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The dataset consists of 100 CTD casts in the region north of Flemish Cap. Some casts cover the full water column, while others only cover the upper 1000 db. The CTD casts were obtained with a SeaBird SBE911+ system, measuring temperature (2 sensors), conductivity (2 sensors), pressure, beam transmission, oxygen (plumbed in series with the primary T/C sensor pair), chlorophyll fluorescence, and turbidity. All sensors were sampled at 24 Hz. The data were processed using the SeaBird data processing software suite, SBEDataProcessing-Win32. A low pass filter, with time constant of 0.15 s, was applied to the pressure record. To account for the transit time between the temperature and conductivity sensors, the conductivity measurements were aligned with the temperature measurements using empirically determined time delays. The primary conductivity was delayed by 0.011 s relative to pressure (this is in addition to the advance of 0.073 s which is performed by the SeaBird deckbox during data acquisition, thus resulting in a net advance of 0.062 s). The secondary conductivity was advanced by 0.050 s. The oxygen voltage was advanced by 4 s relative to pressure. A correction for conductivity cell thermal mass effects was applied to both conductivity channels using the parameters recommended by SeaBird (alpha=0.03, 1/beta=7.0). The temperatures, conductivities, and oxygen voltage were then median filtered using a 7-scan window. A loop edit step was then applied, whereby portions of the cast in which the pressure was not changing sufficiently fast (0.2 dbar/s) were removed. This was followed by computation of salinity, potential temperature, potential density, sound velocity, geopotential anomaly, and oxygen concentration. Finally, the data from the downcast were averaged into 1 dbar bins. Further details of the CTD data processing can be found in the header portion of the individual cast files. The final data files contain raw sensor values (1 dbar bin averages) plus a number of derived variables (e.g., potential temperature, salinity, sigma-theta, oxygen). A full list of the output variables is contained in the header portion of the cast files. The casts were visually examined to determine the quality of the data from the 2 separate sensor suites (primary and secondary). A header line was placed in each file indicating the preferred sensor pair (PRIMARY or SECONDARY) if one was bad or whether both were of equal quality (BOTH GOOD).

CTD and other data were collected by the National Ocean Service's Response Team No. 2 in the Gulf of Mexico from 25 January 2001 to 05 May 2001. Data include temperature and salinity profiles. Data are in the Woods Hole Oceanographic Institute (WHOI) CTD exchange format.

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Oceanographic data from CTD casts from 01 May 1992 to 08 May 1992. Data were collected by Texas A&M University (TAMU) as part of the Texas-Louisiana Shelf Circulation and Transport Processes Study (LATEX PART A). Data are self documenting and parameters include temperature, pressure, oxygen concentration, transmissivity, potential temperature, sound velocity, fluorescence, irradiance (PAR), and backscatter.

Pressure and temperature profile data were collected using CTD casts from the Northeast Pacific Ocean, Coastal Waters of California, and Mississippi river from July 25, 2005 to March 23, 2006. Data were submitted by the National Ocean Service (NOS).

Physical, chemical and optical data were collected with CTD casts in southwestern Lake Michigan from January 30, 1998 to October 24, 2002. Dr. Russel L. Cuhel of the University of Wisconsin-Milwaukee, Great Lakes Wisconsin Aquatic Technology and Environmental Research (WATER) Institute collected and submitted these data to the National Oceanographic Data Center.