Climate in Sundaland and Asian monsoon variability during the last deglaciation

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Chabangborn, Akkaneewut (author)

Climate in Sundaland and Asian monsoon variability during the last deglaciation

Article/chapterEnglish2018

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Elsevier BV,2018
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LIBRIS-ID:oai:DiVA.org:su-157645
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-157645URI
https://doi.org/10.1016/j.quaint.2017.04.017DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

The lack of semi-quantitative paleo data from mainland Southeast Asia, especially from the emergent Sundaland, creates a marked difficulty in following the past Asian monsoon variability. The published pollen records from the adjacent sites to the Sundaland were selected in this study and evaluated for the relationship between taxa and plant functional types (PFTs), and subsequently between PFTs and biome, to eventually reconstruct the semi-quantitative temporal temperature and precipitation profile. In order to comprehend the Asian monsoon modification between 18.5 and 11 ka BP, the derived pollen based temperature and precipitation records were further analyzed together with other selected speleothem records from the Asian monsoon region, with reference to the Greenland and Antarctic ice cores. The warmer temperature in the Southern Hemisphere caused a southward shift of the mean position of the Intertropical Convergent Zone (ITCZ) and weakened the summer monsoon in the Asian monsoon region between 18.5 and 15 ka BP. The Northern Hemisphere temperature played an important role in the Asian monsoon modification between 15 and 13.5 ka BP, where the warmer Northern Hemisphere conditions strengthened the summer monsoon intensity in the Asian monsoon region and moved the mean position of the ITCZ to the north. However, the opposing precipitation pattern between the East and the West Indian Ocean suggested the potential influence of the Walker circulation on the Sundaland climate from 13.5 to 11 ka BP.

Subject headings and genre

NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
Asian monsoon
Intertropical Convergence Zone (ITCZ)
Walker circulation
Sundaland
Biome

Added entries (persons, corporate bodies, meetings, titles ...)

Yamoah, Kweku K. A.Stockholms universitet,Institutionen för geologiska vetenskaper(Swepub:su)afya3481 (author)
Phantuwongraj, Sumet (author)
Choowong, Montri (author)
Stockholms universitetInstitutionen för geologiska vetenskaper (creator_code:org_t)

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In:Quaternary International: Elsevier BV479, s. 141-1471040-61821873-4553

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...

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By the university: Stockholm University

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