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ITP 10 Data Processing

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ITP surface buoy status

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ITP profiler engineering data

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Number of bad points removed (top); variance of vertical difference of temperature and salinity in step region for up-going profiles; depth of staircase layer; temperature lag (bottom).

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Top: conductivity lag, Middle: conductivity thermal mass amplitude correction, Bottom: conductivity thermal mass lag correction.

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Top: down pressure deviation correction, Middle: salinity ratio adjustment, Bottom: Number of filtered spikes.

The 537 profiles that were recovered from the ITP were processed according to the procedures described in the ITP Updated Data Processing Procedures.  The processing parameters for ITP 10 are shown in the figures to the right.  Thermohaline staircases are found in some profiles but not prevalent throughout the time series.  However, the sensor lags determined from the staircase profiles are consistent.  Few instances of biofouling were detected, and only one bad salinity profile was eliminated.  Drift speeds never exceeded 30 cm/s so that the profiler was not hindered from completing full vertical profiles due to hydrodynamic drag.  However, the version of the operating software in the 2007 profilers contained an overflow bug which caused instrument resets at random times.  ITP 10 experienced 23 resets with complete loss of data for these profiles, and typically incomplete vertical coverage for the next subsequent profiles.  

See the Data Products tab to the left for descriptions of the three levels (I, II, III) of data processing and to access all data.

Last updated: September 23, 2020

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