Long-term observations on the Bering Sea shelf: biophysical mooring at site 4 as a sentinel for ecosystem change (NPRB Projects 203, 315, 410, 517, 602)

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

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Publication_Date: Unpublished material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 4 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 M4 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

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: project_number:B52

Theme_Keyword: data_url:<http://data.eol.ucar.edu/codiac/dss/id=245.B52-003>

Theme_Keyword: archive_url:<http://www.eol.ucar.edu/projects/bsierp>

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Bering Sea

Place_Keyword: southeast Bering Sea shelf

Place_Keyword: Pribilof Islands

Place_Keyword: Alaska

Place_Keyword: M4 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)

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 manufacturers of the instruments 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

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0

Longitude_Resolution: 0

Geographic_Coordinate_Units: Decimal degrees

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Time series data from mooring site M4 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>

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Center for Atmospheric Research

Contact_Person: Earth Observing Laboratory

Contact_Address:

Address_Type: mailing and physical

Address: 3450 Mitchell Lane

City: Boulder

State_or_Province: CO

Postal_Code: 80301

Country: USA

Contact_Voice_Telephone: 303-497-8154

Contact_Electronic_Mail_Address: codiac@ucar.edu

Contact_Electronic_Mail_Address: stott@ucar.edu

Distribution_Liability:

No warranty expressed or implied is made regarding the accuracy or utility of the data, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with the data. The NCAR and NPRB shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: XLS

File_Decompression_Technique: No compression applied

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://beringsea.eol.ucar.edu>

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII

File_Decompression_Technique: No compression applied

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://beringsea.eol.ucar.edu>

Fees: None

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