Detecting submarine effects from space

Could space-based radar detect the wakes or ocean effects of submarines?

Potentially; sufficiently accurate satellite observations and ocean-current models could expose disturbances that indicate something submerged is present.

Researchers are working on radar and weather-satellite approaches that compare observed ocean behavior with increasingly precise current models. The concept does not require seeing a submarine directly; it looks for a disturbance that the model cannot explain. The answer captures the shift from searching for a hull to detecting its environmental signature.