Which of the following has the least affect in generating storm surge?

tide

air temperature

wind

Ekman transport

air temperature

Explanation:

The factor for storm surge are the wind flow, tidal effects, and even the ekman transport.

The temperature of Air have the least affect on the storm surge.

Since, the tide effects the storm surge and can affect coastal areas to very extreme level.

Wind is one of the main factor for storm surge since, the flow of wind drive the storms.

Ekman transport is responsible to some extent because there will be a spiral flow of water and wind at the surface because of the shear created and may affect the storm surge.

However, temperature of air has less effect and can only affect the air convection in atmosphere but not drive storm.