for extreme dust events provide significant insights that may help in understanding their climate effects, including improvements to dust simulations using chemistry-climate models.https://doi.org/10.1038/s41598-022-10017-1 |
| spellingShingle | A. Asutosh V. Vinoj Nuncio Murukesh Ramakrishna Ramisetty Nishant Mittal Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis Scientific Reports |
| title | Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis |
| title_full | Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis |
| title_fullStr | Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis |
| title_full_unstemmed | Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis |
| title_short | Investigation of June 2020 giant Saharan dust storm using remote sensing observations and model reanalysis |
| title_sort | investigation of june 2020 giant saharan dust storm using remote sensing observations and model reanalysis |
| url | https://doi.org/10.1038/s41598-022-10017-1 |
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