Study of the Overflow Transport of the Nordic Sea
Study of the Overflow Transport of the Nordic Sea
复制标题
北欧海溢流输送研究
DOI：
10.3390/w13192675
复制
发表时间：
2021-09
期刊：
影响因子：
--
通讯作者：
Lv Xianqing
中科院分区：
文献类型：
--
作者：
Shi Wenqi;Li Ning;Lv Xianqing
近几十年来，气候系统的变化对海洋环流的平均状态和变率产生了深远的影响，而北欧海溢流在过去二十年中的流量保持稳定。溢流流量的变化取决于格林兰-苏格兰海脊两侧溢流口深度处的压差。结合卫星高度计资料和再分析水文资料，分析发现1993 - 2015年海平面两侧的正压压差和斜压压差具有较好的负相关性。两者都是由于上层水的性质变化引起的，总压差没有趋势性变化。深对流的减弱只能改变北欧海的温度和盐结构，但不能减少水柱的质量。因此，稳定的压差驱动稳定的溢流。北欧海的溢流储水量正在减少，这可能是由于当地溢流产水量减少和溢流通量恒定造成的。当北欧海溢流水体的上界面接近或低于出口深度时，溢流很可能会大大减缓，甚至在未来出现中断，值得更多关注。
Changes in the climate system over recent decades have had profound impacts on the mean state and variability of ocean circulation, while the Nordic Sea overflow has remained stable in volume transport during the last two decades. The changes of the overflow flux depend on the pressure difference at the depth of the overflow outlet on both sides of the Greenland-Scotland Ridge (GSR). Combining satellite altimeter data and the reanalysis hydrological data, the analysis found that the barotropic pressure difference and baroclinic pressure difference on both sides of the GSR had a good negative correlation from 1993 to 2015. Both are caused by changes in the properties of the upper water, and the total pressure difference has no trend change. The weakening of deep convection can only change the temperature and salt structure of the Nordic Sea, but cannot reduce the mass of the water column. Therefore, the stable pressure difference drives a stable overflow. The overflow water storage in the Nordic Sea is decreasing, which may be caused by the reduction of local overflow water production and the constant overflow flux. When the upper interface of the overflow water body in the Nordic Sea is close to or below the outlet depth, the overflow is likely to greatly slow down or even experience a hiatus in the future, which deserves more attention.
登录
查看更多内容
影响因子：
5.2
作者：
Petit, Tillys;Lozier, M. Susan;Cunningham, Stuart A.
通讯作者：
Cunningham, Stuart A.
影响因子：
4.6
作者：
Brodeau, Laurent;Koenigk, Torben
通讯作者：
Koenigk, Torben
DOI：
10.1111/j.1600-0870.2009.00453.x
发表时间：
2010-01
期刊：
Tellus A: Dynamic Meteorology and Oceanography
影响因子：
--
作者：
K. Latarius;D. Quadfasel
通讯作者：
K. Latarius;D. Quadfasel
影响因子：
3.2
作者：
S. Østerhus;R. Woodgate;H. Valdimarsson;B. Turrell;L. de Steur;D. Quadfasel;S. Olsen;M. Moritz
通讯作者：
S. Østerhus;R. Woodgate;H. Valdimarsson;B. Turrell;L. de Steur;D. Quadfasel;S. Olsen;M. Moritz
影响因子：
3.5
作者：
Brakstad, Ailin;Vage, Kjetil;Moore, G. W. K.
通讯作者：
Moore, G. W. K.