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dc.contributor.authorZorzi, C.
dc.contributor.authorDesprat, S.
dc.contributor.authorClément, C.
dc.contributor.authorThirumalai, K.
dc.contributor.authorOliviera, D.
dc.contributor.authorAnupama, K.
dc.contributor.authorPrasad, S.
dc.contributor.authorMartinez, P.
dc.date.accessioned2022-10-24T23:51:28Z
dc.date.available2022-10-24T23:51:28Z
dc.date.issued2022
dc.identifier.citationZorzi, C., Desprat, S., Clément, C., Thirumalai, K., Oliviera, D., Anupama, K., Prasad, S., & Martinez, P. (2022). When Eastern India Oscillated Between Desert Versus Savannah-Dominated Vegetation. Geophysical Research Letters, 49(16).
dc.identifier.issn0094-8276
dc.identifier.doi10.1029/2022GL099417
dc.identifier.urihttp://hdl.handle.net/10150/666496
dc.description.abstractDuring the last glacial period, the tropical hydrological cycle exhibited large variability across orbital and millennial timescales. However, the response of the Indian summer monsoon (ISM), its related impact on terrestrial ecosystems, and associated forcing mechanisms remain controversial. Here we present a marine record of pollen-inferred vegetation changes suggesting that eastern India shifted from woody-savanna mosaics during Marine Isotopic Stage 3 to grasslands during the Last Glacial Maximum resulting from large-scale drying. Our data shows that ISM maximum is in phase with obliquity and precession maxima suggesting a dominant role of the Indian Ocean interhemispheric temperature gradient on glacial ISM variability. Persistent and abrupt dryland expansions of varying magnitude suggest rapid-scale onset of aridity during Heinrich Stadial events and during the Toba eruption. We propose that the amplitude of ISM drought events are initiated by high latitude and volcanic forcings, although modulated by precession. © 2022. The Authors.
dc.language.isoen
dc.publisherJohn Wiley and Sons Inc
dc.rightsCopyright © 2022 Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License.
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectHeinrich Stadials
dc.subjectIndian summer monsoon
dc.subjectlast glacial period
dc.subjectmillennial and orbital variations
dc.subjectpollen analysis
dc.titleWhen Eastern India Oscillated Between Desert Versus Savannah-Dominated Vegetation
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Geosciences, University of Arizona
dc.identifier.journalGeophysical Research Letters
dc.description.noteOpen access article
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleGeophysical Research Letters
refterms.dateFOA2022-10-24T23:51:28Z


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Copyright © 2022 Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License.
Except where otherwise noted, this item's license is described as Copyright © 2022 Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License.