Detection and modeling of nontidal oceanic effects on Earth's rotation rate

被引：76

作者：

Marcus, SL ^{[1
]}

Chao, Y ^{[1
]}

Dickey, JO ^{[1
]}

Gegout, P ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

SCIENCE | 1998年 / 281卷 / 5383期

关键词：

D O I：

10.1126/science.281.5383.1656

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Subdecadal changes in Earth's rotation rate, and hence in the Length of day (LOD), are largely controlled by variations in atmospheric angular momentum. Results from two oceanic general circulation models (OGCMs), forced by observed wind stress and heat flux for the years 1992 through 1994 show that ocean current and mass distribution changes also induce detectable LOD variations. The close similarity of axial oceanic angular momentum (OAM) results from two independent OGCMs, and their coherence with LOD, demonstrate that global ocean models can successfully capture the large-scale circulation changes that drive OAM variability on seasonal and shorter time scales.

引用

页码：1656 / 1659

页数：4

共 36 条

[11] The sensitivity of a global ocean model to wind forcing: A test using sea level and wind observations from satellites and operational wind analysis [J].