High sensitivity of Indian summer monsoon to Middle East dust absorptive properties
The absorptive properties of dust aerosols largely determine the magnitude of their radiative impacts on the climate system. Currently, climate models use globally constant values of dust imaginary refractive index (IRI), a parameter describing the dust absorption efficiency of solar radiation, alth...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Nature Publishing Group
2017
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| Online Access: | http://hdl.handle.net/1721.1/106980 |
| _version_ | 1826212209223532544 |
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| author | Jin, Qinjian Yang, Zong-Liang Wei, Jiangfeng |
| author2 | Massachusetts Institute of Technology. Center for Global Change Science |
| author_facet | Massachusetts Institute of Technology. Center for Global Change Science Jin, Qinjian Yang, Zong-Liang Wei, Jiangfeng |
| author_sort | Jin, Qinjian |
| collection | MIT |
| description | The absorptive properties of dust aerosols largely determine the magnitude of their radiative impacts on the climate system. Currently, climate models use globally constant values of dust imaginary refractive index (IRI), a parameter describing the dust absorption efficiency of solar radiation, although it is highly variable. Here we show with model experiments that the dust-induced Indian summer monsoon (ISM) rainfall differences (with dust minus without dust) change from −9% to 23% of long-term climatology as the dust IRI is changed from zero to the highest values used in the current literature. A comparison of the model results with surface observations, satellite retrievals, and reanalysis data sets indicates that the dust IRI values used in most current climate models are too low, tending to significantly underestimate dust radiative impacts on the ISM system. This study highlights the necessity for developing a parameterization of dust IRI for climate studies. |
| first_indexed | 2024-09-23T15:17:45Z |
| format | Article |
| id | mit-1721.1/106980 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:17:45Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1069802022-10-02T02:00:32Z High sensitivity of Indian summer monsoon to Middle East dust absorptive properties Jin, Qinjian Yang, Zong-Liang Wei, Jiangfeng Massachusetts Institute of Technology. Center for Global Change Science Jin, Qinjian The absorptive properties of dust aerosols largely determine the magnitude of their radiative impacts on the climate system. Currently, climate models use globally constant values of dust imaginary refractive index (IRI), a parameter describing the dust absorption efficiency of solar radiation, although it is highly variable. Here we show with model experiments that the dust-induced Indian summer monsoon (ISM) rainfall differences (with dust minus without dust) change from −9% to 23% of long-term climatology as the dust IRI is changed from zero to the highest values used in the current literature. A comparison of the model results with surface observations, satellite retrievals, and reanalysis data sets indicates that the dust IRI values used in most current climate models are too low, tending to significantly underestimate dust radiative impacts on the ISM system. This study highlights the necessity for developing a parameterization of dust IRI for climate studies. King Abdullah University of Science and Technology University of Texas at Austin. Jackson School of Geosciences 2017-02-16T20:54:05Z 2017-02-16T20:54:05Z 2016-07 2015-12 Article http://purl.org/eprint/type/JournalArticle 2045-2322 http://hdl.handle.net/1721.1/106980 Jin, Qinjian, Zong-Liang Yang, and Jiangfeng Wei. “High Sensitivity of Indian Summer Monsoon to Middle East Dust Absorptive Properties.” Scientific Reports 6 (2016): 30690. en_US http://dx.doi.org/10.1038/srep30690 Scientific Reports Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | Jin, Qinjian Yang, Zong-Liang Wei, Jiangfeng High sensitivity of Indian summer monsoon to Middle East dust absorptive properties |
| title | High sensitivity of Indian summer monsoon to Middle East dust absorptive properties |
| title_full | High sensitivity of Indian summer monsoon to Middle East dust absorptive properties |
| title_fullStr | High sensitivity of Indian summer monsoon to Middle East dust absorptive properties |
| title_full_unstemmed | High sensitivity of Indian summer monsoon to Middle East dust absorptive properties |
| title_short | High sensitivity of Indian summer monsoon to Middle East dust absorptive properties |
| title_sort | high sensitivity of indian summer monsoon to middle east dust absorptive properties |
| url | http://hdl.handle.net/1721.1/106980 |
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