 |
| Titel |
Simultaneous monitoring of stable oxygen isotope composition in water vapour and precipitation over the central Tibetan Plateau |
| VerfasserIn |
W. Yu, L. Tian, Y. Ma, B. Xu, D. Qu |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 18 ; Nr. 15, no. 18 (2015-09-16), S.10251-10262 |
| Datensatznummer |
250120034
|
| Publikation (Nr.) |
 copernicus.org/acp-15-10251-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| This study investigated daily δ18O variations of water vapour
(δ18Ov) and precipitation (δ18Op)
simultaneously at Nagqu on the central Tibetan Plateau for the first time.
Data show that the δ18O tendencies of water vapour coincide
strongly with those of associated precipitation. The δ18O values of
precipitation affect those of water vapour not only on the same day, but also
for the following several days. In comparison, the δ18O values of
local water vapour may only partly contribute to those of precipitation.
During the entire sampling period, the variations of
δ18Ov and δ18Op at Nagqu did not
appear dependent on temperature, but did seem significantly dependent on the
joint contributions of relative humidity, pressure, and precipitation amount.
In addition, the δ18O changes in water vapour and precipitation
can be used to diagnose different moisture sources, especially the influences
of the Indian monsoon and convection. Moreover, intense activities of the
Indian monsoon and convection may cause the relative enrichment of
δ18Op relative to δ18Ov at Nagqu (on
the central Tibetan Plateau) to differ from that at other stations on the
northern Tibetan Plateau. These results indicate that the effects of
different moisture sources, including the Indian monsoon and convection
currents, need be considered when attempting to interpret paleoclimatic
records on the central Tibetan Plateau. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|