| Autor: |
Kwang-Sik Lee1 kslee@kbsi.re.kr, Grundstein, Andrew J.2, Wenner, David B.3, Man-Sik Choi1, Nam-Chil Woo4, Dae-Ha Lee5 |
| Předmět: |
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| Zdroj: |
Climate Research. 1/31/2003, Vol. 23 Issue 2, p137-148. 12p. 2 Diagrams, 1 Chart, 11 Graphs, 14 Maps. |
| Abstrakt: |
An examination of oxygen and hydrogen isotopic compositions of precipitation in NE Asia from the IAEA/WMO data set reveals that many sites have a distinct winter-summer seasonal pattern in deuterium excess (d-) values that appears to reflect different climatic conditions. To further understand this pattern, stable isotopic data were obtained for individual rainfall events over a 2 yr period at Jeju Island, Korea. The δ[sup 18]O- and δD-values of precipitation at Jeju Island are not dependent upon temperature. However, the deuterium excess values, which range from 3.0 to 40.6%, show a distinct seasonal variation with higher d-values in winter (>∼15‰) and lower values in summer (∼10‰). Such a seasonal variation is closely related to different air masses affecting the island during different seasons: a cold-dry continental polar air mass in winter and a hot-humid maritime tropical air mass in summer. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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