气候变化领域集成服务门户(CCPortal): 青藏高原纳木错流域夏、秋季大气降水中delta`18O与水汽来源及温度的关系

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	青藏高原纳木错流域夏、秋季大气降水中delta`18O与水汽来源及温度的关系
其他题名	Variations of delta18O in Summer and Autumn Precipitation and Their Relationships with Moisture Source and Air Temperature in Nam Lake Basin, Tibet Plateau
	徐彦伟; 康世昌; 周石; 丛志远; 迟妍妍; 张强弓
发表日期	2007
ISSN	1000-0690
卷号	27 期号:5 页码:718-723
中文摘要	根据2005年8～10月在纳木错收集的降水样和相关气象观测,分析该地区降水中delta~(18)O变化特征及其与水汽来源关系,揭示不同水汽来源降水中delta~(18)O与温度之间关系.观测期间水汽来源以西南季风和青藏高原本地气团输送为主.结果表明,纳木错流域夏、秋季节历次降水中delta~(18)O变化主导因素是水汽来源不同.远距离输送夏季风海洋性气团形成的降水delta~(18)O值较低,而局地大陆性气团降水delta~(18)O较高.对同源的降水事件,气温和delta~(18)O值有一定正相关性,因而可能是次一级的响因素.
英文摘要	Precipitation samples were collected at Nam Co Comprehensive Observation and Research Station, Tibet Plateau, during August to October of 2005. Relationships between delta~(18)O in precipitation and moisture source are analyzed by using air mass backward trajectories. Difference of moisture source is the primary factor which influences variations of delta~(18)O. While more negative delta~(18)O values occur in precipitation which is caused by moisture originating mainly from Indian Ocean and transported by summer Southwest Monsoon, less negative delta~(18)O values are associated with precipitation by local moistures and westerlies. According to the air mass backward trajectories, precipitation events are divided into two types： continental and marine precipitation. Positive correlations exist between delta~(18)O and air temperature for both types of precipitation events, suggesting secondary affects of temperature on precipitation delta~(18)O.
关键词	降水水汽来源气温纳木错青藏高原
英文关键词	delta18O;precipitation;delta^18O;moisture sources;air temperature;Nam Co;Tibet Plateau
语种	中文
来源期刊	地理科学
来源机构	中国科学院西北资源环境生态研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/89720
推荐引用方式 GB/T 7714	徐彦伟,康世昌,周石,等. 青藏高原纳木错流域夏、秋季大气降水中delta`18O与水汽来源及温度的关系[J]. 中国科学院西北资源环境生态研究院,2007,27(5):718-723.
APA	徐彦伟,康世昌,周石,丛志远,迟妍妍,&张强弓.(2007).青藏高原纳木错流域夏、秋季大气降水中delta`18O与水汽来源及温度的关系.地理科学,27(5),718-723.
MLA	徐彦伟,et al."青藏高原纳木错流域夏、秋季大气降水中delta`18O与水汽来源及温度的关系".地理科学 27.5(2007):718-723.