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Medientyp:
E-Artikel
Titel:
A contracting Intertropical Convergence Zone during the Early Heinrich Stadial 1
Beteiligte:
Yang, Yiping;
Zhang, Lanlan;
Yi, Liang;
Zhong, Fuchang;
Lu, Zhengyao;
Wan, Sui;
Du, Yan;
Xiang, Rong
Erschienen:
Springer Science and Business Media LLC, 2023
Erschienen in:
Nature Communications, 14 (2023) 1
Sprache:
Englisch
DOI:
10.1038/s41467-023-40377-9
ISSN:
2041-1723
Entstehung:
Anmerkungen:
Beschreibung:
AbstractDespite the fact that the response of tropical hydroclimate to North Atlantic cooling events during the Heinrich Stadial 1 (HS1) has been extensively studied in African, South American and Indonesia, the nature of such responses remains debated. Here we investigate the tropical hydroclimate pattern over the Indo-Asian-Australian monsoon region during the HS1 by integrating hydroclimatic records, and examining a δ18Oseawater record from Globigerinoides ruber (white) in the tropical Indian Ocean. Our findings indicate that tropical hydrological conditions were synchronously arid in both hemispheres during the early HS1 (~18.3-16.3 ka) in the Indo-Asian-Australian monsoon region, except for a narrow, wet hydrological belt in northern low latitudes, suggesting the existence of a contracted tropical precipitation belt at that time. This study reveals that the meltwater discharge and resulting changes in global temperatures and El Niño exerted a profound influence on the tropical hydroclimate in the Indo-Asian-Australian monsoon region during the early HS1.