Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification
Abstract A growing body of research has underscored the radiative impact of mineral dust in influencing Indian summer monsoon rainfall variability. However, the various aerosol‐cloud‐precipitation interaction mechanisms remain poorly understood. Here we analyze multisatellite observations to examine...
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| Format: | Article |
| Language: | English |
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Wiley
2019-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2018GL081634 |
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| author | Piyushkumar N. Patel Ritesh Gautam Takuro Michibata Harish Gadhavi |
| author_facet | Piyushkumar N. Patel Ritesh Gautam Takuro Michibata Harish Gadhavi |
| author_sort | Piyushkumar N. Patel |
| collection | DOAJ |
| description | Abstract A growing body of research has underscored the radiative impact of mineral dust in influencing Indian summer monsoon rainfall variability. However, the various aerosol‐cloud‐precipitation interaction mechanisms remain poorly understood. Here we analyze multisatellite observations to examine dust‐induced modification in ice clouds and precipitation susceptibility. We show contrasting dust‐induced changes in ice cloud regimes wherein despite a 25% reduction in ice particle radius in thin ice clouds, we find ~40% increase in ice particle radius and ice water path in thick ice clouds resulting in the cloud deepening and subsequently strengthened precipitation susceptibility, under strong updraft regimes. The observed dust‐ice cloud‐precipitation interactions are supported by a strong correlation between the interannual monsoon rainfall variability and dust frequency. This microphysical‐dynamical coupling appears to provide negative feedback to aerosol‐cloud interactions, which acts to buffer enhanced aerosol wet scavenging. Our results underscore the importance of incorporating meteorological regime‐dependent dust‐ice cloud‐precipitation interactions in climate simulations. |
| format | Article |
| id | doaj-art-21b6537eb799418c99cc1e4f0722bfee |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-21b6537eb799418c99cc1e4f0722bfee2025-08-20T02:09:04ZengWileyGeophysical Research Letters0094-82761944-80072019-07-0146148431844110.1029/2018GL081634Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud ModificationPiyushkumar N. Patel0Ritesh Gautam1Takuro Michibata2Harish Gadhavi3Space & Atmospheric Sciences Division Physical Research Laboratory Ahmedabad IndiaEnvironmental Defense Fund Washington DC USAResearch Institute for Applied Mechanics Kyushu University Fukuoka JapanSpace & Atmospheric Sciences Division Physical Research Laboratory Ahmedabad IndiaAbstract A growing body of research has underscored the radiative impact of mineral dust in influencing Indian summer monsoon rainfall variability. However, the various aerosol‐cloud‐precipitation interaction mechanisms remain poorly understood. Here we analyze multisatellite observations to examine dust‐induced modification in ice clouds and precipitation susceptibility. We show contrasting dust‐induced changes in ice cloud regimes wherein despite a 25% reduction in ice particle radius in thin ice clouds, we find ~40% increase in ice particle radius and ice water path in thick ice clouds resulting in the cloud deepening and subsequently strengthened precipitation susceptibility, under strong updraft regimes. The observed dust‐ice cloud‐precipitation interactions are supported by a strong correlation between the interannual monsoon rainfall variability and dust frequency. This microphysical‐dynamical coupling appears to provide negative feedback to aerosol‐cloud interactions, which acts to buffer enhanced aerosol wet scavenging. Our results underscore the importance of incorporating meteorological regime‐dependent dust‐ice cloud‐precipitation interactions in climate simulations.https://doi.org/10.1029/2018GL081634aerosol‐cloud‐precipitation interactionssatellite remote sensingcloud invigorationdust‐ice cloud interactionsdynamical feedbackIndian Monsoon |
| spellingShingle | Piyushkumar N. Patel Ritesh Gautam Takuro Michibata Harish Gadhavi Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification Geophysical Research Letters aerosol‐cloud‐precipitation interactions satellite remote sensing cloud invigoration dust‐ice cloud interactions dynamical feedback Indian Monsoon |
| title | Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification |
| title_full | Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification |
| title_fullStr | Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification |
| title_full_unstemmed | Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification |
| title_short | Strengthened Indian Summer Monsoon Precipitation Susceptibility Linked to Dust‐Induced Ice Cloud Modification |
| title_sort | strengthened indian summer monsoon precipitation susceptibility linked to dust induced ice cloud modification |
| topic | aerosol‐cloud‐precipitation interactions satellite remote sensing cloud invigoration dust‐ice cloud interactions dynamical feedback Indian Monsoon |
| url | https://doi.org/10.1029/2018GL081634 |
| work_keys_str_mv | AT piyushkumarnpatel strengthenedindiansummermonsoonprecipitationsusceptibilitylinkedtodustinducedicecloudmodification AT riteshgautam strengthenedindiansummermonsoonprecipitationsusceptibilitylinkedtodustinducedicecloudmodification AT takuromichibata strengthenedindiansummermonsoonprecipitationsusceptibilitylinkedtodustinducedicecloudmodification AT harishgadhavi strengthenedindiansummermonsoonprecipitationsusceptibilitylinkedtodustinducedicecloudmodification |