The input of mechanical power to the ocean due to the surface wind stress, in regions which correspond to different regimes of ocean dynamics, is considered using data from satellites observations. Its dependence on the coarse-graining range of the atmospheric and oceanic velocity in space from 0.5 to 10^∘ and time from 6 h to 40 days is determined. In the area of the Gulf Stream and the Kuroshio extensions, the dependence of the power input on space-time coarse-graining varies over tenfold for the coarse-graining considered. It decreases over twofold for the Gulf Stream extension and threefold for the Kuroshio extension, when the coarse-graining length scale passes from a few degrees to 0.5^∘ at a temporal coarse-graining scale of a few days. It increases over threefold in the Gulf Stream and the Kuroshio extensions when the coarse-graining passes from several days to 6 h at a spatial coarse-graining of a few degrees. The power input is found to increase monotonically with shorter coarse-graining in time. Its variation with coarse-graining in space has no definite sign. Results show that including the dynamics at scales below a few degrees reduces considerably the power input by air-sea interaction in regions of strongly nonlinear ocean currents. When the ocean velocities are not considered in the shear calculation, the power input is considerably (up to threefold) increased. The dependence of the power input on coarse-graining in space and time is close to being multiplicatively separable in all regions and for most of the coarse-graining domain considered.

使用来自卫星观测的数据，考虑了在对应于不同海洋动力学机制的区域中由于地表风应力而向海洋输入的机械能。确定了其对空间中大气和海洋速度的粗粒度范围（从0.5到^10∘和时间从6 h到40天）的依赖性。在墨西哥湾流和黑潮延伸区，考虑到的粗粒度，功率输入对时空粗粒度的依赖性变化超过十倍。当粗粒度长度尺度从几度变为^0.5∘时，对于湾流扩展而言，它减少了两倍，对于黑潮扩展而言，它减少了三倍。在几天的时间粗粒度范围内。当在几度的空间粗粒度下，从几天到6小时的粗粒度经过时，它在墨西哥湾流和黑潮延伸区增加了三倍。发现功率输入随时间的粗粒度缩短而单调增加。其随空间的粗粒度变化没有明确的符号。结果表明，将动力学包括在几度以下的范围内，会大大降低强非线性洋流区域中海-气相互作用产生的功率输入。当在剪切计算中未考虑海洋速度时，功率输入将大大增加（最多三倍）。