AARI 10-Day Arctic Ocean EASE-Grid Sea Ice Observations

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Fetterer, F.
Publication_Date: 19970615
Title: AARI 10-Day Arctic Ocean EASE-Grid Sea Ice Observations
Edition: 1
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Other_Citation_Details:
Online_Linkage: http://nsidc.org/data/NSIDC-0050
Description:
Abstract:
<span style="color: red; font-weight: bold;">NOTE: This data set has been replaced by the <a href="http://nsidc.org/data/g02176.html">Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006</a> data set.</span> These gridded ice charts represent a reformatting of information contained in another data set, the Russian Arctic and Antarctic Research Institute's (AARI) 10 Day Digital Arctic Sea Ice Charts. AARI digitized Arctic sea ice concentration and stage of development charts as part of an international data exchange program. The AARI source charts, similar to operational charts distributed by the National Ice Center describing ice type and constitution, were developed from aircraft and satellite observations for shipping purposes, and provide extremely detailed information. Such data are particularly valued in process studies tracking the growth and recession of polynyas, or for looking at the preponderance of ice at certain stages of development in a particular area. NSIDC does not maintain the operational charts, but archives the AARI digitized version. However, the Arctic and Antarctic Research Institute (AARI) 10 Day Digital Arctic Sea Ice Charts were encoded in SIGRID (Sea Ice Grid) format, which assigns numerical values to ice parameters and records them at specific lat/lon grid points. But due to the difficulties of visualizing, extracting and working with data in SIGRID, NSIDC is now providing AARI data in NSIDC's Equal Area SSM/I Earth Grid. The EASE-Grid format makes it especially easy to compare observed ice concentrations or ice types with the same parameters derived from satellite data (such as ice concentrations from passive microwave sensors). AARI sea ice data in the EASE-Grid projection are gridded at a 12.5 km resolution, for both Western (24W to 110E) and Eastern (105E to 130W) sectors . Data extend from 1953 through 1990, and are available via ftp in compressed tar format. Postscript (.ps) files depicting coverage per year are also provided with the data.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Bushuev, A. V., R. G. Barry, V. M. Smolyanitsky, and V. J. Troisi. 1994. Format to Provide Sea Ice Data for the World Climate Program (SIGRID-2). Unpublished report to the World Meteorological Organization Commission for Marine Meteorology. Environment Canada. 1989. Ice Charts: WMO Symbols for the Hatching of Total Concentration of Ice. Manual of Standard Procedures for Observing and Reporting Ice Conditions. Atmospheric Environment Service, Ottawa Ontario. p. 3-21 - 3-31. Environment Canada. 1992. Ice Terminology: Ice Codes and Symbols, Egg Code. MANIS, Manual of Ice Services. Atmospheric Environment Service. Ottawa, Ontario. sect. A.3. Kokaly, Raymond F. 1996. Format for Gridded Sea Ice Information (SIGRID). Special Report to the National Snow and Ice Data Center, Boulder, Colorado. Kokaly, Raymond F. 1996. An Evaluation of the Results from Using Nearest Neighbor and Area Min/Max Resampling Methods to Regrid AARI Digitized Sea Ice Charts to EASE-Grid. Special Report to theNational Snow and Ice Data Center, Boulder, Colorado. Thomas Thompson. 1981. Proposed Format for Gridded Sea Ice Information (SIGRID). Unpublished report prepared for the World Climate Programme.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19530101
Ending_Date: 19901230
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -130.0
East_Bounding_Coordinate: 105.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: 45.0
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -24.0
East_Bounding_Coordinate: 110.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: 68.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE EXTENT
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE EXTENT
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > ICE EXTENT
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA ICE > ICE EXTENT
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE GROWTH/MELT
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE TYPES
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA ICE > ICE TYPES
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA ICE > POLYNYAS
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE AGE
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA ICE > SEA ICE AGE
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE CONCENTRATION
Theme_Keyword: DIGITIZER
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: Arctic
Theme_Keyword: Ice Charts
Theme_Keyword: Ice Form
Theme_Keyword: North Polar Basin
Theme_Keyword: Sea Ice Concentration
Theme_Keyword: Sea Ice Extent
Theme_Keyword: Sea Ice Form
Theme_Keyword: Sea Ice Stage Of Development
Theme_Keyword: Stage Of Development
Theme_Keyword: Greenland Sea
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: OCEANS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > ARCTIC OCEAN > BARENTS SEA
Place_Keyword: OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
Place_Keyword: OCEAN > ARCTIC OCEAN > BEAUFORT SEA
Place_Keyword: OCEAN > ARCTIC OCEAN > CHUKCHI SEA
Place_Keyword: OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: 10 Day
Access_Constraints: These data are freely available to the public.
Use_Constraints:
None.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: NSIDC USER SERVICES
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
It is impossible to assess errors that might have occurred in translating ice observations to the original operational charts and to SIGRID files, since these steps were performed at AARI. However, AARI estimates that ice edge boundaries are generally accurate to between 2 and 10 km under typical ice reconnaissance conditions, and to within 50 km under the worst conditions. Quality control routines assessed the 'correctness' of the AARI coding (i.e., checked whether the AARI implementation of SIGRID matched the published standard). Few errors were found in AARI's coding of the files.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 12.5 km
Longitude_Resolution: 12.5 km
Geographic_Coordinate_Units: Decimal degrees
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NSIDC_DAAC > NSIDC Distributed Active Archive Center
Contact_Person: NSIDC USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NSIDC_NOAA > National Oceanic and Atmospheric Administration at the National Snow and Ice Data Center
Contact_Person: NSIDC NOAA USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NSIDC > National Snow and Ice Data Center
Contact_Person: NSIDC USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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: NSIDC-0050
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/daac/index.html
Access_Instructions:
DATA CENTER URL
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/noaa/
Access_Instructions:
DATA CENTER URL
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/data/seaice/
Access_Instructions:
Sea Ice Products at NSIDC
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/noaa/gdsidb/
Access_Instructions:
Global Digital Sea Ice Data Bank (GDSIDB)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/data/g02176.html
Access_Instructions:
Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/data/ease/
Access_Instructions:
All About EASE-Grid
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/data/g02172.html
Access_Instructions:
National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 19970615
Metadata_Review_Date: 20140716
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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