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A contracting Intertropical Convergence Zone during the Early Heinrich Stadial 1

Yang, Yiping ; Zhang, Lanlan ; Yi, Liang ; Zhong, Fuchang ; Lu, Zhengyao LU ; Wan, Sui ; Du, Yan and Xiang, Rong (2023) In Nature Communications 14(1).
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 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... (More)

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 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.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Communications
volume
14
issue
1
article number
4695
publisher
Nature Publishing Group
external identifiers
  • pmid:37542043
  • scopus:85166597620
ISSN
2041-1723
DOI
10.1038/s41467-023-40377-9
language
English
LU publication?
yes
id
1a2b2d20-2aab-449f-b477-a4cdc72f370d
date added to LUP
2023-10-19 10:06:18
date last changed
2024-04-19 02:33:18
@article{1a2b2d20-2aab-449f-b477-a4cdc72f370d,
  abstract     = {{<p>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<sup>18</sup>O<sub>seawater</sub> 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.</p>}},
  author       = {{Yang, Yiping and Zhang, Lanlan and Yi, Liang and Zhong, Fuchang and Lu, Zhengyao and Wan, Sui and Du, Yan and Xiang, Rong}},
  issn         = {{2041-1723}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Communications}},
  title        = {{A contracting Intertropical Convergence Zone during the Early Heinrich Stadial 1}},
  url          = {{http://dx.doi.org/10.1038/s41467-023-40377-9}},
  doi          = {{10.1038/s41467-023-40377-9}},
  volume       = {{14}},
  year         = {{2023}},
}