2015
DOI: 10.1038/ngeo2353
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Aerosol forcing of the position of the intertropical convergence zone since ad 1550

Abstract: Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permi… Show more

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Cited by 132 publications
(178 citation statements)
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References 28 publications
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“…Still, our observation relating clusters of large volcanic eruptions to prolonged decreased Mesoamerican precipitation should expand the emerging discussion fostered by indications from global climate models regarding the strong sensitivity of the world's other monsoons to external forcing 41,42 . Our results, in combination with studies of global stream flows after large volcanic eruptions 43 , imply that certain tropical hydroclimates may be highly sensitive to volcanic forcing and, more generally, to large stratospheric aerosols loading 24 . Global climate models have become increasingly important to our physical understanding of such 'global forcing to regional response' connections.…”
Section: Discussionsupporting
confidence: 57%
See 1 more Smart Citation
“…Still, our observation relating clusters of large volcanic eruptions to prolonged decreased Mesoamerican precipitation should expand the emerging discussion fostered by indications from global climate models regarding the strong sensitivity of the world's other monsoons to external forcing 41,42 . Our results, in combination with studies of global stream flows after large volcanic eruptions 43 , imply that certain tropical hydroclimates may be highly sensitive to volcanic forcing and, more generally, to large stratospheric aerosols loading 24 . Global climate models have become increasingly important to our physical understanding of such 'global forcing to regional response' connections.…”
Section: Discussionsupporting
confidence: 57%
“…Aerosols are a known critical part of the overall anthropogenic as well as natural forcing of climate (the latter associated with aeolian dust and volcanic eruptions) [20][21][22] . We thus surmise that the decadal drying trends in the early and late decades of the nineteenth century and during the second half of the twentieth century are largely a consequence of the clustered volcanic forcing, with the most recent period superposed on longterm anthropogenic drying 23,24 . Periods of strong volcanic activity during the past millennium also often coincide with periods of anomalous solar activity.…”
Section: Resultsmentioning
confidence: 80%
“…The feedback may have resided entirely in the North Atlantic and involved sea ice expansion, AMOC weakening, and increased albedo, as previously suggested within the context of meltwater forcing (Broecker et al, 2010). Alternatively, it has been noted that hemispherically asymmetrical volcanic sulfate loadings induced ITCZ migration away from the hemisphere of the eruption (Ridley et al, 2015;Hwang et al, 2013;Colose et al, 2016), and it is possible that these ITCZ shifts forced wholesale shifts in atmospheric circulation cells. This hypothesised mechanism is broadly consistent with that advanced by Chiang et al (2014), where a forcing at a high northerly latitude subsequently drives southward ITCZ migration, which then affects global atmospheric circulation.…”
Section: The Nature Of the Positive Feedbackmentioning
confidence: 81%
“…The feedback may have resided entirely in the North Atlantic, and involved sea ice expansion, AMOC weakening, and increased albedo, as previously suggested within the context of meltwater forcing (Broecker et al, 2010). Alternatively, hemispherically asymmetrical volcanic sulphate loadings may have induced ITCZ 185 migration away from the hemisphere of the eruption (Ridley et al, 2015;Hwang et al, 2013), and these ITCZ shifts may have forced wholesale shifts in atmospheric circulation cells. Within the context of GS-1, LSE-related NH cooling could have shifted the ITCZ to the south, thereby expanding the NH Polar Cell and shifting the NH Polar Front to the south.…”
Section: The Nature Of the Positive Feedbackmentioning
confidence: 99%