This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1038/s41598-021-81566-0 in citations.
Please use the identifier: http://hdl.handle.net/2128/27257 in citations.
The role of tropical volcanic eruptions in exacerbating Indian droughts
The role of tropical volcanic eruptions in exacerbating Indian droughts
The Indian summer monsoon rainfall (ISMR) is vital for the livelihood of millions of people in the Indianregion; droughts caused by monsoon failures often resulted in famines. Large volcanic eruptions havebeen linked with reductions in ISMR, but the responsible mechanisms remain unclear. Here, using...
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Personal Name(s): | Fadnavis, Suvarna (Corresponding author) |
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Müller, Rolf / Chakraborty, Tanusri / Sabin, T. P. / Laakso, Anton / Rap, Alexandru / Griessbach, Sabine / Vernier, Jean-Paul / Tilmes, Simone | |
Contributing Institute: |
Jülich Supercomputing Center; JSC Stratosphäre; IEK-7 |
Published in: | Scientific reports, 11 (2021) 1, S. 2714 |
Imprint: |
[London]
Macmillan Publishers Limited, part of Springer Nature
2021
|
DOI: |
10.1038/s41598-021-81566-0 |
Document Type: |
Journal Article |
Research Program: |
Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups Die Atmosphäre im globalen Wandel |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27257 in citations.
The Indian summer monsoon rainfall (ISMR) is vital for the livelihood of millions of people in the Indianregion; droughts caused by monsoon failures often resulted in famines. Large volcanic eruptions havebeen linked with reductions in ISMR, but the responsible mechanisms remain unclear. Here, using145-year (1871–2016) records of volcanic eruptions and ISMR, we show that ISMR deficits prevailfor two years after moderate and large (VEI > 3) tropical volcanic eruptions; this is not the case forextra-tropical eruptions. Moreover, tropical volcanic eruptions strengthen El Niño and weaken La Niñaconditions, further enhancing Indian droughts. Using climate-model simulations of the 2011 Nabrovolcanic eruption, we show that eruption induced an El Niño like warming in the central Pacific for twoconsecutive years due to Kelvin wave dissipation triggered by the eruption. This El Niño like warmingin the central Pacific led to a precipitation reduction in the Indian region. In addition, solar dimmingcaused by the volcanic plume in 2011 reduced Indian rainfall. |