Abstract

Stable isotopes of precipitation samples collected during two heavy rainfall events on July 29 and September 1, 2014 at 11 stations from Beijing Network of Isotopes in Precipitation, are analyzed to discuss eventful isotopic effects. No significant correlations between precipitation δ18O and temperature/elevation are found. After correction with the Rayleigh distillation model for the rainfall on July 29, a significant correlation between isotopes and latitude was obtained for both rainfall events. This implies both rainfalls are formed by southern moisture sources, which were also confirmed by water vapor budget and HYSPLIT model.

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