"NEGOM CTD - n2l06s17.nc - 28.83N, 87.05W - 1998-05-12"


The Northeastern Gulf of Mexico Physical Oceanography Program (NEGOM) is supported by the Minerals Management Service (MMS) of the U.S. Department of the Interior. Through a contract between MMS and the Texas A&M Research Foundation, several components of the Texas A&M University System are conducting the Chemical Oceanography and Hydrography study of NEGOM (NEGOM-COH). This report covers activities from October 1997 through June 1998. Data were collected from hydrographic and acoustic Doppler current profiler (ADCP) surveys conducted in the Gulf of Mexico over the continental shelf and upper slope between the Mississippi delta and Tampa Bay in water depths of 10 to 1000 m. Additionally, historical and concurrent data from other programs in this region were collected. Two hydrographic/ADCP surveys, N1 and N2, were conducted with 94 and 98 hydrographic sampling stations and with 80 and 97 expendable bathythermograph stations on respective cruises. Each survey also included continuous ADCP measurements along the cruise track. At each hydrographic sampling station continuous profiles were made of conductivity, temperature, pressure, downwelling irradiance, fluorescence, and light transmission. Up to twelve water samples were taken at each station and analyzed for dissolved oxygen and six nutrients: nitrate, nitrite, phosphate, silicate, ammonium, and urea. At 51 stations on cruise N1 and 61 on N2, water samples were filtered and analyzed for phytoplankton pigments at the surface and from the chlorophyll maximum and the low light regime immediately below it. Pigments were determined using high performance liquid chromatography. At 60 stations on each cruise, water samples were filtered and analyzed for particulate matter concentrations at surface, middle, and bottom water depths and for particulate organic carbon concentrations at surface and bottom water depths. Bottle salinity was measured at every station on the first cruise and at the shallowest and deepest stations on each cross-shelf line on the second. The instrumentation as well as calibration and sampling procedures are described in this report. The collected data were subjected to stringent quality assurance/quality control procedures.

Data and Resources

Metadata Date

Metadata Tags

GCMD Keywords

CF Standard Names

Online Access

OPeNDAP (DAP Client Access)

These data are available for access with an OPeNDAP client

ERDDAP (DAP Client Access)

These data are available for access with an ERDDAP client

Distribution Formats
  • OPeNDAP (Version: DAP/2.0 )
Distributor OCEAN.TAMU
Point of Contact Marion Stoessel, Dr. Matthew K. Howard
OCEAN.TAMU
mstoessel@ocean.tamu.edu, mkhoward@tamu.edu
Background Information (Background information from the source)
Originator Marion Stoessel, Dr. Matthew K. Howard
OCEAN.TAMU
mstoessel@ocean.tamu.edu, mkhoward@tamu.edu
Background Information (Background information from the source)
contributor Worth D. Nowlin,Jr., Ann E. Jochens, Douglas Biggs, Norman L. Guinasso,Jr., Matthew K. Howard, M.C. Kennicutt II, Robert O. Reid
wnowlin@tamu.edu, ajochens@tamu.edu, d-biggs@tamu.edu, guinasso@tamu.edu, mkhoward@tamu.edu, m-kennicutt@tamu.edu,
Dataset Point of Contact Felimon Gayanilo
GCOOS
+1 361-825-3454
data@gcoos.org
General Documentation
Associated Documentation OCEAN.TAMU
Date(s) creation: 2024-07-26
creation: 2024-07-26
creation: 2024-07-26
creation: 2024-07-26
Use Limitations Unrestricted use and distribution
Time Period 1998-05-12T14:56:00Z to 1998-05-12T14:56:00Z
Spatial Bounding Box Coordinates N: 28.8272° S: 28.8272° E: -87.0527° W: -87.0527°
Theme keywords Uncategorized
  • acoustic
  • active
  • adcp
  • and light transmission
  • assurance
  • available
  • backscattering
  • bathythermograph
  • beam
  • bird
  • bottomdepth
  • chemical
  • conductivity
  • control
  • crs
  • current
  • currents
  • data
  • decent
  • density
  • descentRate
  • doppler
  • downwelling
  • downwelling irradiance
  • earth
  • eastern
  • egmex
  • electrical
  • expendable bathythermograph
  • expendible
  • fluorescence
  • fluoresence
  • gom
  • gulf
  • gulf of mexico
  • hydrography
  • identifier
  • instrument
  • instrument1
  • instrument2
  • irradiance
  • mexico
  • n2l06s1
  • northeastern
  • ocean
  • ocean.tamu
  • oceanography
  • oceans
  • optical
  • optical properties
  • optics
  • package
  • par
  • parv
  • percent
  • photon
  • photosynthetic
  • photosynthetically
  • plus
  • potential
  • potentialTemperature
  • practical
  • pressure
  • profile
  • profiler
  • properties
  • quality
  • radiance
  • radiation
  • rate
  • relative
  • salinity
  • sbe
  • sbe-911-plus
  • science
  • sea
  • sea-bird
  • seawater
  • sigma
  • sigma-t
  • sigmat
  • spherical
  • study
  • temperature
  • total
  • transmission
  • velocity
  • volts
  • water
  • xbt

GCMD Science Keywords
  • Earth Science > Oceans > Salinity/Density > Salinity
  • Earth Science > Oceans > Salinity/Density > Density
  • Earth Science > Oceans > Salinity/Density > Conductivity
  • Earth Science > Oceans > Ocean Temperature > Water Temperature
  • Earth Science > Oceans > Ocean Temperature > Potential Temperature
  • Earth Science > Oceans > Ocean Pressure > Water Pressure
  • Earth Science > Oceans > Ocean Optics > Radiance
  • Earth Science > Oceans > Ocean Optics > Photosynthetically Active Radiation

CF Standard Name Table v29
  • time
  • latitude
  • longitude
  • depth
  • sea_water_pressure
  • depth
  • sea_water_temperature
  • sea_water_potential_temperature
  • sea_water_electrical_conductivity
  • sea_water_practical_salinity
  • sea_water_sigma_t
  • package_decent_rate
  • beam_transmission_in_sea_water
  • downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water
  • downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water
  • relative_fluoresence
  • relative_backscattering

Project keywords Uncategorized
  • OCEAN.TAMU

Use Constraints Unrestricted use and distribution
Lineage Statement Lineage statement not available.
Platforms
platform R/V GYRE
Ingestion Attributes
Instrument Attributes
Attribution Information
contributor_email wnowlin@tamu.edu, ajochens@tamu.edu, d-biggs@tamu.edu, guinasso@tamu.edu, mkhoward@tamu.edu, m-kennicutt@tamu.edu,
contributor_name Worth D. Nowlin,Jr., Ann E. Jochens, Douglas Biggs, Norman L. Guinasso,Jr., Matthew K. Howard, M.C. Kennicutt II, Robert O. Reid
creator_phone +1-979-845-7662, +1-979-862-4169
infoUrl http://ocean.tamu.edu//people/researchpersonnel/stosselmarion, https://ocean.tamu.edu//people/researchpersonnel/howardmatthewk
CF related
standard_name_vocabulary CF Standard Name Table v29