Long-term observations on the Bering Sea shelf: biophysical mooring at site 2 as a sentinel for ecosystem change (NPRB Projects 203, 315, 410, 517, 602)
Metadata:
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Identification_Information:
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Citation:
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Citation_Information:
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Originator: Phyllis Stabeno, NOAA/PMEL.EcoFOCI
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Originator: Jeffery Napp, NOAA/AFSC, EcoFOCI
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Originator: Terry Whitledge, UAF, Inst. of Marine Science
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Publication_Date: Unpublished material
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Title:
Long-term observations on the Bering Sea shelf: biophysical mooring at site 2 as a sentinel for ecosystem change (NPRB Projects 203, 315, 410, 517, 602)- Geospatial_Data_Presentation_Form: tabular digital data
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Description:
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Abstract:
- Biophysical measurements have been made at mooring Site 2 (56.88N, 164.03W) almost continuously since 1995, providing the longest near continuous time-series of biophysical variables on the Bering Sea shelf. A series of moorings have also been deployed at Site 4 (57.85N, 168.87W) since 1995, providing almost six years of more sporadic data. In addition, another series of moorings have been deployed at Site 5 (59.90N, 171.70W) from 2004 to present. Added to the biophysical data collected by the moorings, water property measurements have been made at locations around the moorings and along the 70-m transect since 1995. Such long-term observations provide critical data that allow characterizations of interannual variability, quantification of regime shifts and climate change. This project partially funds continued measurements at Sites 2, 4, and 5, together with water samples and plankton samples around all mooring sites and along the monitoring line
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Purpose:
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Time series measurements of currents and other water properties provide necessary metrics for describing this area as well as a background for observing anomolous events as they occur.
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Time_Period_of_Content:
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Time_Period_Information:
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Range_of_Dates/Times:
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Beginning_Date: 20050305
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Ending_Date: 20070926
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Currentness_Reference:
- ground condition
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Status:
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Progress: Complete
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Maintenance_and_Update_Frequency: As needed
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Spatial_Domain:
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Description_of_Geographic_Extent:
- Mooring M2 is located on the southeast Bering Sea shelf near the 70-meter isobath. CTD data are collected over various areas of the southeast Bering Sea shelf during mooring cruises. Casts are taken near the moorings and at other areas of interest, including the Pribilof Islands, near the Aleutian Islands, and along the 70-meter isobath.
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Bounding_Coordinates:
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West_Bounding_Coordinate: -179.00000
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East_Bounding_Coordinate: -157.00000
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North_Bounding_Coordinate: 63.00000
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South_Bounding_Coordinate: 52.00000
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Keywords:
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Theme:
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Theme_Keyword_Thesaurus: None
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Theme_Keyword: Mooring
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Theme_Keyword: buoy
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Theme_Keyword: Oceanography
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Theme_Keyword: Physics
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Theme_Keyword: Biophysical
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Theme_Keyword: nitrate
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Theme_Keyword: chlorophyll
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Theme_Keyword: PAR(photosynthetically active radiation)
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Theme_Keyword: oxygen
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Theme_Keyword: fluorescence
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Theme_Keyword: current velocity
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Theme_Keyword: temperature
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Theme_Keyword: conductivity
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Theme_Keyword: salinity
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Theme_Keyword: pressure
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Theme_Keyword: turbulence
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Theme_Keyword: wind velocity
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Theme_Keyword: air temperature
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Theme_Keyword: barometric pressure
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Theme_Keyword: relative humidity
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Theme_Keyword: shortwave solar radiation
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Theme_Keyword: mixed layer
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Theme_Keyword: 70-meter isobath
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Place:
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Place_Keyword_Thesaurus: None
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Place_Keyword: Bering Sea
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Place_Keyword: southeast Bering Sea shelf
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Place_Keyword: Pribilof Islands
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Place_Keyword: Alaska
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Place_Keyword: M2 mooring
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Place_Keyword: 70-meter isobath
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Stratum:
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Stratum_Keyword_Thesaurus: None
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Stratum_Keyword: mixed-layer depth
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Stratum_Keyword: surface layer
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Stratum_Keyword: bottom layer
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Stratum_Keyword: lower trophic
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Temporal:
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Temporal_Keyword_Thesaurus: None
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Temporal_Keyword: 2005
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Temporal_Keyword: 2006
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Temporal_Keyword: 2007
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Temporal_Keyword: 10 - 60 minute data
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Access_Constraints: None
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Use_Constraints:
- Users of data are asked to give credit to the Principal Investigators, and data-gathering and funding agencies.
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Point_of_Contact:
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Contact_Information:
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Contact_Person_Primary:
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Contact_Person: Phyllis Stabeno
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Contact_Organization: NOAA/PMEL/EcoFOCI
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Contact_Address:
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Address_Type: mailing and physical
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Address: 7600 Sand Point Way NE
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Address: Building 3
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City: Seattle
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State_or_Province: Washington
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Postal_Code: 98115
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Country: USA
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Contact_Voice_Telephone: 206-526-6453
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Data_Set_Credit:
- EcoFOCI project (NOAA/PMEL)
University of Washington JISAO
North Pacific Research Board (Projects 203, 315, 410, 517, 602)
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Data_Quality_Information:
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Logical_Consistency_Report:
- not applicable
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Completeness_Report:
- Time series instruments deployed on this mooring listed by manufacturer. Data are processed using software provided by the manuracturers of the instuments along with a recent calibration file if appropriate.
=>Aanderaa Data Instruments [an9 - rcm9 current meter; units: u,v,t,(p,c,turbidity)]
http://www.aanderaa.com/
=>Sea-Bird Electronics, Inc.,[ sc -sbe16 data logger, temp,cond,[pres,fluorometer]; s37 - sbe37 microcat temp,cond,[pres]; s39 - sbe39 temperature recorder temp,[pres]]
http://www.seabird.com/
=>WetLabs, Inc [ecf - Ecofluorometer; fluorometer (volts)]
http://www.wetlabs.com/
=>PMEL(Pacific Marine Environmental Labs) [ mt - mini temperature recorder, units:T]
http://www.pmel.noaa.gov/
=>Coastal Environmental Systems [wpak-WeatherPak, units: wu,wv,relH,airT,bp,shortave-Radiation,[t,c]]
http://www.coastalenvironmental.com/
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Lineage:
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Methodology:
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Methodology_Type: Field
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Methodology_Description:
- EcoFOCI generally deploys moorings at two times of year, spring and fall. Spring moorings are deployed after ice is no longer a threat so a surface toroid with accompanying meteorological sensors is part of this mooring. Fall moorings occur after September and generally are kept out over the winter. As such, they contain no instruments above 11 meters depth in order to avoid potential damage by ice. For both spring and fall moorings, instruments are fastened to the mooring at fixed depths by wire rope and chain and anchored to the bottom by railroad wheels. An acoustic release attaches the instrument string to the railroad wheel anchor, allowing the mooring to be released by transmission of the key acoustic signal.
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Process_Step:
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Process_Description:
- Data are processed using recommended software from the manufacturer along with recent calibrations. CTD casts done at deployment, recovery, and occassionally mid-mooring times are used to correct time series variables. If data are at all questionable, tidal analysis is used to find the amplitudes of major tidal components of current meter data and these are compared to known components in the near proximity as a quality check of velocity data. Time series values are visually inspected for singleton spikes which are removed when appropriate. Missing data value for all variables is 1.0E+35. Instruments are setup so that the midpoint of the sampling interval falls on an even hour. If the sampling startup could not be set on an even hour or if the clock drifted, data is later interpolated to begin on an even hour and be evenly spaced with initial even delta-t in time.
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Source_Used_Citation_Abbreviation:
- see description under "Completeness Report"
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Source_Used_Citation_Abbreviation:
- http://www.ecofoci.noaa.gov/efoci_dataDescription.shtml
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Process_Date: Unknown
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Spatial_Reference_Information:
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Horizontal_Coordinate_System_Definition:
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Geographic:
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Latitude_Resolution: 0
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Longitude_Resolution: 0
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Geographic_Coordinate_Units: Decimal degrees
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Entity_and_Attribute_Information:
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Overview_Description:
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Entity_and_Attribute_Overview:
- Time series data from mooring site M2 extending from 05-Mar-2003 to 26-Sep-2007. Instruments are internally recording and placed at various depths on a line anchored to the bottom. Measured variables include current velocity, temperature, conductivity, pressure, fluorometer voltage, and ecofluorometer voltage of the water. Spring and summer deployments generally have a surface buoy with meteorological instruments that measure wind velocity, air temperature, barometric pressure, relative humidity and shortwave solar radiation.
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Entity_and_Attribute_Detail_Citation:
- http://www.ecofoci.noaa.gov/efoci_dataDescription.shtml
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Metadata_Reference_Information:
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Metadata_Date: 20080501
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Metadata_Contact:
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Contact_Information:
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Contact_Person_Primary:
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Contact_Person: Peggy Sullivan
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Contact_Organization: NOAA/PMEL/EcoFOCI and UW/JISAO
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Contact_Address:
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Address_Type: mailing and physical
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Address: 7600 Sand Point Way NE
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Address: Building 3
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City: Seattle
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State_or_Province: Washington
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Postal_Code: 98115
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Country: USA
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Contact_Voice_Telephone: 206-526-6185
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Contact_Electronic_Mail_Address:
peggy.sullivan@noaa.gov
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Contact_Electronic_Mail_Address:
dave.kachel@noaa.gov
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Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
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Metadata_Standard_Version: FGDC-STD-001-1998
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