The original BU_IGBP 1-km global vegetation class map was developed based on
MODIS data by Mark Friedl and his colleagues at Boston University.  It is based on the 
IGBP classification but excludes the permanent wetland (class 11) and cropland/natural 
vegetation mosaic (class 14). Now 3 new classes of tundra has been added by the Land Team/EMC/NCEP led by Ken Mitchell.  Lake is also added. (green_umd_bu21_17.bin.Z)

(A) New IGBP_MODIS_BU+tundra Landcover Class Legend:

 1 Evergreen Needleleaf Forest
 2 Evergreen Broadleaf Forest
 3 Deciduous Needleleaf Forest
 4 Deciduous Broadleaf Forest
 5 Mixed Forests
 6 Closed Shrublands
 7 Open Shrublands
 8 Woody Savannas
 9 Savannas
10 Grasslands
11 Permanent Wetland
12 Croplands
13 Urban and Built-Up
14 Cropland/Natural Vegetation Mosaic
15 Snow and Ice
16 Barren or Sparsely Vegetated
17 Ocean
18 Wooded Tundra
19 Mixed Tundra
20 Bare Ground Tundra

(B) Procedure to remap classes 7 and 16 to 18-19

Wooded Tundra (18): Map points at IGBP_MODIS_BU Open Shrublands (7)
and (SIB_MODIS_BU Tundra (10) or USGS_AVHRR Wooded Tundra (21)) to 18

Mixed Tundra (19): Map points at IGBP_MODIS_BU Barren/Sparsely Vegetated (16) 
and USGS Mixed Tundra (22) to 19.  

Map the rest of points at IGBP_MODIS_BU Open Shrubland (7) or Barren (16) which
are located on latitudes north of 60 degree North to Wooded Tundra (18) 
(on IGBP Mixed Forest (5) points) or Mixed Tundra (19) (for the rest).

(C) Sample program to read data

        program readIGBPBU
        integer*1 veg(43200,21600)
       open(unit=17,file='igbp_bu.bin',access='DIRECT',
     1  recl=43200*21600,status='old')
! vegetation types are stored as  8-bit unsigned integers
          read(17,rec=1) veg
          close(17)
        stop
        end

(D) Contact

    Vince.Wong@noaa.gov