Abstract
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 δ18O- 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 (>1̃5‰) and lower values in summer (1̃0‰). 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.
Original language | English |
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Pages (from-to) | 137-148 |
Number of pages | 12 |
Journal | Climate Research |
Volume | 23 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2003 Jan 31 |
All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Environmental Science(all)
- Atmospheric Science