水科学进展2017，Vol.28Issue(4)：488-495,8.DOI:10.14042/j.cnki.32.1309.2017.04.002
北京连续降水水汽输送差异的同位素示踪
Using stable isotopes to study vapor transportof continuous precipitation in Beijing
摘要
Abstract
To study changes in water vapor transport during continuous precipitation, stable isotope data, NCEP/NCAR data and Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) backward trajectory results during 22 continuous precipitation events in Beijing are analyzed.The results indicate that there are five different vapor transport types for the 22 continuous precipitations: westerly vapor transport, remote oceanic vapor transport, vicinal oceanic vapor transport, remote continental vapor transport, and vicinal continental vapor transport.Vicinal oceanic vapor transport and westerly vapor transport are predominate vapor transport types, contributing to 60.8% of the total precipitation.Variations of precipitation δ18O signals in different vapor transport types are mainly caused by differences in isotopic components in the source regions and the upstream rainout processes along the vapor transport pathways.Changes in deuterium excess reveal the influence of re-evaporation during precipitation and the humidity conditions in the vapor source areas.Fourteen continuous precipitation events are controlled by different vapor transport types at different stages, and the variations in precipitation δ18O indicate the changes in vapor transport types.These results show that isotope signals in precipitation can provide useful information for identifying vapor transport types.关键词
降水/水汽输送/同位素/HYSPLIT模型/北京Key words
precipitation/vapor transport/stable isotope/Hybrid Single Particle Lagrangian Integrated Trajectory Model/Beijing分类
天文与地球科学引用本文复制引用
宋献方,唐瑜,张应华,马英,韩冬梅,卜红梅,杨丽虎,刘飞..北京连续降水水汽输送差异的同位素示踪[J].水科学进展,2017,28(4):488-495,8.基金项目
中国科学院地理科学与资源研究所"一三五"战略科技计划项目(2012ZD003) （2012ZD003）
