Entry_ID: MYD29P1D
Entry_Title: MODIS/Aqua Sea Ice Extent Daily L3 Global 1km EASE-Grid Day
Group: Data_Set_Citation
   Dataset_Creator: Hall, D. K., V. V. Salomonson, and G. A. Riggs. 
   Dataset_Title: MODIS/Aqua Sea Ice Extent Daily L3 Global 1km EASE-Grid Day
   Dataset_Release_Date: 2006-12-18
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Version: 5
   Online_Resource: http://nsidc.org/data/myd29p1d.html
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: Vince
   Middle_Name: V.
   Last_Name: Salomonson
   Email: vincent.salomonson@utah.edu
   Phone: 1 801 585-9492 
   Group: Contact_Address
      Address: University of Utah
      Address: Department of Meteorology
      Address: University of Utah
      Address: Department of Meteorology
      Address: 135 S 1460 E, Rm 809
      City: Salt Lake City
      Province_or_State: UT
      Postal_Code: 84112
      Country: US
   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
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Oceans
   Term: Sea Ice
   Variable_Level_1: Ice Extent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Oceans
   Term: Sea Ice
   Variable_Level_1: Ice Temperature
End_Group
ISO_Topic_Category: Imagery/Base Maps/Earth Cover
Keyword: Antarctic
Keyword: Arctic
Keyword: Climatology
Keyword: DAAC
Keyword: EASE-Grid
Keyword: ECS
Keyword: EOSDIS
Keyword: Global Change
Keyword: Gridded
Keyword: Ice Surface Temperature
Keyword: IST
Keyword: NASA
Keyword: NSIDC
Keyword: Polar
Keyword: Remote Sensing
Keyword: Sea Ice
Sensor_Name: MODIS > Moderate-Resolution Imaging Spectroradiometer
Sensor_Name: SPECTRORADIOMETERS
Source_Name: AQUA > Earth Observing System, AQUA
Group: Temporal_Coverage
   Start_Date: 2002-07-04
End_Group
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: 1 km
   Longitude_Resolution: 1 km
   Temporal_Resolution: 1 day
End_Group
Project: EOSDIS > Earth Observing System Data Information System
Project: ESIP > Earth Science Information Partners Program
Group: Quality

   All MODIS/Aqua sea ice products are considered validated at stage 2 meaning 
   that accuracy has been assessed over a widely distributed set of locations and 
   time periods via several ground-truth and validation campaigns.

   Quality indicators for MODIS sea ice data can be found in the following three 
   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     * The Pixel QA SDS that accompanies each data field, for 
   example, Ice Surface Temperature Spatial QA.

   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:

       * MOD29P1D and MYD29P1D Local Sea Ice Attributes, Version 5     * MOD29P1D 
   and MYD29P1D Global Sea Ice Attributes, Version 5

   The ScienceQualityFlag and the ScienceQualityFlagExplanation may be 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.

   The IST Spatial QA and Sea Ice by Reflectance Spatial QA 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 coded integer values and tell if algorithm results were nominal, 
   abnormal, or if other defined conditions were encountered for a pixel (Riggs, 
   Hall, and Salomonson 2006).

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

End_Group
Data_Set_Language: English
Group: Data_Center
   Data_Center_Name: NASA DAAC > NASA DAAC at the National Snow and Ice Data 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 
      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: 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: Distribution
   Distribution_Media: FTP
   Distribution_Size: 0.05 - 1.5 MB
   Distribution_Format: HDF-EOS
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 0.05 - 1.5 MB
   Distribution_Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
End_Group
Group: Multimedia_Sample
   File: http://nsidc.org/data/modis/images/myd29p1d.2004037.sample.gif
   Caption: MYD29P1D Version 4 data, 06 February
2004
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.

   
Hapke, B. 1993. Theory of Reflectance and Emittance Spectroscopy. Cambridge: 
   Cambridge University Press. Key, Jeffrey 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, Jeffrey 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. December 2006. 
   MODIS Sea Ice Products User Guide to Collection 5. PDF.

   
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.

   
Snyder, John P. 1987. Map Projections: a Working Manual. U. S. Geological 
   Survey Professional Paper 1395. Department of the Interior. Washington, D. C.

   
United States Geological Survey. 2003. Lambert Azimuthal Equal Area Map 
   Projections. 
   http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#sinusoidal  
   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

   MODIS/Aqua Sea Ice Extent Daily L3 Global 1km Equal Area Scalable Earth Grid 
   (EASE-Grid) Day (MYD29P1D) data set contains fields for Sea Ice by 
   Reflectance, Sea Ice by Reflectance Spatial QA, Ice Surface Temperature (IST), 
   and Ice Surface Temperature Spatial QA in Hierarchical Data Format-Earth 
   Observing System (HDF-EOS) format, along with corresponding metadata. The 
   fields Sea Ice by IST and Combined Sea Ice that were in Version 4 (V004) were 
   removed from Version 5 (V005). MYD29P1D V005, the latest version of the 
   Moderate Resolution Imaging Spectroradiometer (MODIS) data, consists of 954 km 
   x 954 km tiles of 1 km resolution data gridded in the Lambert Azimuth Equal 
   Area map projection. 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.

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
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/seaice/
   Description: Sea Ice Products at NSIDC
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2006-12-18
Last_DIF_Revision_Date: 2013-11-14
DIF_Revision_History: Removed data disruption notice.