The 2014 PIRATA Northeast Extension Cruise EN-550 was designed to collect observations in the northeast Tropical Atlantic, to service the northeast extension of the PIRATA array, to collect CTD casts at each of the mooring sites, and to recover six subsurface hydrophone moorings in an NSF funded study (the cruise was co-chartered by NSF). The cruise track passes through the climatologically significant Tropical North Atlantic region, including the southeast corner of the subtropical North Atlantic (a region of subduction for the subtropical cell circulation); the Guinea Dome and oxygen minimum shadow zone where the subtropical and tropical gyres meet, and the Tropical Atlantic current system and equatorial waveguide. All major scientific goals of EN-550 were achieved.

The 2013 PIRATA Northeast Extension (PNE) and Aerosols and Ocean Science Expedition (AEROSE) Cruise RB-13-01 was designed to: (1) collect a suite of oceanographic and meteorological observations in the northeast Tropical Atlantic; (2) recover and redeploy the four moorings that belong to the Northeast Extension of the PIRATA array; (3) recover and redeploy the TFlex mooring near 20N, 38W; (4) to perform a sensor swap for the PIRATA mooring at 0ºN, 23ºW; and (5) to recover and redeploy two hydrophone moorings as well as deploy an additional hydrophone mooring. The oceanographic component of (1) includes the collection of data along 23ºW using CTD-O2/rosette/LADCP, XBTs and an underway CTD and the collection of XBT and underway CTD profiles on the return transit to Puerto Rico. The 23W section cuts through the climatologically significant Tropical North Atlantic (TNA) region, including the southeast corner of the subtropical North Atlantic (a region of subduction for the subtropical cell circulation); the Guinea Dome and oxygen minimum shadow zone where the subtropical and tropical gyres meet, and the Tropical Atlantic current system. The meteorological component of (1) focused on the measurement of aerosols, ozone and atmospheric conditions. All scientific goals of RB-13-01 were achieved.

The November - December 2013 PIRATA (Prediction and Research Moored Array in the Tropical Atlantic) Northeast Extension (PNE) and Aerosols and Ocean Science Expedition (AEROSE) cruise RB-13-06 was designed to (1) Collect oceanographic and meteorological observations in the northeastern tropical Atlantic, (2) Recover and redeploy the PIRATA Northeast Extensions’ four Autonomous Temperature Line Acquisition (ATLAS) moorings, and (3) Recover and redeploy the TFlex mooring located near the 20°N, 38°W ATLAS mooring. The oceanographic component of (1) includes measurements of conductivity, temperature, pressure, oxygen concentration, and horizontal velocity from CTD casts and measurements of temperature and depth from XBT deployments. The majority of the measurements were acquired along the 23°W meridian, which samples the southeastern corner of the subtropical North Atlantic, a region of subduction that is important for the subtropical cell circulation; the Guinea Dome and oxygen minimum zone, where the subtropical and tropical gyres meet; and the tropical current system and equatorial waveguide. The meteorological component of (1) focused on measurements of atmospheric aerosols, temperature, water vapor, ozone, trace gases, winds, and other properties. All scientific goals of RB-13-06 were achieved.

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.

Cruise 449/1 by research vessel Oceanus in July 2008 had the objective to service a number of moored platforms for the Northwest Tropical Atlantic Station (NTAS) and Meridional Overturning Variability Experiment (MOVE) projects. To calibrate and validate the mooring data, CTD casts with salinity water samples were collected; these data are reported here. The CTD salinity data have been quality-controlled and adjusted using the water sample data. The raw CTD data files are included in this archive as well and contain other parameters such as oxygen, optical attenuation, and fluorescence, which are not thoroughly calibrated. The data format is NetCDF.

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Deep water sampling of in situ seawater and associated fauna (cruise DP01, May 1-8, 2015) aboard R/V Point Sur for an area encompassing roughly 28°N to 29°N and 87.5°W to 88.5°W. Submitted data in this dataset are the salinity, temperature, dissolved oxygen, and depth data from the ship's CTD, which is deployed at each of the DEEPEND stations. Depth of cast is variable, but extends from near-surface waters to below the euphotic zone. This data is used in the assessment of the water column's vertical structure, and for comparison with physical models.

Endeavor cruise EN-287 (referred to here as E9608), 14 August to 01 September, 1996, Narragansett to Narragansett, Rhode Island. Conventional CTD casts made to provide observations between SeaSoar tows.

This dataset contains CTD, water quality and particle and zooplankton sample elemental (total C and N, C/N ratio) and isotopic (delta 13C, delta 15N) data collected during R/V Endeavor cruise EN496 in the northern Gulf of Mexico from 2011-07-03 to 2011-07-26. Particle and zooplankton samples were collected during cruise EN496 using a CTD-rosette and a MOCNESS. The objectives were to collect water column and benthic samples in the vicinity of the Mississippi River Plume, as well as, at/near active seeps. Elemental and isotopic data were collected at 18 stations, while CTD profiles were done at 51 locations. Elemental and isotopic data includes the delta 13C and 15N, total Nitrogen and Carbon and the C/N ratio. Hydrographic data was collected using a Sea-Bird SBE-9 and the data includes temperature, salinity, oxygen concentration, sound velocity, beam attenuation and transmission, sea level, Photosynthetically Active Radiation (PAR), fluorescence and surface irradiance.

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).