eprintid: 10152838
rev_number: 9
eprint_status: archive
userid: 699
dir: disk0/10/15/28/38
datestamp: 2022-07-29 10:58:42
lastmod: 2023-01-21 07:10:27
status_changed: 2022-07-29 10:58:42
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Zheng, Yanhong
creators_name: Fedorov, Alexey
creators_name: Burls, Natalie J
creators_name: Zhang, Rui
creators_name: Brierley, Chris M
creators_name: Fang, Zhengkun
creators_name: Yu, Xuefeng
creators_name: Xian, Feng
creators_name: Lu, Hongxuan
title: Severe Drought Conditions in Northern East Asia During the Early Pliocene Caused by Weakened Pacific Meridional Temperature Gradient
ispublished: pub
divisions: C03
divisions: F26
divisions: B03
divisions: UCL
keywords: drought conditions, meridional SST gradient, GDGTs, Asian summer monsoon, early pliocene
note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: The evolution of hydroclimate in East Asia during the Pliocene—a potential analog of the future greenhouse climate—remains highly uncertain. Here we reconstruct changes in the hydroclimate of Northern China during this epoch. Our results reveal previously undocumented severe drought conditions that persisted through the early Pliocene with a significantly greater magnitude than suggested by other records. Using a broad hierarchy of climate simulations, we find that reduction in the Pacific meridional sea surface temperature (SST) gradient has particularly strong impacts on precipitation over Northern China, which suggests its key role in maintaining drought conditions during the early Pliocene. The weaker Pacific meridional SST gradient causes the weakening of the East Asian summer monsoon precipitation over this region via a reduction of atmospheric northward moisture transport from the ocean, which enhances aridity inland. Our results highlight the fundamental control of the tropical ocean on the extra-tropical hydrological cycle.
date: 2022-07-28
date_type: published
publisher: AMER GEOPHYSICAL UNION
official_url: https://doi.org/10.1029/2022GL098813
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1967339
doi: 10.1029/2022GL098813
lyricists_name: Brierley, Christopher
lyricists_id: CCBBR95
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
funding_acknowledgements: 41872031 [National Natural Science Foundation of China]; 41372033 [National Natural Science Foundation of China]; 41772027 [National Natural Science Foundation of China]; [Key Scientific and Technological Team Project in Shaanxi Province]; SKLLQG1731 [State Key Laboratory of Loess and Quaternary Geology]; ANR-18-MPGA-0001 [State Key Laboratory of Loess and Quaternary Geology]
full_text_status: public
publication: Geophysical Research Letters
volume: 49
number: 14
article_number: e2022GL098813
pages: 10
issn: 0094-8276
citation:        Zheng, Yanhong;    Fedorov, Alexey;    Burls, Natalie J;    Zhang, Rui;    Brierley, Chris M;    Fang, Zhengkun;    Yu, Xuefeng;         ... Lu, Hongxuan; + view all <#>        Zheng, Yanhong;  Fedorov, Alexey;  Burls, Natalie J;  Zhang, Rui;  Brierley, Chris M;  Fang, Zhengkun;  Yu, Xuefeng;  Xian, Feng;  Lu, Hongxuan;   - view fewer <#>    (2022)    Severe Drought Conditions in Northern East Asia During the Early Pliocene Caused by Weakened Pacific Meridional Temperature Gradient.                   Geophysical Research Letters , 49  (14)    , Article e2022GL098813.  10.1029/2022GL098813 <https://doi.org/10.1029/2022GL098813>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10152838/1/Geophysical%20Research%20Letters%20-%202022%20-%20Zheng.pdf