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A contracting Intertropical Convergence Zone during the Early Heinrich Stadial 1.
- Source :
- Nature Communications; 8/4/2023, Vol. 14 Issue 1, p1-8, 8p
- Publication Year :
- 2023
-
Abstract
- Despite 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 δ<superscript>18</superscript>O<subscript>seawater</subscript> 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. New and existing paleoclimatic records show the rain-belt range of the Intertropical Convergence Zone (ITCZ) in the Indo-Asian-Australian monsoon region contracted to the northern low latitudes during the early Heinrich Stadial 1 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 14
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 169782388
- Full Text :
- https://doi.org/10.1038/s41467-023-40377-9