An assessment of the regional distribution of the oxygen-isotope ratio in northeastern Canada

被引：3

作者：

Giovinetto, MB ^{[1
]}

Holdsworth, G ^{[1
]}

Fisher, DA ^{[1
]}

Waters, NM ^{[1
]}

Zwally, HJ ^{[1
]}

机构：

[1] Univ Calgary, Calgary, AB T2N 1N4, Canada

来源：

ANNALS OF GLACIOLOGY, VOL 25, 1997: PAPERS FROM THE INTERNATIONAL SYMPOSIUM ON REPRESENTATION OF THE CRYOSPHERE IN CLIMATE AND HYDROLOGICAL MODELS HELD AT VICTORIA, BRITISH COLUMBIA, CANADA, 12-15 AUGUST 1996 | 1997年 / 25卷

关键词：

D O I：

10.3189/S0260305500014063

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A compilation of mean Values of the oxygen-isotope ratio relative to standard mean ocean water (delta(18)O. in %) for 22 sites representative of conditions in northeastern Canada is complemented with data on mean annual surface temperature. latitude, surface elevation, and mean annual shortest distance to open ocean denoted by the 10% sea-ice concentration boundary. Stepwise regression analysis is used to develop a multivariate model suitable to infer the distribution of delta(18)O in an area of complex topography and possibly mixed sourcing of advected water vapor. The best model is produced by a run in the backward mode at the 95% confidence level in which only temperature, latitude and distance to the open ocean remain in the model (the correlation coefficient is 0.915, the adjusted coefficient of determination is 0.809. the root mean square residual is 1.62). This model is similar to the best delta(18)O predictive model derived elsewhere for Greenland, suggesting a common principal source of advected moisture.

引用

页码：214 / 219

页数：2