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| Titel |
Precipitation record since AD 1600 from ice cores on the central Tibetan Plateau |
| VerfasserIn |
T. Yao, K. Duan, B. Xu, N. Wang, X. Guo, X. Yang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 4, no. 3 ; Nr. 4, no. 3 (2008-08-22), S.175-180 |
| Datensatznummer |
250001740
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| Publikation (Nr.) |
 copernicus.org/cp-4-175-2008.pdf |
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| Zusammenfassung |
| Lack of reliable long-term precipitation record from the northern Tibetan
Plateau has constrained our understanding of precipitation variations in
this region. We drilled an ice core on the Puruogangri Ice Field in the
central Tibetan Plateau in 2000 to reveal the precipitation variations. The
well dated part of the core extends back to AD 1600, allowing us to
construct a 400-year annual accumulation record. This record shows that the
central Tibetan plateau experienced a drier period with an average annual
precipitation of ~300 mm in the 19th century, compared to ~450 mm
in the wetter periods during 1700–1780 and the 20th century.
This pattern agrees with precipitation reconstructions from the Dunde and
Guliya ice cores on the northern Plateau but differs from that found in the
Dasuopu ice cores from the southern Plateau The north-south contrasts in
precipitation reconstruction reveals difference in moisture origin between
the south Tibetan Plateau dominated by the Asian monsoon and the north
Tibetan Plateau dominated by the continental recycling and the westerlies. |
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