SOLA
Online ISSN : 1349-6476
ISSN-L : 1349-6476
The Variability of Stable Isotopes and Water Origin of Precipitation over the Maritime Continent
Rusmawan SuwarmanKimpei IchiyanagiMasahiro TanoueKei YoshimuraShuichi MoriManabu D. YamanakaNaoyuki KuritaFadli Syamsudin
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2013 年 9 巻 p. 74-78

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The seasonal water cycle features over the maritime continent were determined using water sources from seven regions produced by global Rayleigh-type circulation model. The model output was validated statistically to reproduce stable isotopes by the observed δ18O and δD content of precipitation at eight stations. The model explains the Asian-Australian monsoon circulation well and demonstrates the seasonal changes of the water origin on the basis of three climatic patterns as a signature of rainy and dry season: (1) the semi-annual pattern, seasonal changes are indicated by the raise of water vapor from Indian Ocean for rainy season and southern maritime continent for dry season (2) the anti-monsoonal pattern, represented by the alternating raise and retreat of water vapor from the southwest Pacific Ocean, southern and tropical maritime continent seas, and (3) the monsoonal pattern, characterized by the raise water vapor from the Indian Ocean and northern maritime continent sea for rainy season and southern maritime continent seas for dry season.

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© 2013 by the Meteorological Society of Japan
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