CTD Processing Summary CalCOFI 1101NH CTD Final Data (reformatted 10/2017 for QC columns) | |||
Download 1101 CTD raw cast files zipped | Download 1101 FinalQC CTD + bottle data | ||
General CTD Notes - data acquisition cast notes, logistics, processing notes are listed below | |||
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) | -0.0016 | -0.0002 | |
Oxygen (ml/L; dual Seabird SBE43) |
y = 1.0578x - 0.0114 R² = 0.9997 |
y = 1.0623x - 0.0362 (first 50 stations only; sensor failed on 051-106) R² = 0.9996 |
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Oxygen (umol/Kg; dual Seabird SBE43) |
y = 1.049x - 0.4238 R² = 0.9997 |
y = 1.0538x - 1.4863 (first 50 stations only; sensor failed on 051-106) R² = 0.9996 |
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Single sensors | |||
Nitrate - ISUS 4sec ave voltage vs Bottle Nitrate (Satlantic MBARI-ISUS v2) |
y = 29.064x - 2.9761 R² = 0.9903 |
Please note the ISUS was removed after cast 086 so only casts 001-086 have ISUS estimated nitrate data. | |
Fluorometer - linear & polynomial regressions |
y = 13.439x - 0.2944 R² = 0.7256 |
y = 4.5466x2 + 11.036x -0.1847 R² = 0.7329 |
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General notes: | |||
CalCOFI 1101NH: 12 Jan - 06 Feb 2011 on RV New Horizon, 106 stations occupied Please refer to this webpage for more cruise info: http://www.calcofi.com/cruises/2011-cruises/calcofi-1101nh/349-1101nh-cruise-prospectus.html This cruise was re-processing in June 2015 to add oxygen in umol/Kg for the CTD database. In the process, JRW noticed the Windows Filter was mis-applied originally with the ISUS 500 cosine filter applied to voltage 4 instead of 7. This was fixed. ISUS was only deployed on stations 01-86, removed for 87-106. Also there was a cable failure on casts 20, 21, 22, 23 so there is no ISUS data on those stations. There were so ISUS drop-outs during casts 12, 15, 42, 44, 49, & 77. The bad voltages were replaced by -99 so they would not be used by the station-correction regression routine. This cruise used archive IEH bottle data to correct CTD sensor data. It appears that cast 104, the CTD operator did not start data archiving till the CTD downcast hit ~280m. Refer to the upcast data for surface to 280m data. More cast notes may be viewed online at: http://www.calcofi.com/cruises/2011-cruises/calcofi-1101nh.html JRW was not on this cruise. Cast 001 - 086 had ISUS sensor data Cast 001 - 083 had nutrient data; plots after this will require cruise-corrected only data Cast 087 - 106 no ISUS data Cast 084 - 106 not nutrient data |
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Cast specific Notes from Console Ops: |