The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data

OAS accession Detail for 0210823
<< previous |revision: 4
accessions_id: 0210823 | archive
Title: Water current profile, physical, and chemical vertical observational data at multiple levels from fixed mooring CHRP4 and CTD casts taken from NOAA research vessel R5501 in the central basin of Lake Erie, Great Lakes region from 2017-05-23 to 2019-10-10 collected by National Oceanic and Atmospheric Administration, Great Lakes Environmental Research Laboratory and the Cooperative Institute for Great Lakes Research, University of Michigan (NCEI Accession 0210823)
Abstract: The data in this record contains water current profile, physical, and chemical vertical observational data from fixed mooring CHRP4 in the central basin of Lake Erie, Great Lakes region during the summer seasons from 2017-05-23 through 2019-10-10. The approximate depth at CHRP4 is 24.3 m. Observations were collected at hourly or sub-hourly time intervals for water temperature and dissolved oxygen. The moorings are designed in a U-shape with a spar buoy and a subsurface buoy approximately 300 ft apart. The spar buoy has a surface expression float and holds the upper water column sensors. The subsurface buoy holds the subsurface float and lower water column sensors. The data files associated with this accession end with “spar” or “subsurface” to differentiate the two locations. The acoustic doppler current profiler (ADCP) was placed approximately half-way between the spar and subsurface buoy. The vertical placement of temperature and dissolved oxygen sensors, as well as the spatial location of the mooring, varied from year to year. The total depth of the mooring location is approximated from CTD casts and nautical charts. The sensors’ depth from the surface are estimated from the total depth. Onset HOBOs were deployed and collected pressure observations across all years, but provided unreliable data and were not used to correct the sensor depths. This mooring location is one of eight CHRP (Coastal Hypoxia Research Program) moorings that collected observations during the summer season from 2017-2019.

Note, CHRP4 had the same target location in 2017 and 2018. In 2019, the US Coast Guard required the mooring to be moved farther away from the shipping channel for the permit.

Data are in text and NetCDF.
Date received: 20200611
Start date: 20170523
End date: 20191010
Seanames: Great Lakes
West boundary: -81.7054
East boundary: -81.5967
North boundary: 41.9874
South boundary: 41.9477
Observation types: chemical, derived products, in situ, physical
Instrument types: ADCP, CTD, CTD - moored CTD, thermistor
Datatypes: BEAM ATTENUATION COEFFICIENT, CHLOROPHYLL - RELATIVE FLUORESCENCE, CONDUCTIVITY, CURRENT DIRECTION, CURRENT SPEED, DISSOLVED OXYGEN, PHOTOSYNTHETIC ACTIVE RADIATION (PAR), WATER TEMPERATURE
Submitter: Mason, Lacey
Submitting institution: US DOC; NOAA; OAR; Great Lakes Environmental Research Laboratory
Collecting institutions: University of Michigan, US DOC; NOAA; OAR; Great Lakes Environmental Research Laboratory
Contributing projects:
Platforms: moorings (pid: 2565), R5501 (33UB)
Number of observations:
Supplementary information:
Availability date:
Metadata version: 4
Keydate: 2020-06-12 14:24:32+00
Editdate: 2024-09-10 17:49:36+00