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:
Identification_Information:
Citation:
Citation_Information:
Originator: Phyllis Stabeno, NOAA/PMEL.EcoFOCI
Originator: Jeffery Napp, NOAA/AFSC, EcoFOCI
Originator: Terry Whitledge, UAF, Inst. of Marine Science
Publication_Date: Unpublished material
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
Description:
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
.
Purpose:

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.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050305
Ending_Date: 20070926
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
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.
Bounding_Coordinates:
West_Bounding_Coordinate: -179.00000
East_Bounding_Coordinate: -157.00000
North_Bounding_Coordinate: 63.00000
South_Bounding_Coordinate: 52.00000
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Mooring
Theme_Keyword: buoy
Theme_Keyword: Oceanography
Theme_Keyword: Physics
Theme_Keyword: Biophysical
Theme_Keyword: current velocity
Theme_Keyword: temperature
Theme_Keyword: pressure
Theme_Keyword: 70-meter isobath
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Bering Sea
Place_Keyword: southeast Bering Sea shelf
Place_Keyword: Pribilof Islands
Place_Keyword: Alaska
Place_Keyword: M2 mooring
Place_Keyword: 70-meter isobath
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: mixed-layer depth
Stratum_Keyword: surface layer
Stratum_Keyword: bottom layer
Stratum_Keyword: lower trophic
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2005
Temporal_Keyword: 2006
Temporal_Keyword: 2007
Temporal_Keyword: 60 minute data
Access_Constraints: None
Use_Constraints:
Users of data are asked to give credit to the Principal Investigators, and data-gathering and funding agencies.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Phyllis Stabeno
Contact_Organization: NOAA/PMEL/EcoFOCI
Contact_Address:
Address_Type: mailing and physical
Address: 7600 Sand Point Way NE
Address: Building 3
City: Seattle
State_or_Province: Washington
Postal_Code: 98115
Country: USA
Contact_Voice_Telephone: 206-526-6453
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:
Logical_Consistency_Report:
not applicable
Completeness_Report:
time series instruments deployed on this mooring listed by manufacturer are:
RD Instruments
wcp - workhorse ADCP(300 or 600 khz)
u,v at selected depth levels;
scalars - t,heading,pitch,roll,stDev heading, stDev pitch, stDev roll;

Data are processed using software provided by the manuracturers of the instuments along with a recent calibration file if appropriate.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
ADCP(Acoustic Doppler Current Profiler) deployments are simple subsurface moorings consisting of an RDI Workhorse ADCP in a syntatic foam float, an acoustic release, and an anchor constructed from a railroad wheel, all connected using 3/8 inch chain. The ADCP is moored within ten meters of the bottom.
Process_Step:
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.
Source_Used_Citation_Abbreviation:
see description under "Completeness Report"
Source_Used_Citation_Abbreviation:
http://www.ecofoci.noaa.gov/efoci_dataDescription.shtml
Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0
Longitude_Resolution: 0
Geographic_Coordinate_Units: Decimal degrees
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Entity_and_Attribute_Information:
Overview_Description:
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.
Entity_and_Attribute_Detail_Citation:
http://www.ecofoci.noaa.gov/efoci_dataDescription.shtml
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Metadata_Reference_Information:
Metadata_Date: 20080501
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peggy Sullivan
Contact_Organization: NOAA/PMEL/EcoFOCI and UW/JISAO
Contact_Address:
Address_Type: mailing and physical
Address: 7600 Sand Point Way NE
Address: Building 3
City: Seattle
State_or_Province: Washington
Postal_Code: 98115
Country: USA
Contact_Voice_Telephone: 206-526-6185
Contact_Electronic_Mail_Address: peggy.sullivan@noaa.gov
Contact_Electronic_Mail_Address: dave.kachel@noaa.gov
Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
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