The Conductivity, Temperature and Depth (CTD); and bathythermograph (XBT) data were collected as part of Distribution/Abundance of Marine Mammals in Gulf of Mexico (GULFCET I) funded by grant no MMS 14-35-0001-30619. The data was collected over two year period spanning from April 15, 1992 to December 12, 1993. Data from 239 casts of CTD and 566 XBT drops was submitted via internet by Dr. Giulietta Fargion of Texas A&M University, Galveston, TX.

The dataset contains Texas A&M University (TAMU) Gulfcet CTD; XBT; and distribution and abundance of cetaceans (whales and dolphins) data collected along the continental slope in the north-central and western Gulf of Mexico. The data was collected over 9 years spanning from April 2, 1987 through August 30, 1995. Additionally, a 46 cruise data archive of TAMU hydrography asked for by NODC was sent by Dr. Douglas C. Biggs. David Brandon sent NODC GulfCet data as a companion data set. NODC agreed to put this data on a CD-ROM. The data files are divided into two data groups: TAMU-GULFCET and TAMU-OCEANOGRAPHY. Data are reported from 256 CTD and 580 XBT stations in the TAMU-GULFCET section and from 695 CTD and 707 XBT stations in the TAMU-OCEANOGRAPHY section.

Physical, chemical, and other data were collected using trawl, SeaWifs and other instruments from the GYRE from the Gulf of Mexico. Data were collected from August 1, 1999 to August 1, 2002. Data were submitted by the Texas A&M University as part of the Deepwater project.

This dataset contains oceanographic and surface meteorological data in netCDF formatted files, which follow the Climate and Forecast metadata convention (CF) and the Attribute Convention for Data Discovery (ACDD). Sanibel-Captiva Conservation Foundation River, Estuary and Coastal Observing Network, collected the data from their in-situ Gulf of Mexico station in the Coastal Waters of Florida, Gulf of Mexico, and North Atlantic Ocean. Southeast Coastal Ocean Observing Regional Association (SECOORA), which assembles data from Sanibel-Captiva Conservation Foundation River, Estuary and Coastal Observing Network, and other sub-regional coastal and ocean observing systems of the Southeast United States, submitted the data to NCEI as part of the Integrated Ocean Observing System Data Assembly Centers (IOOS DACs) Data Stewardship Program. NCEI updates this dataset when new files are available.

CTD, marine invertebrate pathology, benthic organisms, and marine toxic substances and pollutants data were collected using CTD, net casts, and other instruments from the SEA TRANSPORTER and other platforms in the Gulf of Mexico. Data were collected from 20 May 1978 to 15 January 1979. Data were submitted by the South West Research Institute in Houston with support from the Ocean Continental Shelf (OCS). 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. Marine Invertebrate Pathology (F063) contains data from examinations of diseased marine invertebrates. Although these data maybe from field observations, they derive primarily from laboratory analyses. Data include: catch statistics (e.g., total weight, number of individual, identity of disease and number of diseased individuals) by species for any number of species; and biological condition of selected specimens. The size location, and frequency of lesions may be reported for individual specimens. Specimens are identified by an NODC Taxonomic Code. A text record is available for comments. The F132 contains data from field sampling or surveys of bottom dwelling marine organisms. The data provide information on species abundance, distribution, and biomass; they may have been collected by point sampling (grab or core), by tow (dredge, trawl or net), by photographic surveys, or by other methods. Cruise information such as vessel, start and end dates, investigator, and institution/agency; station numbers, positions and times; and equipment and methods are reported for each survey. Environmental data reported at each sampling site may include meteorological and sea surface conditions; surface and bottom temperature, salinity and dissolved oxygen; and sediment characteristics. Number of individual organisms and total weight of organisms is reported for each species. A text record is available for comments. This file contains data on ambient concentrations of toxic substances and other pollutants in the marine environment. The data derive from laboratory analyses of samples of water, sediment, or marine organisms. Samples may have been collected near marine discharge sites or during ocean monitoring surveys of large areas. Field observations of tar deposits on beaches may also be reported. Survey information includes platform type, start and end dates, and investigator and institution. If data are collected near a discharge site, discharge location, depth, distance to shore, average volume, and other characteristics are reported. Position, date, time and environmental conditions are reported for each sample station. Environmental data may include meteorological and sea surface conditions, tide stage and height, depth of the thermocline or mixed layer surface temperature and salinity, and wave height and periods. Sample characteristics, collection methods, and laboratory techniques are reported for each sample collected and analyzed. The data record comprises concentration values (or a code to indicate trace amounts) for each chemical substance analyzed. Chemical substances are

Marine chemistry, fish / shell-fish surveys, benthic organisms, and marine toxic substances and pollutants data were collected using current meter and other instruments from J.W. POWELL and other platforms in the Gulf of Mexico. Data were collected from 26 January 1993 to 13 June 1994. Data were submitted by Dr. Gary Wolf of Texas A&M University with support from the Gulf of Mexico Offshore Operations Monitoring Experiment (GOOMEX). Data has been processed by NODC to the NODC standard F069 (Marine Chemistry), F123 (Fish/Shell-fish Surveys), F132 (Benthic Organisms), and F144 (Marine Toxic Substances and Pollutants) formats. The F069 format is used for data from chemical analyses of seawater samples. Cruise information, position, date, and time is reported for each station along with sample depth, temperature, salinity, and density (sigma-t). Chemical and biochemical parameters that may be reported include: dissolved oxygen, nitrate, nitrite, ammonia, inorganic phosphate, and silicate; dissolved organic carbon, particulate organic carbon, and particulate organic nitrogen; and apparent oxygen utilization, percent oxygen saturation, adenosine triphosphate, total phaeophytin, total chlorophyll, total suspended matter, total recoverable petroleum hydrocarbons, and total resolved light hydrocarbons. The F123 format is used for data from field sampling of marine fish and shellfish. The data derive from analysis of midwater or bottom tow catches and provide information on population density and distribution. Cruise information, position, date, time, gear type, fishing distance and duration, and number of hauls are reported for each survey. Environmental data may include meteorological conditions, surface and bottom temperature and salinity, and current direction and speed. Bottom trawl or other gear dimensions and characteristics are also reported. Catch statistics (e.g., weight, volume, number of fish per unit volume) may be reported for both total haul and for individual species. Biological characteristics of selected specimens, predator/ prey information (from stomach contents analysis), and growth data may also be included. A text record is available for comments. The F132 contains data from field sampling or surveys of bottom dwelling marine organisms. The data provide information on species abundance, distribution, and biomass; they may have been collected by point sampling (grab or core), by tow (dredge, trawl or net), by photographic surveys, or by other methods. Cruise information such as vessel, start and end dates, investigator, and institution/agency; station numbers, positions and times; and equipment and methods are reported for each survey. Environmental data reported at each sampling site may include meteorological and sea surface conditions; surface and bottom temperature, salinity and dissolved oxygen; and sediment characteristics. Number of individual organisms and total weight of organisms is reported for each species. A text record is available for comments. The F144 contains data on ambient concentrations of toxic substances and other pollutants in the marine environment. The data derive from laboratory analyses of samples of water, sediment, or marine organisms. Samples may have been collected near marine discharge sites or during ocean monitoring surveys of large areas. Field observations of tar deposits on beaches may also be reported. Survey information includes platform type, start and end dates, and investigator and institution. If data are collected near a discharge site, discharge location, depth, distance to shore, average volume, and other characteristics are reported. Position, date, time and environmental conditions are reported for each sample station. Environmental data may include meteorological and sea surface conditions, tide stage and height, depth of the thermocline or mixed layer surface temperature and salinity, and wave height and periods. Sample characteristics, collection methods, and

Two sets of CTD data were taken during the 2012 surveys of the Louisiana continental shelf—Transect C off Terrebonne Bay and Transect F off Atchafalaya Bay and the 2012 Shelfwide Hypoxia cruise. Hydrographic data were obtained with the LUMCON SeaBird 911+ CTD system and a YSI 6820. Nutrient, pigment, suspended sediment, surface salinity, Secchi depth, Winkler results, and station information data were also acquired.

Chemical, current meter, and other data were collected using current meter, bottle, XBT, and CTD casts in the Gulf of Mexico from November 16, 1997 to August 8, 2000. Data were submitted by Texas A&M University as part of the Northeastern Gulf of Mexico Physical Oceanographic Program: Chemical Oceanography and Hydrography Study (NEGOM) project. There were nine cruises, all aboard R/V Gyre. The same 11 cross-shelf lines were occupied during each cruise. On each cruise, profiles of temperature, salinity, dissolved oxygen, fluorescence, backscatterance, PAR, and percent transmission were made with a Seabird CTD. Water samples were taken and analyzed for salinity, dissolved oxygen, nutrients, pigments, particulate material, particulate organic carbon and particulate organic nitrogen. Many XBT probes were released. An underway flow-through system measured near-surface temperature, salinity, and fluorescence. Acoustic Doppler current profilers measured vertical profiles of currents while underway.

The Conductivity, Temperature and Depth (CTD) and Water Depth and Temperature Bathythermograph (XBT) data were collected in Gulf of Mexico as part of Texas Institutions Gulf Ecosystem Research (TIGER) project funded by grant no MMS # 14-35-0001-30501. Data was collected from Ship GYRE cruises 92G09, 92G10 and 92G13. The data was collected over a period spanning from September 26, 1992 to October 31, 1992. Data was submitted in two diskettes by Dr. Douglas C. Biggs, Texas A&M University, College Station, TX. The originator's data containing 32 CTD observations; 52 stations and 12,860 records has been processed. CTD data is available in F022-CTD-Hi Resolution file format of NODC. The originator's bathythermograph (XBT) data has been converted and are now available on line in C116 (XBT) file format of NODC. 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. The C116/C118 format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, the XBT data files contained temperature values at non-uniform depths. These depths were recorded at the minimum number of points ("inflection points") required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. With special instruments, measurements can be obtained to 1830 m. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB.

This dataset consists of volume discharges from the Mississippi and Atchafalaya rivers collected by Louisiana State University from September 1985 to December 1987 as part of the MMS/OCS development and potential coastal habitat alteration. The sampling area was coastal Louisiana. Parameters reported are salinity, temperature and water levels. This work was funded under MMS contract number 14-12-0001-30252. The documentation includes the data format and site identification. More information can be found in "Causes of Wetland Loss in the Coastal Central Gulf of Mexico", Vol II: Technical Narrative, OCS study MMS 87-0120, R.E. Turner and D.R. Calhoun (eds.), Louisiana State University, 1988. This dataset also includes historical water level data going back to 1933.