Entry_ID: MYD29E1D
Entry_Title: MODIS/Aqua Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day
Group: Data_Set_Citation
   Dataset_Creator: Hall, D. K. and G. A. Riggs. 
   Dataset_Title: MODIS/Aqua Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day
   Dataset_Release_Date: 2015-05-27
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center
   Version: 6
   Online_Resource: http://nsidc.org/data/myd29e1d.html
   Dataset DOI: http://dx.doi.org/10.5067/MODIS/MYD29E1D.006
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Dorothy
   Middle_Name: K.
   Last_Name: Hall
   Group: Contact_Address
      Address: NASA Goddard Space Flight Center (GSFC)
      Address: National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC)
      Address: Mail stop 614.1
      City: Greenbelt
      Province_or_State: MD
      Postal_Code: 20771
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: George
   Middle_Name: A.
   Last_Name: Riggs
   Email: George.A.Riggs@nasa.gov
   Phone: 1 301 614-5650 
   Group: Contact_Address
      Address: NASA Goddard Space Flight Center (GSFC)
      Address: Science Systems and Applications, Inc.
      Address: NASA Goddard Space Flight Center (GSFC)
      Address: Science Systems and Applications, Inc.
      Address: Code 614.1
      City: Greenbelt
      Province_or_State: MD
      Postal_Code: 20771
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Sea Ice
   Variable_Level_1: Ice Extent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Sea Ice
   Variable_Level_1: Ice Temperature
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
ISO_Topic_Category: Imagery/Base Maps/Earth Cover
Keyword: Antarctic
Keyword: Arctic
Keyword: DAAC
Keyword: ECS
Keyword: EOSDIS
Keyword: Global Change
Keyword: Gridded
Keyword: Ice Surface Temperature
Keyword: IST
Keyword: MODIS
Keyword: NASA
Keyword: NSIDC
Keyword: Polar
Keyword: Polar Sea Ice
Keyword: Remote Sensing
Keyword: Sea Ice
Keyword: Sea Ice Extent
Sensor_Name: MODIS > Moderate-Resolution Imaging Spectroradiometer
Source_Name: AQUA > Earth Observing System, AQUA
Group: Temporal_Coverage
   Start_Date: 2002-07-04
End_Group
Data_Set_Progress: in work
Group: Spatial_Coverage
   Southernmost_Latitude: -90
   Northernmost_Latitude: 90
   Westernmost_Longitude: -180
   Easternmost_Longitude: 180
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: GLOBAL OCEAN
End_Group
Group: Data_Resolution
   Latitude_Resolution: 4 km
   Longitude_Resolution: 4 km
   Temporal_Resolution: 1 day
End_Group
Group: Quality

   All MODIS/Aqua sea ice products are considered validated at stage two, meaning 
   that product accuracy has been assessed over a widely distributed set of 
   locations and time periods via several ground truth and validation efforts. 
   Quality indicators for MODIS sea ice data can be found in the following two 
   places:

       * AutomaticQualityFlag and the ScienceQualityFlag metadata objects and 
   their corresponding explanations: AutomaticQualityFlagExplanation and 
   ScienceQualityFlagExplanation located in the CoreMetadata.0 global attributes  
   * Custom local attributes associated with each SDS, for example Ice Surface 
   Temperature.

   No automated quality assessment is done in this algorithm. All QA is inherited 
   from the MOD29 product. These quality indicators are generated during 
   production or in post-production scientific and quality checks of the data 
   product. For more information on local and global attributes, go to one of the 
   following links:

       * MOD29E1D and MYD29E1D Local Sea Ice Attributes, Version 5     * MOD29E1D 
   and MYD29E1D Global Sea Ice Attributes, Version 5

   The AutomaticQualityFlag is automatically set according to conditions for 
   meeting data criteria in the sea ice algorithm. In most cases, the flag is set 
   to either Passed or Suspect, and in rare instances, it may be set to Failed. 
   Suspect means that a significant percentage of the data were anomalous and 
   that further analysis should be done to determine the source of anomalies. The 
   AutomaticQualityFlagExplanation contains a brief message explaining the reason 
   for the setting of the AutomaticQualityFlag. The ScienceQualityFlag and the 
   ScienceQualityFlagExplanation maybe updated after production, either after an 
   automated QA program is run or after the data product is inspected by a 
   qualified scientist. Content and explanation of this flag are dynamic so it 
   should always be examined if present in the external metadata file. A sampling 
   of products will be inspected. Random sampling or support of specific events, 
   such as field campaigns, may also be conducted.

   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 QA 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 MYD29E1D data product, there are four 
   instances of the ScienceQualityFlagExplanation, one for each of the two 
   parameters, sea ice determined by reflectance data and ice surface 
   temperature, in each of the northern and southern grids written in the metadata.

   See the MODIS Land Quality Assessment Web site for further details.

End_Group
Data_Set_Language: English
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: NASA NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center
   Data_Center_URL: http://nsidc.org/daac/index.html
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 x
      Fax: 1 303  492-2468 x
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 0.5 - 6.0 MB
   Distribution_Format: HDF-EOS
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 0.5 - 6.0 MB
   Distribution_Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
End_Group
Group: Reference

   Earth Science Data and Information System (ESDIS). 1996. EOS Ground System 
   (EGS) systems and operations concept. Greenbelt, MD: Goddard Space Flight 
   Center.

   Hall, Dorothy 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, Dorothy 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, Dorothy K. and J. Martinec. 1985. Remote sensing of ice and snow. 
   London: Chapman and Hall.

   Hall, Dorothy K., George A. Riggs, and Vincent 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, Dorothy K., George A. Riggs, and Vincent 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, Dorothy K., George 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, Chuck 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, Mark 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, George A., Dorothy K. Hall, and Vincent V. Salomonson. February 2003. 
   MODIS sea ice products user guide.

   Riggs, George A., Dorothy 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.

End_Group
Group: Summary

   The MODIS/Aqua Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day 
   (MYD29E1D) data set contains Northern and Southern Hemisphere daily sea ice 
   extent and ice surface temperature (IST), gridded to a 4 km resolution Equal 
   Area Scalable Earth Grid (EASE-Grid).

   Note: New Version 6 sea ice data are available from 
   04/15/2015 until present. Version 6 reprocessing is proceeding in time order 
   from the beginning of the data record and should be complete near the end of 
   2015. Once complete, forward processing will continue for both Version 5 and 
   Version 6 for approximately one year, after which Version 5 will be 
   discontinued. See MODIS | V6 Sea 
   Ice Reprocessing for details.

   Get Version 5

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/modis/
   Description: MODIS Data at NSIDC
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2015-05-27
Last_DIF_Revision_Date: 2015-06-04
DIF_Revision_History: Removed V. Salomonson as PI per request from D. Hall.