MODIS/Terra Sea Ice Extent 5-Min L2 Swath 1km, Version 4

Federal Geographic Data Committee (FGDC) Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: D. Hall, V. Salomonson

Publication_Date: 20000901

Title: MODIS/Terra Sea Ice Extent 5-Min L2 Swath 1km, Version 4

Edition: 4

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name:

Issue_Identification:

Publication_Information:

Publication_Place: Boulder, CO U.S.A.

Publisher: National Snow and Ice Data Center (NSIDC)

Other_Citation_Details:

Online_Linkage: http://nsidc.org/data/mod29.html

Description:

Abstract:

MODIS/Terra Sea Ice Extent 5-Min L2 Swath 1km (MOD29) contains the following fields: sea ice by reflectance, sea ice by reflectance pixel quality assurance (QA), ice surface temperature (IST), IST pixel QA, sea ice by IST, combined sea ice, latitudes, and longitudes in HDF-EOS format, along with corresponding metadata. Latitude and longitude geolocation fields are at 5 km resolution, while all other fields are at 1 km resolution. Version 4 (V004) is the latest version of MOD29 data available. MODIS/Terra V004 data extend from 24 February 2000 to present. The sea ice algorithm uses a Normalized Difference Snow Index (NDSI) modified for sea ice to distinguish sea ice from open ocean, based on reflective and thermal characteristics. The only data available for Version 4 (V004) is the Golden Month, which is a sample of V004 data covering the time period 29 August 2002 (day of year 241) through 7 October 2002 (day of year 280). The Golden Month is only available by special request by contacting NSIDC User Services. Please note that NSIDC now has a complete series of Version 5 data, which is the highest version number now available and represents the best quality of data.

Purpose:

Not Available

Supplemental_Information:

REFERENCE: Earth Science Data and Information System (ESDIS). 1996. EOS Ground System (EGS) systems and operations concept. Greenbelt, MD: Goddard Space Flight Center. Hall, D. K., J. L. Foster, D. L. Verbyla, A. G. Klein, and C. S. Benson. 1998. Assessment of snow cover mapping accuracy in a variety of vegetation cover densities in central Alaska. Remote Sensing of the Environment 66:129-137. Hall, D. K., Jeffrey R. Key, Kimberly A. Casey, George A. Riggs, and Donald Cavalieri. May 2004. Sea ice surface temperature product from MODIS. IEEE Transactions on Geoscience and Remote Sensing 42:5. Hall, D. K. and J. Martinec. 1985. Remote sensing of ice and snow. London: Chapman and Hall. Hall, D. K., G. A. Riggs, and V. V. Salomonson. 1995. Development of methods for mapping global snow cover using Moderate Resolution Imaging Spectroradiometer (MODIS). Remote Sensing of the Environment 54(2):127-140. Hall, D. K., G. A. Riggs, and V. V. Salomonson. September 2001. Algorithm Theoretical Basis Document (ATBD) for the MODIS Snow-, Lake Ice- and Sea Ice-Mapping Algorithms. Greenbelt, MD: Goddard Space Flight Center. Hall, D. K. and G. A. Riggs. 2006. Assessment of errors in the MODIS suite of snow-cover products. Hydrological Processes. Hapke, B. 1993. Theory of reflectance and emittance spectroscopy. Cambridge: Cambridge University Press. Key, J. R., J. B. Collins, C. Fowler, and R. S. Stone. 1997.High latitude surface temperature estimates From thermal satellite data. Remote Sensing of the Environment 61:302-309. Key, J. R., J. A. Maslanik, T. Papakyriakou, M. C. Serreze, and A. J. Schweiger. 1994. On the validation of satellite-derived sea ice surface temperature. Arctic 47:280-287. Markham, B. L. and J. L. Barker. 1986. Landsat MSS and TM post-calibration dynamic ranges, exoatmospheric reflectances and at-satellite temperatures. EOSAT Technical Notes 1:3-8. MODIS Characterization and Support Team (MCST). 2000. MODIS Level-1B product user's guide for Level-1B Version 2.3.x Release 2. MCST Document #MCM-PUG-01-U-DNCN. Pearson II, F. 1990. Map projections: theory and applications. Boca Raton, FL: CRC Press, Inc. Riggs, G. A., D. K. Hall, and V. V. Salomonson. February 2003. MODIS sea ice products user guide. Riggs, G. A., D. K. Hall, and S. A. Ackerman. 1999. Sea ice extent and classification mapping with the Moderate Resolution Imaging Spectroradiometer Airborne Simulator. Remote Sensing of the Environment 68:152-163. Scambos, Ted A., Terry M. Haran, and Robert Massom. In press. Validation of AVHRR and MODIS Ice Surface Temperature Products Using In Situ Radiometers. Annals of Glaciology 44. Wiscombe, W. J. and S. G. Warren. 1980. A model for the spectral albedo of snow I: pure snow. Journal of the Atmospheric Sciences 37:2712-2733.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20000224

Ending_Date: 20061231

Currentness_Reference:Unknown

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0

East_Bounding_Coordinate: 180.0

North_Bounding_Coordinate: 90.0

South_Bounding_Coordinate: -90.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: GCMD PLATFORM

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 > SEA ICE > ICE TEMPERATURE

Theme_Keyword: EARTH SCIENCE > OCEANS > SEA ICE > ICE EXTENT

Theme_Keyword: EARTH SCIENCE > OCEANS > SEA ICE > ICE TEMPERATURE

Theme_Keyword: TERRA > EARTH OBSERVING SYSTEM, TERRA (AM-1)

Theme_Keyword: MODIS > MODERATE-RESOLUTION IMAGING SPECTRORADIOMETER

Theme_Keyword: SPECTRORADIOMETERS

Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM

Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM

Theme_Keyword: Antarctic

Theme_Keyword: Arctic

Theme_Keyword: Climatology

Theme_Keyword: Daac

Theme_Keyword: Ease-grid

Theme_Keyword: Ecs

Theme_Keyword: Eosdis

Theme_Keyword: Global Change

Theme_Keyword: Gridded

Theme_Keyword: Ice Surface Temperature

Theme_Keyword: Ist

Theme_Keyword: Nasa

Theme_Keyword: Nsidc

Theme_Keyword: Polar

Theme_Keyword: Remote Sensing

Theme_Keyword: Sea Ice

Theme_Keyword: Swath

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: GEOGRAPHIC REGION > GLOBAL OCEAN

Temporal:

Temporal_Keyword_Thesaurus: GCMD

Temporal_Keyword: 5 Minutes

Access_Constraints: Not Available

Use_Constraints:

Not Available

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

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

All MODIS/Terra sea ice products are considered validated - stage 1 meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program effort. Analysis of the quality of the sea ice data products is an ongoing activity. Specific information on the science quality of the sea ice data products is reported in the ScienceQualityFlagExplanation object in the CoreMetadata.0 global attribute. The URL for the quality assessment site is given in the product metadata and is linked to from the EOS Data Gateway (EDG) when ordering data. The ScienceQualityFlagExplanation is changed in response to analysis and should be checked for updated information. In the MOD29 and MOD29P1D data products there are two instances of the ScienceQualityFlagExplanation, one for sea ice determined by reflectance data and one for IST written in the metadata. Information on both is posted at that URL. The Ice Surface Temperature PixelQA and the Sea Ice by Reflectance PixelQA data fields provide additional information on algorithm results for each pixel within a spatial context, and are used as a measure of usefulness for sea ice data. QA data are stored as bit flags. QA information is extracted by reading the bits within a byte (See MODIS Sea Ice Quality Assurance Fields). The QA information tells if algorithm results were nominal, abnormal, or if other defined conditions were encountered for a pixel (Riggs, Hall, and Salomonson 2003). See MODIS Land Quality Assessment for further details.

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 1 km

Longitude_Resolution: 1 km

Geographic_Coordinate_Units: Decimal degrees

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 > 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: MOD293, MOD294

Resource_Description: MOD293, MOD294

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: HDF-EOS

Transfer_Size: 20.20 MB and 11.95 MB

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

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://nsidc.org/daac/modis/

Access_Instructions:

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...

Access_Instructions:

Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20010201

Metadata_Review_Date: 20120513

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