I have mentioned several times the correlation between sea-level and change in temperature and thickness in the upper layer. Basically, as the temperature and thickness of the upper layer increases, the sea-level will increase. How well does the sea-level follow temperature changes in ocean? In the tropical Pacific, the answer is: very well. One can compare this by comparing T/P data to data obtained from the TAO moored buoys in the Pacific. The buoys measure only temperatures at various depths and these can be converted to density and then sea-level due to heating variations only. The agreement is very good, as seen in the figures below. There is more agreement in the western Pacific than in the east, due to facors other than heat that affect theT/P sea-level measurement in this region.