CalCOFI 2105SH

CTD Processing Summary CalCOFI 2105SH CTD Preliminary Data
Download 2105SH CTD raw cast files zipped		Download 2105SH Preliminary CTD + bottle data
General CTD Notes - data acquisition notes, logistics, processing - see below. Please note that these regressions are generated from preliminary CTD vs bottle data and will be reprocessed once final bottle data are available. CTD temperatures and salinities do not usually change but oxygen, estimated chlorophyll-a, estimated nitrate may change significantly after point-checking. Questionable or mistrip bottle data are removed from these comparisons but may be visible on the CTD.csv plots. For this cruise and future cruises, both primary & secondary sensor profiles vs bottle data will be generated and archived in the downloadable CTD+Bottle data files. These plots are under the "csv-plots\Primary" & "csv-plots\Secondary" subdirectories.
CTD sensor corrections derived by comparing CTD sensor data, 4sec averages prior-to-bottle closure, to bottle samples
Dual T, S, & O2	Primary Sensor	Secondary Sensor
Salinity offset (bottle - CTD salinity; > 350m only; Seabird SBE4)	0.0012	0.0019
Oxygen ml/L (dual Seabird SBE43)	y = 1.0441x + 0.0678 R² = 0.9991	y = 1.0304 + 0.0680 R² = 0.9990
Oxygen umol/Kg (dual Seabird SBE43)	y =1.0458x + 2.9613 R² = 0.9991	y = 1.0320x + 3.0426 R² = 0.9990
Single sensors	Linear	Polynomial
Nitrate - ISUS 4sec ave voltage vs Bottle NO3 (Satlantic ISUS v3 SN111)	y = N/A R² = N/A
Fluorometer - linear & polynomial regressions	y= 6.4005x - 0.1646 R² = 0.9947	y = 0.8391x2+ 6.8458x - 0.1866 R² = 0.9953

Cruise Dates:	4 - 14 May 2021 (Tue-Fri; 11 DAS)
Loading:	2-3 May 2021 (Sun-Mon) board ship, load, setup Tenth Avenue Marine Terminal San Diego
Offloading:	14 or 15 May 2021, depending on arrival time (Fri or Sat) Tenth Avenue Marine Terminal San Diego
Ship:	NOAA Ship Bell M. Shimada
Station plan:	48 stations scheduled (see below)
Cruise Map:

Contacts:	This email address is being protected from spambots. You need JavaScript enabled to view it., Chief Scientist, NOAA