Salvato in:
| Autori principali: | , , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
2016
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| Soggetti: | |
| Accesso online: | https://doi.org/10.1594/PANGAEA.869841 |
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Sommario:
- We present two new multi-century long tree-ring d18O chronologies from the southeastern Tibetan Plateau. The longer chronology dates back to 1353 CE, representing the longest annually resolved d18O chronology in the region, covering 660 years (1353-2012 CE). Both chronologies show strong relations to summer season precipitation, relative humidity, and temperature. We applied linear transfer functions and developed a summer season precipitation and a summer season relative humidity reconstruction. Moisture conditions during the past six centuries were characterized by a more humid period during 1700-1850 CE and a drying trend since the mid-19th century. Spatial correlations between the d18O chronologies and gridded reanalysis data (ERA-20C) revealed strong regional and remote associations to west central Asian, northeastern Europe, and to the western equatorial Pacific. These findings imply a potential influence of (i) atmospheric wave trains emanating from the North Atlantic and (ii) equatorial Pacific sea surface temperatures on the moisture variability over southeastern Tibet.