California Cooperative Oceanic Fisheries Investigations

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1207OS CTD Processing Notes

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General Note regarding CalCOFI 1207OS CTD data:

Download 1207 CTD raw cast files zipped Download 1207 Preliminary CTD + bottle data
 
CTD sensor corrections derived by comparing 4 secs of CTD sensor data (prior to bottle closure) to bottle samples
Dual T, S, & O2 Primary Sensor Secondary Sensor  
Salinity offset (bottle - CTD salinity; > 350m only; Seabird SBE4)
-0.0060
-0.0031
 
Oxygen (dual Seabird SBE43) y = 1.0344x - 0.0258
R² = 0.9997
y = 1.0341x - 0.0231
R² = 0.9996
 
Single sensors
Nitrate - ISUS 4sec ave voltage vs Bottle Nitrate (Satlantic MBARI-ISUS v2) y = 27.921x - 7.9681
R² = 0.9912
   
Fluorometer - power & linear regressions

y = 7.3979x1.3375

R² = 0.8319

y = 5.541x - 0.0527

R² = 0.5896

 
  
Primary CTD O2 Sensor vs Bottle O2
  
Secondary CTD O2 Sensor vs Bottle O2
MBARI-ISUS Voltage vs Bottle NO3 Seapoint Fluorometer Voltage vs Chlorophyll-a









 

Last Updated on Friday, 27 July 2012 16:03