Influence of the Indian Ocean Dipole on tree-ring δ18O of monsoonal Southeast Tibet

Philipp Hochreuther (), Jakob Wernicke, Jussi Grießinger, Thomas Mölg, Haifeng Zhu, Lily Wang and Achim Bräuning
Additional contact information
Philipp Hochreuther: University of Erlangen-Nuremberg
Jakob Wernicke: University of Erlangen-Nuremberg
Jussi Grießinger: University of Erlangen-Nuremberg
Thomas Mölg: University of Erlangen-Nuremberg
Haifeng Zhu: Chinese Academy of Sciences
Lily Wang: Chinese Academy of Sciences
Achim Bräuning: University of Erlangen-Nuremberg

Climatic Change, 2016, vol. 137, issue 1, No 15, 217-230

Abstract: Abstract We present a newly developed, annually resolved tree-ring cellulose δ18O chronology for the southeastern Tibetan Plateau (TP) from Sikkim larch (Larix griffithii), spanning between 1684 and 2012. Comparisons with local and regional climate data reveal strong positive correlations with monthly sunshine hours, temperature and daily temperature amplitude as well as strong negative correlations with relative humidity, vapor pressure, rain days per month and cloud cover of August. Relationships with local and regional tree-ring δ18O chronologies are stable and highly significant. Over the 20th century, we find no long-term climatic trends. This is consistent with other tree-ring δ18O chronologies of other tree species south of the Himalayas, but contrasts with results from isotope studies north of the Himalayas. This suggests stable macroclimatic flow patterns throughout the last centuries for the southern tree stands. In terms of large-scale climate dynamics, we find evidence of a significant 30-year wave influencing our tree-ring oxygen chronology, most probably induced by the Indian Ocean Dipole and influencing tree-ring oxygen isotope chronologies along the southeastern Himalaya and the southeastern rim of the TP. This pattern is spatially and temporarily consistent among the chronologies and has apparently strengthened during the last century. During periods of strong positive dipole mode activity, the dipole mode index shows positive correlations with the δ18O of tree-rings on the southeastern TP.

Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1007/s10584-016-1663-8 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:climat:v:137:y:2016:i:1:d:10.1007_s10584-016-1663-8

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10584

DOI: 10.1007/s10584-016-1663-8

Access Statistics for this article

Climatic Change is currently edited by M. Oppenheimer and G. Yohe

More articles in Climatic Change from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().