作者简介:王学界(1992-),男,湖南新邵人,硕士研究生,主要从事同位素气象学与气候变化研究.E-mail:xuejiewang2015@163.com
收稿日期: 2017-04-11
修回日期: 2017-08-01
网络出版日期: 2017-09-20
基金资助
国家自然科学基金项目“湘江流域水稳定同位素的取样、模拟和比较”(编号:41571021);湖南省重点学科建设项目“地理学”(编号:2016001)资助
版权
Comparison on Spatial Distribution of Hydrogen and Oxygen Stable Isotope GCM Simulation in Global Precipitation
First author:Wang Xuejie(1992-), male, Xinshao County, Hu’nan Province, Master student.Research areas include isotopic meteorology and climate change.E-mail:xuejiewang2015@163.com
Received date: 2017-04-11
Revised date: 2017-08-01
Online published: 2017-09-20
Supported by
Foundation item:Project supported by the National Natural Science Foundation of China“Stable isotope sampling, simulation and compared in Xiangjiang River Basin”(No.41571021);Key Discipline Construction Projects in Hunan Province“Geography”(No.2016001)
Copyright
利用大气环流模式模拟降水中氢氧稳定同位素可以深入了解水循环过程中水稳定同位素的迁移变化规律并弥补实测数据在空间和时间方面的不连续性。利用10个引入水稳定同位素循环的GCM(General Circulation Models)模拟数据,分析了全球降水中稳定同位素效应的空间分布特征,对不同模式的模拟结果之间以及模拟结果与全球降水同位素监测网络(GNIP)的实际监测结果之间进行了比较,旨在对稳定同位素大气环流模式模拟结果的有效性进行评价,改善对水循环中水稳定同位素效应的理解和认识。结果显示,在δ18O的全球空间分布模拟方面,isoGSM,ECHAM4,LMDZ4和HadAM3模拟效果较佳;在δ18O的季节差的空间分布模拟方面各模式模拟效果总体较好,仅HadAM3模拟效果稍差;在δ18O与气温相关关系的空间分布模拟方面,isoGSM,GISS E-F,ECHAM4,GISS E-N和LMDZ4模拟结果与实测较匹配;在δ18O与降水量相关关系的空间分布模拟方面LMDZ4,isoGSM,GISS E-F,ECHAM4和MUGCM模拟能力较强;在全球大气降水线模拟方面GISS E-F,isoGSM和GISS E-N优势明显。
王学界 , 章新平 , 张婉君 , 张新主 , 罗紫东 . 全球降水中氢氧稳定同位素GCM模拟空间分布的比较[J]. 地球科学进展, 2017 , 32(9) : 983 -995 . DOI: 10.11867/j.issn.1001-8166.2017.09.0983
The general circulation models are used to simulate hydrogen and oxygen stable isotope in precipitation, which can enhance our understanding of the migratory processes of water stable isotope in water cycle and remedy disadvantages of measured data in spatial and temporal discontinuity. We used ten GCM (General Circulation Models) simulated data including stable isotope water cycle, and analyzed the spatial distribution characteristics of oxygen stable isotope effect in global precipitation. Meanwhile, we compared different simulated results as well as simulated results and the GNIP (Global Network of Isotopes in Precipitation) actual monitoring results. Our main purposes were to evaluate the simulative validity of stable isotope atmospheric circulation and improve our understanding and cognition for stable isotopic effect in water cycle. The results indicated that isoGSM, ECHAM4, LMDZ4 and HadAM3 showed good performances in simulating δ18O. Expect HadAM3, other simulated conclusion of models had good performances in the aspect of simulate seasonal difference of δ18O in spatial distribution. The simulated results of isoGSM, GISS E-F, ECHAM4, GISS E-N and LMDZ4 matched monitoring results more in the aspect of simulating relationship between δ18O and air temperature in spatial distribution. LMDZ4, isoGSM, GISS E-F, ECHAM4 and MUGCM had stronger capacity in the aspect of simulating relationship between δ18O and precipitation in spatial distribution. GISS E-F, isoGSM and GISS E-N had more advantage of simulate global meteoric water line.
Key words： Hydrogen and oxygen stable isotope; iGCMs; GNIP; GMWL.
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