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Salinity Compensation

We also investigate the sensitivity of our analysis to the presence of salinity compensated temperature inversions. We inferred salinity at the sensor depths from the approximately linear TS relationship measured $ 44 mab$ . If salinity compensated temperature inversions occur, the Thorpe analysis would predict spurious overturns. Overall, if salinity compensation occurred, it would lower the standard deviation of potential density. We calculate the time series of potential density at the collocated T/C sensor from the measured temperature and the measured salinity on one hand, and with the measured temperature and the inferred salinity on the other hand. We found that the standard deviation of the potential density is reduced by $ 2\%$ when we used the inferred salinity for the density calculations. We conclude that we are not overestimating dissipation by detecting false density overturns created by a temperature measurement error or a salinity compensated temperature inversion.



jerome aucan 2006-03-22