Gulf of Mexico Hypoxia Watch Bottom Dissolved Oxygen Contours for June and July SEAMAP Cruise of 2009

Metadata Updated: May 16, 2017

The NOAA Hypoxia Watch project provides near-real-time, web-based maps of dissolved oxygen near the sea floor over the Texas-Louisiana continental shelf during a period that extends from early June to mid-July. The NOAA National Marine Fisheries Service Mississippi Laboratories at Pascagoula and Stennis Space Center and the NOAA National Coastal Data Development Center (NCDDC) at Stennis Space Center began the Hypoxia Watch project in 2001. Scientists aboard the NOAA Research Vessel Oregon II measure seawater properties, such as water temperature, salinity, chlorophyll, and dissolved oxygen at each of approximately 240 locations as the Oregon II cruises the waters south of Pascagoula, MS and then makes its way from Brownsville, Texas, to the mouth of the Mississippi River. A scientist aboard the ship processes the measurements from electronic dissolved oxygen sensors, checks the measurements periodically with chemical analyses of the seawater, then sends the data by e-mail to NCDDC at Stennis Space Center approximately every three to five days. Physical Scientists at NCDDC transform the dissolved oxygen measurements into contour maps, which identify areas of low oxygen, or hypoxia. During the 6-week cruise, as the data is received from the ship, NCDDC generates new maps and immediately publishes them on the web. The first map will usually cover an area off the Mississippi coast, successive maps will add areas of the continental shelf from Brownsville to Galveston, and the final map will usually cover the entire Texas-Louisiana-Mississippi coast. The 2009 summer cruise extended eastward to areas off the coast of Alabama and Florida during Leg 3. Maps are published every three to five days from approximately June 10 to July 20.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date May 8, 2017
Metadata Updated Date May 16, 2017
Data Update Frequency irregular

Additional Metadata

Resource Type Dataset
Metadata Created Date May 8, 2017
Metadata Updated Date May 16, 2017
Publisher NOAA/NESDIS/NODC/NCDDC-National Coastal Data Development Center (Point of Contact)
Unique Identifier Gulf of Mexico Hypoxia Watch Bottom Dissolved Oxygen Contours for June and July SEAMAP Cruise of 2009
NOAA/NESDIS/NODC/NCDDC-National Coastal Data Development Center
Maintainer Email
Public Access Level public
Data Update Frequency irregular
Bureau Code 006:48
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id c921b97c-ef16-440c-9281-51599aab5ffd
Harvest Source Id 0836a94a-b3c8-4190-a145-bddc06458b2c
Harvest Source Title Commerce Non Spatial Data.json Harvest Source
Language en-US
Data Last Modified 2012-11-15T00:00:00
Program Code 006:059
Source Datajson Identifier True
Source Hash 7658b366aeec2ff1cdb4716979d8bc351912a5a1
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -97.36, 25.99, -86.37, 25.99, -86.37, 30.35, -97.36, 30.35, -97.36, 25.99}
Temporal 2009-06-08T00:00:00/2009-07-17T00:00:00

Didn't find what you're looking for? Suggest a dataset here.