scholarly journals Southern Tibetan Plateau ice core δ18O reflects abrupt shifts in atmospheric circulation in the late 1970s

2015 ◽  
Vol 46 (1-2) ◽  
pp. 291-302 ◽  
Author(s):  
Jing Gao ◽  
Camille Risi ◽  
Valerie Masson-Delmotte ◽  
You He ◽  
Baiqing Xu
Keyword(s):  
Tibetan Plateau ◽  
Atmospheric Circulation ◽  
Ice Core ◽  
Southern Tibetan Plateau ◽  
Abrupt Shifts

scholarly journals Annual Accumulation in the Mt. Nyainqentanglha Ice Core, Southern Tibetan Plateau, China: Relationships To Atmospheric Circulation over Asia

2007 ◽  
Vol 39 (4) ◽  
pp. 663-670 ◽  
Author(s):  
Shichang Kang ◽  
Dahe Qin ◽  
Jiawen Ren ◽  
Yongjun Zhang ◽  
Susan Kaspari ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Atmospheric Circulation ◽  
Ice Core ◽  
Southern Tibetan Plateau

Integration of Tibetan Plateau ice-core temperature records and the influence of atmospheric circulation on isotopic signals in the past century

2014 ◽  
Vol 81 (3) ◽  
pp. 520-530 ◽  
Author(s):  
Xiaoxin Yang ◽  
Tandong Yao ◽  
Daniel Joswiak ◽  
Ping Yao
Keyword(s):  
Tibetan Plateau ◽  
Atmospheric Circulation ◽  
El Niño ◽  
El Nino ◽  
Southern Oscillation ◽  
Ice Core ◽  
Past Century ◽  
The Tibetan Plateau ◽  
The Past ◽  
Increasing Trends

AbstractTemperature signals in ice-core δ18O on the Tibetan Plateau (TP), particularly in the central and southern parts, continue to be debated because of the large scale of atmospheric circulation. This study presents ten ice-core δ18O records at an annual resolution, with four (Malan, Muztagata, Guliya, and Dunde) in the northern, three (Puruogangri, Geladaindong, Tanggula) in the central and three (Noijin Kangsang, Dasuopu, East Rongbuk) in the southern TP. Integration shows commonly increasing trends in δ18O in the past century, featuring the largest one in the northern, a moderate one in the central and the smallest one in the southern TP, which are all consistent with ground-based measurements of temperature. The influence of atmospheric circulation on isotopic signals in the past century was discussed through the analysis of El Niño/Southern Oscillation (ENSO), and of possible connections between sea surface temperature (SST) and the different increasing trends in both ice-core δ18O and temperature. Particularly, El Niño and the corresponding warm Bay of Bengal (BOB) SST enhance the TP ice-core isotopic enrichment, while La Niña, or corresponding cold BOB SST, causes depletion. This thus suggests a potential for reconstructing the ENSO history from the TP ice-core δ18O.

Changes in annual accumulation retrieved from Geladaindong ice core and its relationship to atmospheric circulation over the Tibetan Plateau

2007 ◽  
Vol 52 (23) ◽  
pp. 3261-3266 ◽  
Author(s):  
YongJun Zhang ◽  
ShiChang Kang ◽  
DaHe Qin ◽  
Bjorn Grigholm ◽  
Paul A. Mayewski
Keyword(s):  
Tibetan Plateau ◽  
Atmospheric Circulation ◽  
Ice Core ◽  
The Tibetan Plateau

Variation of the winter mid-latitude Westerlies in the Northern Hemisphere during the Holocene revealed by aeolian deposits in the southern Tibetan Plateau

2021 ◽  
pp. 1-9
Author(s):  
Fuyuan Gao ◽  
Junhuai Yang ◽  
Shuyuan Wang ◽  
Youjun Wang ◽  
Kaiming Li ◽  
...  
Keyword(s):  
Grain Size ◽  
Tibetan Plateau ◽  
Atmospheric Circulation ◽  
Northern Hemisphere ◽  
The Holocene ◽  
Aeolian Deposits ◽  
Grain Size Distributions ◽  
Southern Tibetan Plateau ◽  
Vegetation Water ◽  
End Members

Abstract The mid-latitude Westerlies (MLW) are one of the most important atmospheric circulation systems in the Northern Hemisphere, exerting a huge influence on the climate of the region downwind, and thus on vegetation, water resources, and human wellbeing. However, the seasonal variation of the MLW during the Holocene is not yet been fully understood, especially when its contribution is the most important. Here, we used end-member (EM) modeling analysis of the grain-size distributions of a high-altitude aeolian sedimentary sequence (4452 m a.s.l.) from the Yarlung Zangbo River valley in the southern Tibetan Plateau to reveal variations in the winter MLW during the Holocene. Analysis of seasonal differences in modern atmospheric circulation suggests that the southern Tibetan Plateau was heavily influenced by the mid-latitude Westerlies at the 400, 500, and 600 hPa levels in winter, while it was seldom influenced at these levels in summer. Four grain-size end-members are identified, representing distinct aerodynamic environments, of which EM1 (modal grain size 8.1 μm) can be used as a proxy of the winter MLW. A reconstruction of the variation of the winter MLW during the Holocene based on EM1 revealed that a weaker winter MLW occurred during the Early to Middle Holocene, and a stronger winter MLW during the Middle to Late Holocene. Overall, we suggest that this change in the winter MLW was closely related to the insolation/temperature/pressure gradient between low and high latitudes in the Northern Hemisphere.

scholarly journals Changes in Atmospheric Circulation over the South-Eastern Tibetan Plateau over the last Two Centuries from a Himalayan Ice Core

PAGES news ◽  
2001 ◽  
Vol 9 (3) ◽  
pp. 14-16 ◽  
Author(s):  
Cameron P Wake ◽  
PA Mayewski ◽  
D Qin ◽  
Q Yang ◽  
S Kang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Atmospheric Circulation ◽  
Ice Core ◽  
Eastern Tibetan Plateau ◽  
The South ◽  
South Eastern
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