The dataset consists of 81 Underway CTD (UCTD) casts in the region north of Flemish Cap. The UCTD is an un-pumped profiling CTD, manufactured by the Oceanscience Group, that can be deployed from a moving ship. The UCTD measures temperature, conductivity, and pressure at 16 Hz. The pressure and its time derivative (descent rate) were low-pass filtered with a filter cutoff period of 2 s. The temperature and conductivity signals were also filtered, but with the filter cutoff period set to 0.25 s. Alignment of the temperature and conductivity was performed as a function of the instrument descent rate using an empirical relationship. Because of the rapid descent rate of the UCTD (up to 4 dbar/s), the measured temperature was corrected for the effect of viscous heating. The effect of the thermal mass of the conductivity cell was accounted for using the standard correction with the parameters determined as a function of the local instrument descent rate. The processed temperature, conductivity, and pressure were used to compute salinity, potential temperature, and potential density. Finally, the data were averaged into 1 dbar bins.

This dataset contains water temperature, salinity, and other parameters collected by CTD from research vessel Oceanus in the north Pacific Ocean off California. Cruise OC1511A by research vessel Oceanus in November 2015 had the objective to service moorings for the CCE (California Current Ecosystem) project. To calibrate and validate the mooring data, CTD casts with water samples were done. The CTD data are reported here. The CTD data have been quality-controlled and adjusted using the water sample data. Data quality is acceptable, but affected by bad weather which led to unsteady motion of the instrument package through the water. The raw CTD data files are available through the Rolling Deck to Repository program (R2R, see references), and the water sample data will be published through the Ocean Carbon and Acidification Data Portal at NCEI. Data are in NetCDF.

Sea Education Institution Sea Semester Program oceanographic data collected from 1988-2005

This dataset contains CTD casts and salinity water samples taken from research vessel Endeavor (cruise EN573) from 2016-01-26 to 2016-02-11. A number of moored platforms for the Northwest Tropical Atlantic Station (NTAS) and Meridional Overturning Variability Experiment (MOVE) projects were serviced during the cruise. These data were used to calibrate and validate the mooring data. The CTD salinity data have been quality-controlled and adjusted using the water sample data. The raw CTD data files are already available through the Rolling Deck to Repository (R2R) program under https://doi.org/10.7284/122113. Data are in NetCDF format.

Temperature profile data were collected using CTD casts in the Northeast Pacific Ocean from the NAVIGATION RESPONSE TEAM 6 from 07 October 2004 to 19 July 2005. Data were submitted by Ruby L. Becker of National Ocean Service in Silver Spring, Maryland.

The dataset consists of 115 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, height above the bottom, oxygen (2 sensors), and chlorophyll fluorescence. All sensors were sampled at 24 Hz. The data were processed using the SeaBird data processing software suite, SBEDataProcessing-Win32, and with software in MATLAB. 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 0.035 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 0.038 s). The secondary conductivity was advanced by 0.048 s (except for cast ctd001, which had the automatic deckbox advance value of 0.073 s applied. Thus the secondary conductivity from this cast was delayed by 0.025 s, giving a net advance of 0.048 s). The two oxygen voltages were 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 voltages 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. Unfortunately, it was found that the SeaBird data processing module Derive used the primary temperature and salinity in computing both primary and secondary oxygen. Because there were several casts during which the primary temperature sensor intermittently failed, this resulted in loss of oxygen data. To get around this problem, the oxygen calculation was performed separately in MATLAB using the SeaBird algorithm and with primary/secondary oxygen computed using primary/secondary T and S respectively. 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).

Temperature profile data were collected using CTD casts from the R/V HUDSON in the North Atlantic Ocean from June 1, 1985 to June 23, 1985. Data were collected by Dr. Barry Ruddick and Dr. Neil Oakey from the Dalhousie University; Institute of Oceanography as part of the Mediterranean EDDY Experiment (MEDDY).

This dataset comprises CTD data from R/V OCEANUS Cruise 34 Sept. 22 - Oct. 3 1977. These data were received from Dr. Carl Wunsch, Massachusetts Institute of Technology, via the CTD processing group at the Woods Hole Oceanographic Institution. Data has been processed by NODC to the NODC standard High-Resolution CTD/STD (F022) format. The F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.