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Influence of Regional Precipitation Patterns on Stable Isotopes in Ice Cores from the Central Himalayas : Volume 7, Issue 3 (02/05/2013)

By Pang, H.

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Book Id: WPLBN0004022831
Format Type: PDF Article :
File Size: Pages 35
Reproduction Date: 2015

Title: Influence of Regional Precipitation Patterns on Stable Isotopes in Ice Cores from the Central Himalayas : Volume 7, Issue 3 (02/05/2013)  
Author: Pang, H.
Volume: Vol. 7, Issue 3
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Kaspari, S., Mayewski, P. A., Pang, H., & Hou, S. (2013). Influence of Regional Precipitation Patterns on Stable Isotopes in Ice Cores from the Central Himalayas : Volume 7, Issue 3 (02/05/2013). Retrieved from

Description: Key Laboratory of Coast and Island development of Ministry of Education, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China. Several ice cores have been recovered from the Dasuopu Glacier and the East Rongbuk (ER) Glacier in the central Himalayas since the 1990s. Although the distance between the ER and the Dasuopu ice core drilling sites is only ∼125 km, the stable isotopic record (Δ18O or δD) of the ER core is interpreted as a precipitation proxy while the Dasuopu core as a temperature proxy. Thus, the climatological significance of the stable isotopic records of these Himalayan ice cores remains a subject of debate. Based on analysis of regional precipitation patterns over the region, we find that the different interpretations of the Dasuopu and Everest isotopic records may not be contradictive. The north–south and west–east seesaws of the Indian Summer Monsoon (ISM) precipitation are primarily responsible for precipitation falling at the ER site, which results in a negative correlation between the ER Δ18O or δD record and precipitation amount along the southern slope of the central Himalayas, corresponding to the amount effect. In addition to the ISM precipitation, non-summer monsoonal precipitation associated with winter westerlies also significantly contributes to precipitation falling at the Dasuopu site, which may cause a positive correlation between the Dasuopu stable isotopic record and temperature, in response to the temperature effect. Our results have important implications for interpreting the stable isotopic ice core records recovered from different climatological regimes of the Himalayas.

Influence of regional precipitation patterns on stable isotopes in ice cores from the central Himalayas

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