Deep SUNA Manual
For SUNA running firmware version 2.4 or later
6. Use Scenarios
6. Use Scenarios
6.1 Profiling
6.1.1 Objectives and Considerations
A profile is a continuous series of measurements taken over a depth range, where
nitrate concentrations may be collected for either down and up cast or both. The
descent and ascent rate together with the sensor's data rate determine the spatial
resolution of the profile.
The data rate depends on a number of factors. The integration period of the
spectrometer sets a lower limit on the data rate. Additional time is required for data
processing and data output. Output, even at high baud rates, is always slower than
internal logging of data.
6.1.2 Example
This example assumes that the sensor is not outputting any data, but only logging data
internally. The ascend and/or descend rates of the profiler are assumed to be rather
modest, thus internal averaging of spectra is used to obtain improved data quality.
It is further assumed that temperature and salinity data are collected alongside the
sensor, for post-processing employing temperature-salinity correction. Therefore, full
spectral data are logged.
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