SEDNA: Sea ice Experiment - Dynamic Nature of the Arctic

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Identification Information:

Dataset Identifier:

G02200

Citation:

Citation Information:

Originator: J. Hutchings, C. Geiger, J. Richter-Menge, A. Roberts, M. Doble, R. Forsberg, K. Giles, C. Haas, S. Hendriks, C. Khambhamettu, S. Laxon, T. Martin, M. Pruis, M. Thomas, P. Wadhams, D. Wilkinson, J. Zwally
Publication Date: 20110519
Title: SEDNA: Sea ice Experiment - Dynamic Nature of the Arctic
Publication Information:
Publication Place: Fairbanks, Alaska USA
Publisher: IARC: International Arctic Research Center, UAF
Online Linkage: http://nsidc.org/data/g02200.html
Online Linkage: http://dx.doi.org/10.7265/N5KK98PH

Description:

Abstract:

The Sea Ice Experiment - Dynamic Nature of the Arctic (SEDNA) is an international collaborative effort to improve the understanding of the interaction between sea ice dynamics and Arctic climate. It was also the first International Polar Year 2007-2008 field project.

The SEDNA data portal provides access to many and varied data sets from the diverse set of campaign participants. The data portal holds 37 entries from remote sensing to in situ measurements collected during the ice camp in March and April 2007. This data collection is distributed by the International Arctic Research Center (IARC) at the University of Alaska Fairbanks (UAF). NSIDC maintains the metadata for this data collection, so the data are easier to find through the NSIDC data catalog and those catalogs with which NSIDC shares metadata. This summary and metadata are accurate as of June 2011. The UAF archive site may have more recent data updates and publications, please visit their site for the most up-to-date information.

The mass balance of sea ice and the evolution of sea ice thickness distribution is a key component of the Arctic system. It is controlled by thermodynamic ice growth and melt, mechanical redistribution through ridging and rafting, and transport. The SEDNA experiment was designed in a regional Lagrangian frame of reference and tracked the evolution of a region of ice surrounding the Applied Physics Laboratory Ice Station (APLIS) 2007 ice camp in an effort to evaluate the role of mechanical redistribution on ice thickness distribution. The SEDNA data collection is unique in that several ice thickness data sets were inter-calibrated and coordinated with monitoring of the ice pack strain-rate (horizontal deformation) and measurements of internal ice stress. This experiment was designed to improve our understanding of the relationship between sea ice thickness and dynamics and to investigate the stress and strain-rate relationships with a comprehensive suite of spatio-temporal coincident observations.

Measurements were made with the aim of resolving the time evolving ice thickness distribution in the vicinity of the ice camp, to map ice pack deformation (strain-rate), and track strain-rate and internal ice stress in time. This has required a detailed inter-comparison of ice thickness measurements from a number of sources including submarine upward looking sonar (ULS) (Peter Wadhams), AUV multi-beam ULS (Peter Wadhams and Martin Doble), airborne LIDAR (Rene Forsberg), Helicopter borne electromagnetic induction (EMI) (Christian Haas), and in situ snow and ice measurements with drill and EM-31 soil surveyor (Cathy Geiger and Jackie Richter-Menge). Sea ice deformation was mapped in near-real time from analysis of RADARSat-1 ScanSAR-B by the Map of Moving Topography method (Mani Thomas, Chandra Kambhattmettu, and Cathy Geiger), and high temporal sampling was achieved with an array of GPS drifting buoys (Jenny Hutchings). Matt Pruis used GPS buoys to measure deformation of single leads. Ice stress and mass balance were measured with CRREL stress buoys (Jackie Richter-Menge). Additional measurements include a 3-m weather station (Andrew Roberts), CTD profiles every six hours (Jeremy Wilkinson), downward looking Acoustic Doppler Current Profiler (ADCP), and met-buoys (Ignatius Rigor).

Data are generally available in three formats: the original format, netCDF, and ASCII. The original version is not always well documented. The netCDF version includes carefully collected documentation placed in the header fields of the netCDF file. Often, data are also available in a separate ASCII file as columns of data concatenated behind the netCDF header information in plain text form.

SEDNA is supported by the NSF Grant "Collaborative Research: Detailed Investigation of the Dynamic Component of Sea Ice Mass Balance" (OPP ARC 0612527 (UAF), 0611991 (CRREL), and 0612105 (University of Delaware)).

Purpose: scientific research

Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 20070201
Ending Date: 20070630

Currentness Reference: publication date

Status:

Progress: Complete
Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

 

West Bounding Coordinate: -170°
East Bounding Coordinate: -130°
North Bounding Coordinate: 76°
South Bounding Coordinate: 70°

Keywords:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Cryosphere Sea Ice Sea Ice Mass Balance
Theme Keyword: EARTH SCIENCE Cryosphere Sea Ice Ice Deformation
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Ice Depth/Thickness Distribution
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Ice Motion
Theme Keyword: EARTH SCIENCE Oceans Sea Ice Sea Ice Dynamics
Theme Keyword: EARTH SCIENCE Oceans Sea Ice Ice Deformation

Theme:

Theme Keyword Thesaurus: None
Theme Keyword:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: ADCP Acoustic Doppler Current Profiler
Theme Keyword: CTD Conductivity, Temperature, Depth
Theme Keyword: GPR Ground Penetrating Radar
Theme Keyword: GPS Global Positioning System
Theme Keyword: ICE STRESS SENSORS
Theme Keyword: LIDAR Light Detection and Ranging
Theme Keyword: SAR Synthetic Aperture Radar
Theme Keyword: THERMISTORS
Theme Keyword: UPWARD LOOKING SONAR
Theme Keyword: VISUAL OBSERVATIONS

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: AIRCRAFT
Theme Keyword: AUVS Autonomous Underwater Vehicles
Theme Keyword: BUOYS
Theme Keyword: HELICOPTER
Theme Keyword: METEOROLOGICAL STATIONS
Theme Keyword: SATELLITES
Theme Keyword: SUBMARINE

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: climatologyMeteorologyAtmosphere

Theme:

Theme Keyword Thesaurus: None
Theme Keyword: climate variability
Theme Keyword: Cryosphere
Theme Keyword: DRIFTING STATIONS
Theme Keyword: electromagnetic induction (EMI)
Theme Keyword: Field Camps
Theme Keyword: Ice Deformation
Theme Keyword: ice dynamics
Theme Keyword: Ice Growth
Theme Keyword: Ice Melt
Theme Keyword: Ice Thickness Distribution
Theme Keyword: IN-SITU
Theme Keyword: Ocean Drifting Station
Theme Keyword: Physical Oceanography
Theme Keyword: Sea Ice
Theme Keyword: sea ice camps
Theme Keyword: sea ice mass balance
Theme Keyword: Sea Ice Surface Elevation

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Ocean Arctic Ocean Beaufort Sea Perrenial-seasonal ice boundary

Access Constraints:

None

Use Constraints:

No use constraints. The data are freely available to anyone who wants to use it. If data are used in a publication, please cite using the formal data citation.

Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: Bruce Elder
Contact Organization: Cold Regions Research and Engineering Laboratory

Contact Address:

Address Type: mailing
Address:
  • 72 Lyme Rd.
City: Hanover
State or Province: NH
Postal Code: 03755-1290
Country: USA

Contact Voice Telephone: Unknown
Contact Electronic Mail Address: Bruce.C.Elder@erdc.usace.army.mil

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Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: National Snow and Ice Data Center
Contact Person: NSIDC User Services

Contact Address:

Address Type: mailing
Address:
  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Resource Description:

G02200

Distribution Liability:

NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

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Metadata Reference Information:

Metadata Date:

20130312

Metadata Review Date:

20130312

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center

Contact Address:

Address Type: mailing
Address:
  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Metadata Standard Name:

FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

Metadata Standard Version:

FGDC-STD-012-2002

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Metadata Views

FGDC Text-Only

Federal Geographic Data Committee (FGDC) in plain text

FGDC XML

Federal Geographic Data Committee (FGDC) in Extensible Markup Language (XML)

DIF HTML

NASA Global Change Master Directory (GCMD) Directory Interchange Format (DIF)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata