干旱区生态环境知识资源中心(Arid): 基于GCM的西北干旱区降水稳定氢氧同位素年际变化模拟

Arid

	基于GCM的西北干旱区降水稳定氢氧同位素年际变化模拟
其他题名	Interannual Variation of Stable Hydrogen and Oxygen Isotopes in Precipitation in Arid Northwest China Based on GCMs
	刘杨民; 张明军; 王圣杰; 强芳; 车彦军
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2016
卷号	23 期号:1 页码:260-267,277
中文摘要	降水中稳定氢氧同位素(~(18) O)和(D)是水循环过程的重要组成部分,也是气候的天然示踪剂。为了模拟不同时空尺度上降水稳定氢氧同位素的变化,大气环流模式(GCM)已经成为研究全球或区域水循环的有效途径。本文基于全球大汽降水同位素网络(GNIP)提供的实测数据和第2次稳定水同位素比较小组(SWING2)的模拟数据,运用回归分析法和同位素GCM对比分析了西北干旱区19862003年大气降水中稳定氢氧同位素的年际变化特征。结果表明:3个同位素监测站点乌鲁木齐、张掖和和田的年均delta~(18) O_w线性倾向率分别为0.041,0.207,0.915/a,deltaD_w线性倾向率分别为0.767,0.026,0.120/a;如果只考虑暖季(59月),则delta~(18) O_w线性倾向率分别为-0.008,0.085, 0.306/a,deltaD_w线性倾向率分别为-0.331,-1.390,-1.503/a。同时,采用SWING2中的GISS-E(MERRA), GISS-E(NCEP),isoGSM(NCEP),LMDZ(free),LMDZ(ECMWF)和MIROC(free)共6种同位素GCM模式得出的delta~(18) O_w和deltaD_w的线性倾向率与回归分析法得到的结果相反。此外,分析了两种模拟方法得到的大气水线,发现各模拟结果中和田的大气水线斜率均高于乌鲁木齐和张掖。
英文摘要	The stable water isotopes in precipitation(~(18) O and D)are the tracers for climate,which is a crucial part in hydrology.According to simulation of the variation of stable water isotope in precipitation in different temporal scales,general circulation model(GCM)has been an effective way to study global and regional water circulation. Based on GNIP(Isotopic data from the Global Network of isotopes in precipitation),and isotope-equipped GCM from SWING2(Stable Water Isotope Intercomparison Group,Phase2),the interannual variation of observed and simulated results in arid Northwest Asia during the period from 1986 to 2003 was analyzed by using regression analysis and isotope-equipped GCM.According to temperature effect of isotopes in precipitation,the slopes of weighted average annualdelta~(18) O_w from GNIP are in Urumqi,Zhangye and Hotan from GNIP are 0.041,0.207, 0.915/a,respectively.The slopes of weighted average annual deltaD_w from GNIP are 0.767,0.026,0.120/a, respectively.In warm season(from May to September),the slopes of weighted average annual delta~(18) O_w from GNIP are in Urumqi,Zhangye and Hotan from GNIP are-0.008,0.085,0.306/a,respectively.The slopes of weighted average annual deltaD_w from GNIP are-0.331,-1.390,-1.503/a,respectively.The slopes of results indelta~(18) Owand deltaD_w values from GISS-E (MERRA),GISS-E (NCEP),isoGSM (NCEP), LMDZ(free),LMDZ(ECMWF)and MIROC (free)are different from the results of regression analysis. Considered the local meteoric water line(LMWL)from regression analysis and isotope-equipped GCM,the slope of meteoric water line of Hotan was greater than those of Zhangye and Urumqi.
中文关键词	降水同位素 ; 回归分析 ; 年际变化
英文关键词	GNIP GCM stable hydrogen and oxygen isotopes in precipitation regression analysis GNIP GCM interannual variation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5612681
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235001
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	刘杨民,张明军,王圣杰,等. 基于GCM的西北干旱区降水稳定氢氧同位素年际变化模拟[J]. 西北师范大学,2016,23(1):260-267,277.
APA	刘杨民,张明军,王圣杰,强芳,&车彦军.(2016).基于GCM的西北干旱区降水稳定氢氧同位素年际变化模拟.水土保持研究,23(1),260-267,277.
MLA	刘杨民,et al."基于GCM的西北干旱区降水稳定氢氧同位素年际变化模拟".水土保持研究 23.1(2016):260-267,277.