SIO Matlab GUI

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SIO Matlab GUI

• Megan Scanderbeg
• John Gilson
• Scripps Institution of Oceanography

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Why use the SIO Matlab GUI?

• GUI program that
• Prepares floats for OW calibration
• Helps evaluate OW correction
• Writes the D mode files
• Used in coordination with other agreed upon dmode
  procedures
• Thermal mass correction
• First use of SIO GUI program
• OW calibration
• Second use of SIO GUI program
• Can be used on Unix machines or PCs

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First use of SIO GUI

• Opens all recent/ new profiles since last dmode
  instance (saves profiles with data state c
  data mode r)
• Can visually inspect all profiles before OW
• Can change qc flags as needed because of
  inversions, bad data that missed real time
  checks, etc.
• Can look at trajectory plotted over ocean
  bathymetry
• Four main display panels
• T or S vs. depth for single profile and one
  previous
• T or S vs. depth for all recent/ new profiles
• Location plot of all recent/new profiles
• T vs. S for all recent/new profiles of that float

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• Can quickly check profile param_qc flags, lat/lon
  location and time
• Check for inversions
• Compare with nearby Argo or historical data (Argo
  data from own mirror, historical data from WOD01)
• Easily change T/S flags for 1 or many points
• Look at background bathymetry or salt bathymetry

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Inversion Check Red max allowable salinity
Black salinity Green temp gradient Light
Blue podens unstable Dark Blue density
unstable
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Second use of SIO GUI

• Same code as first use of SIO GUI, with following
  differences
• Opens all profiles for the float and saves them
  with data state c data mode d
• includes OW correction and raw data in nearby
  comparison windows
• Allows subjective, visual check with nearby Argo
• Sorts data in a variety of ways to help evaluate
  possible drifting
• Includes an Action Panel which allows operator to
  modify OW correction or raw data and errors
• Allows for easy acception or rejection of OW fit
  and saves data with comments written into
  scientific comment fields

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Action Panel

• Allows simple, quick rejecting or accepting of OW
  and saves files with correction comments

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Action Panel continued

• Can adjust OW fit or raw data through simple
  arithmetic
• Easy to adjust errors
• Easy to change single point values

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Summary Conclusions

• SIO Matlab GUI is a tool to prepare floats for OW
  calibration and to evaluate the OW fit to decide
  if a float is drifting
• Easy to change qc flags in preparation for OW
  calibration
• Easy to subjectively compare OW fit to nearby
  Argo and historical data
• Easy to modify fit or adjust error size
• Easy to reject or accept OW and write files with
  appropriate comments and data states