This dataset contains temperature, salinity, dissolved oxygen, and current velocities obtained from the long-term Fisheries Oceanography in Coastal Alabama (FOCAL) mooring operated by the Dauphin Island Sea Lab (DISL). The mooring is located at 30°05.410'N, 88°12.694'W, along the 20-m isobath about 25 km southwest of Mobile Bay, Alabama. This dataset contains non-continuous data collected between 2007-10-01 and 2016-08-19 using a variety of instruments, including thermistors, CTDs, and a bottom-mounted, upward-looking RDI 600 Workhorse Sentinel ADCP. Parameters include temperature; salinity; current vectors, speeds, and direction; dissolved oxygen and oxygen saturation; and sound velocity, although not all datasets contain each parameter. The data are in ASCII format, and the raw ADCP data is also included.

Eight conductivity, temperature and depth (CTD) casts made from R/V Pelagia and R/V E.O. Wilson in mouth of Mobile Bay and its environs, 2016-03-22 to 2016-04-19. The field campaign was part of a long-standing effort to understand the nature of buoyant freshwater plumes in shallow micro-tidal environments. Stations were re-occupied up to six times in the mouth of and just outside Mobile Bay, Alabama. Data include profiles of pressure, temperature, conductivity, salinity, oxygen, pH, beam attentuation, beam transmission, and particulate concentration and size distribution; measurements were obtained with a SeaBird SBE19+, a Seabird SBE25 Sealogger, and a LASER In-Situ Scattering and Transmissometry 100-X (LISST). CTD profiles are provided in cnv format, while total suspended solids, particle concentration, and particle size distribution are provided in plain ASCII text.

Fifty-five conductivity, temperature, and depth (CTD) casts made in mouth of Mobile Bay and its environs, 2015-09-20 to 2015-10-29. The field campaign was part of a long-standing effort to understand the nature of buoyant freshwater plumes in shallow micro-tidal environments. Data include profiles of pressure, temperature, conductivity, salinity, oxygen, pH, beam attentuation, beam transmission, and particulate concentration and size distribution; measurements were obtained with a Seabird SBE25 Sealogger, and a LASER In-Situ Scattering and Transmissometry 100-X (LISST). CTD profiles are provided in cnv format, while total suspended solids, particle concentration, and particle size distribution are provided in plain ASCII text.

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These datasets consist of profile data collected by CTD casts in the northern Gulf of Mexico that are collected as part of the annual summer groundfish survey supported by the Southeast Area Monitoring and Assessment Program (SEAMAP). SEAMAP is a State/Federal/university program for collection, management and dissemination of fishery-independent data and information in the southeastern United States. Data are in Sea-Bird CNV format.

This dataset contains monthly-averaged surface fields of temperature, salinity, total alkalinity (TA), and dissolved inorganic carbon (DIC) derived from the GoMBio model for 1981-2014. GoMBio is a ROMS-based 8-km resolution ocean-biogeochemical model encompassing the entire Gulf of Mexico. Model details can be found in Gomez et al. (2018; https://doi.org/10.5194/bg-15-3561-2018) and Gomez et al. (2020; https://doi.org/10.5194/bg-17-1685-2020). We include the results of four model experiments: (1) model hindcast, (2) climatological Mississippi-Atchafalaya chemistry experiment (CLM_MC), (3) climatological river experiment (CLM_RIV), and (4) climatological forcing experiment (CLM_FORC). The model hindcast experiment was forced with surface fluxes of momentum, heat, and freshwater from the European Center for Medium Range Weather Forecast reanalysis product (ERA-Interim). We prescribed a time-evolving monthly series of freshwater discharge for 28 river sources in the U.S., and a climatological discharge for 10 rivers in the U.S. and 11 rivers in Mexico. We also prescribed time evolving concentration of nutrients, TA, and DIC for the Mississippi and Atchafalaya River System (MARS), and long-term climatological values for the other river sources. The CLM_MC and CLM_RIV experiments are like the model hindcast, but the river inputs were modified to evaluate the model sensitivity to changes in river runoff. In the CLM_MC experiment we used a monthly climatology for the MARS. In the CLM_RIV experiment we used climatological river discharge values for all rivers, as well as the climatological chemistry for the MARS. Finally, in the CLM_FORC experiment, we prescribed climatological patterns for rivers, surface fluxes and the open boundary conditions. The only exceptions were the atmospheric CO2 and the open boundary conditions for DIC, which varied as in the model hindcast. This last experiment was conducted to examine the influence of climate variability in ocean acidification patterns.

Hydrographic data were collected during cruise AT2613 using a CTD-rosette system aboard R/V Atlantis. We characterized the physical and chemical properties in the water column at brine pools and the ECOGIG seep study sites. The ship departed Gulfport MS on 03/29/2014 and collected samples at a variety of brine pools and ECOGIG sites before returning to Gulfport on 04/22/2014.

This data package contains water chemistry data and mahi-mahi (Coryphaena hippurus) tagging data derived from research and fishing vessels. Mahi-mahi were tagged as part of a research cruise onboard the R/V F.G. Walton Smith 16-day research cruise WS19159 (2019-06-08 to 2019-06-23). Satellite tagging data and tracks were derived from mahi-mahi tagged with Wildlife Computers Inc. pop-up satellite archival tags (PSATs) programmed to collect light, depths, temperature, and acceleration values and then transmitted via the Argos satellite network. Tag data were collected in the Gulf of Mexico and Atlantic from 2019-06-13 to 2019-08-26. The dataset includes water chemistry data (temperature, salinity, dissolved oxygen, pH, ammonia, and Polycyclic Aromatic Hydrocarbons (PAHs)) measured from onboard recovery/incubation tanks. Tagging data includes all the tagging information such as catch and releases location, fish size and condition, and associated tag number. Flow-through underway (surface water) environmental data collected for the duration of the cruise are available from Rolling Deck 2 Repository under Cruise ID WS19159.

This dataset contains CTD data collected aboard R/V Endeavor cruises EN509 and EN510 (sequential legs) using a CTD-rosette system in the Gulf of Mexico from 2012-05-26 to 2012-07-04. The physical and chemical properties in the water column at the ECOGIG seep and other study sites were characterized The dataset also includes binned profiles and bottle files.