The effects of subgrid-scale parameterizations in a zonally averaged ocean model
The effects of subgrid-scale parameterizations in a zonally averaged ocean model
复制标题
纬向平均海洋模型中亚网格尺度参数化的影响
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
D. Wright
中科院分区：
文献类型：
--
作者：
R. Knutti;T. Stocker;D. Wright
摘要在一个2.5维纬向平均海气耦合模式的海洋分量中，实现了等密度扩散和附加的输送速度参数化中尺度涡旋的影响。比较了不同混合参数化产生的海气耦合模式的平衡状态，并进行了广泛的参数敏感性研究。对于平衡基态，新的混合方案的结果是显着的在南大洋，在那里的等密度表面是陡峭的和涡流引起的运输速度近似取消迪肯细胞的温度和盐度的分布的变化。在海洋的其余部分，温度和盐度的变化相对较小。此外，新的混合方案的实施结果显着变化的强度和模式的温盐环流。全球变暖情景下耦合海洋-大气系统的瞬态响应…
Abstract Isopycnal diffusion and an additional transport velocity parameterizing the effect of mesoscale eddies are implemented in the ocean component of a 2.5-dimensional zonally averaged coupled ocean–atmosphere model. The equilibrium states of the coupled ocean–atmosphere model, resulting from the different mixing parameterizations, are compared, and extensive parameter sensitivity studies are presented. For the equilibrium base states, the new mixing schemes result in changes in the distributions of temperature and salinity that are significant in the Southern Ocean, where the isopycnal surfaces are steep and the eddy-induced transport velocity approximately cancels the Deacon cell. The temperature and salinity changes are relatively small in the rest of the ocean. Furthermore, the implementation of the new mixing schemes results in significant changes in the strength and the pattern of the thermohaline circulation. Transient responses of the coupled ocean–atmosphere system in global warming scenarios...