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MODIS MOD12Q1 Notes Specific to 2000289, the Beta Delivery Released 27 April 2001

PGE 41
Data Day 2000289 (10/15/00)
Period of Data 2000193-2000352 (07/11/00-12/17/00)
Code Version V2.1.3 (03/16/01)

  The first MOD12Q1 run (beta product, nominal data day 2000289v1) was an operational code test, not a validated science product. It was based on less than one year of data (July 2000 to December 2000) while the product algorithm presumes a complete global annual cycle as input for the classification. Furthermore, input data prior to 31 October 2000 had not yet been corrected for aerosols. Despite these drawbacks, the performance of the beta Land Cover classification algorithm is quite encouraging.

   For nominal data day 2000289v1, the following data layers were delivered complete or with Fill Values (DN=255) throughout:
    Land_Cover_Type_1 (IGBP) Complete
    Land_Cover_Type_2 (UMD) (Same values for same SDS as in the at-launch product, 1990001.)
    Land_Cover_Type_3 (LAI) Fill Values
    Land_Cover_Type_4 (BGC) Fill Values
    Land_Cover_Type_5 (TBD) Fill Values
    Land_Cover_Type_1_Assessment Complete
    Land_Cover_Type_2_Assessment Fill Values
    Land_Cover_Type_3_Assessment Fill Values
    Land_Cover_Type_4_Assessment Fill Values
    Land_Cover_Type_5_Assessment Fill Values
    Land_Cover_Type_QC (Completed by MODAPS ingest)
    Land_Cover_Type_1_Secondary Fill Values
    Land_Cover_Type_1_Secondary_Percent Fill Values
    LC_Property_1 TBD Fill Values
    LC_Property_2 TBD Fill Values
    LC_Property_3 TBD Fill Values

   For nominal data day 2000289v1, Permanent Wetlands, Class 11 in SDS Land_Cover_Type_1, (IGBP), was not included as a possible output class.

   For nominal data day 2000289v1, Urban and Built-Up, Class 13 in SDS Land_Cover_Type_1, (IGBP), was not included as a possible output class. A rasterized version of the Digital Chart of the World from the EDC GLCC team was overlaid as a mask on the classifier output.


Author:John Hodges
Last Updated:9 July 2002