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Temperature signals in tree-ring oxygen isotope series from the northern slope of the Himalaya
Huang, R (Huang, Ru)1,3; Zhu, HF (Zhu, Haifeng)1,2; Liang, EY (Liang, Eryuan)1,2; Griessinger, J (Griessinger, Jussi)4; Wernicke, J (Wernicke, Jakob)4; Yu, WS (Yu, Wusheng)1,2; Hochreuther, P (Hochreuther, Philipp)4; Risi, C (Risi, Camille)5; Zeng, YJ (Zeng, Yijian)6; Fremme, A (Fremme, Astrid)7,8; Sodemann, H (Sodemann, Harald)7,8; Brauning, A (Braeuning, Achim)4

Oxygen isotope ratios (delta O-18) are the most commonly used parameters recorded in paleoclimate archives since they link different natural archives via the water cycle. Tree-ring delta O-18 (delta O-18(TR)) has been widely used for hydroclimate reconstructions in the Himalaya. However, few of them record temperature signals, which are dominant in Himalaya ice-core delta O-18. We hypothesize that the "precipitation amount effect" due to the South Asian Summer Monsoon (SASM) may overprint temperature signals in delta O-18(TR) series. The purpose of this study is to investigate whether temperature signals could be found in the delta O-18(TR) in locations where the influence of SASM is weak. We developed a 105-yr delta O-18(TR) chronology from the northern slope of the western Himalaya which greatly blocks the SASM. Our delta O-18(TR) clearly shows stronger correlations with temperature (dominant winter and weak summer) than summer precipitation signals. It also agrees well with summer soil moisture delta O-18 simulated by the global isotope model LMDZ4 (r = 0.72, 1979-2010). In LMDZ4, low winter temperature was found to increase winter snowfall and subsequent snow melt, and thus to increase the contribution of winter snowfall to soil moisture in summer at the expense of summer precipitation. Since winter snowfall is more depleted than summer precipitation, this leads to lower summer soil moisture delta O-18. The temperature signals found in our delta O-18(TR) series are consistent with those found in the Dasuopu ice-core delta O-18. This implies that delta O-18(TR) series from the southwest Tibetan Plateau (TP), with a weak monsoon, hold great potential to capture temperature signals. Climate interpretations of delta O-18 proxies in the Himalaya largely depend on the influence of seasonal water from the dominant atmosphere circulation systems of the westerlies or monsoon. The delta O-18 proxies from the monsoon-affected region have a higher potential for the reconstruction of boreal summer hydroclimate, whereas delta O-18 proxies from westerly-affected sites have a higher potential for temperature reconstructions. (C) 2018 Elsevier B.V. All rights reserved.

Subject AreaGeosciences
WOS IDWOS:000455693800043
Indexed BySCI
KeywordSoutheastern Tibetan Plateau Regional Precipitation Maritime Glacier Stable-isotopes Ice Cores Delta-o-18 Moisture Monsoon Record Model
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
Cooperation Status国际
Citation statistics
Document Type期刊论文
Corresponding AuthorZhu, HF (Zhu, Haifeng)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China;
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China;
4.Univ Erlangen Nurnberg, Inst Geog, Wetterkreuz 15, D-91058 Erlangen, Germany;
5.CNRS, Inst Pierre Simon LaPl, Lab Meteorol Dynam, F-75252 Paris, France;
6.Univ Twente, ITC Fac Geoinformat Sci & Earth Observat, Dept Water Resources, NL-7514 AE Enschede, Netherlands;
7.Univ Bergen, Geophys Inst, N-5007 Bergen, Norway;
8.Bjerknes Ctr Climate Res, N-5007 Bergen, Norway.
Recommended Citation
GB/T 7714
Huang, R ,Zhu, HF ,Liang, EY ,et al. Temperature signals in tree-ring oxygen isotope series from the northern slope of the Himalaya[J]. EARTH AND PLANETARY SCIENCE LETTERS,2019,506(0):455-465.
APA Huang, R .,Zhu, HF .,Liang, EY .,Griessinger, J .,Wernicke, J .,...&Brauning, A .(2019).Temperature signals in tree-ring oxygen isotope series from the northern slope of the Himalaya.EARTH AND PLANETARY SCIENCE LETTERS,506(0),455-465.
MLA Huang, R ,et al."Temperature signals in tree-ring oxygen isotope series from the northern slope of the Himalaya".EARTH AND PLANETARY SCIENCE LETTERS 506.0(2019):455-465.
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