A parcel of water is added to the ocean surface that is denser than any water in the ocean. Suppose the parcel sinks adiabatically to the ocean bottom. Estimate the change in temperature that the parcel undergoes, being explicit about the assumptions you make.

The temperature of the air parcel will decrease. Having a higher density it will sink back.

Explanation:

The adiabatic change in temperature of the parcel of air as it sinks in the ocean bottom. The changes are seen in the dew point as it rises even though the amount of moisture in the parcel means the same. Wen the unsaturated air rises the temperate of the parcel decrease by 10 degrees.

I  cant see the question.