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Data Warts and Causes

Data Warts and Causes. Pressure Temperature Salinity . Data Warts & Causes: Temperature. Thermal mass errors. As the float ascends through temperature gradients, the cell corrupts the water temperature. The temperature corruption induces a conductivity error.

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Data Warts and Causes

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  1. Data Warts and Causes Pressure Temperature Salinity

  2. Data Warts & Causes: Temperature • Thermal mass errors. • As the float ascends through temperature gradients, the cell corrupts the water temperature. The temperature corruption induces a conductivity error.

  3. Data Warts & Causes: Temperature • Salinity drifts caused by long-term temperature drifts?

  4. Warts & Causes: Pressure • Druck Snowflakes • Internal shorts caused by conductive particles suspended in oil. • Pressure samples are erratic or off-scale.

  5. Warts & Causes: Pressure • Druck Microleaks

  6. Warts & Causes: Pressure • APEXs with Apf8 controllers don’t report negative surface pressure.

  7. Warts & Causes: Salinity • Salinity drifts high of correct.

  8. Warts & Causes: Salinity • Salinity drifts high toward correct. • TBT contamination flushes out of the cell as the profile is collected.

  9. Warts & Causes: Salinity • Salinity jumps low of correct.

  10. Warts & Causes: Salinity • Salinity hooks. • STP sample collected at the apogee of descent forms a high-of-correct “hook” with respect to shallower samples.

  11. Warts & Causes: Salinity • Salinity hooks. • Ascent/descent asymmetry in Bernoulli flushing. • Higher salinity water in cell carried from surface (or park level) to deep profile level. • Incomplete flushing results in salinity that is high-of-correct by ~0.005PSU.

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