Articles | Volume 14, issue 6
https://doi.org/10.5194/cp-14-811-2018
https://doi.org/10.5194/cp-14-811-2018
Research article
 | 
18 Jun 2018
Research article |  | 18 Jun 2018

Assessing the impact of large volcanic eruptions of the last millennium (850–1850 CE) on Australian rainfall regimes

Stephanie A. P. Blake, Sophie C. Lewis, Allegra N. LeGrande, and Ron L. Miller

Data sets

CMIP5 Coupled Model Intercomparison Project PCMDI https://cmip.llnl.gov/cmip5/data_portal.html

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Short summary
We studied the impact of the six largest tropical eruptions in reference to Australian precipitation, the Indian Ocean Dipole (IOD), and El Niño–Southern Oscillation (ENSO). Volcanic forcing increased the likelihood of El Niños and positive IODs (pIOD) and caused positive rainfall anomalies over north-west (NW) and south-east (SE) Australia. Larger sulfate loading caused more persistent pIOD and El Niños, enhanced precipitation over NW Australia, and dampened precipitation over SE Australia.