This is the directory where input data to terrain
program resides.

Apart from USGS tiled 30 second elevation data, all
input data to TERRAIN are expected to locate in this
directory. The complete data sets for TERRAIN Version 3.5 
and their sizes are listed below:

Global elevation data, generated from USGS 30 sec dataset:
   116640000  DEM_02M_GLOBAL
    18662400  DEM_05M_GLOBAL
     4665600  DEM_10M_GLOBAL
      518400  DEM_30M_GLOBAL
      129600  DEM_60M_GLOBAL

Old 13-category landuse data:
    30326400  LANDUSE.10
     3369600  LANDUSE.30
      842400  LANDUSE.60

USGS (Version 2) 24-category land-water mask and landuse/vegetaion data:
   933120000  LWMASK-USGS.30s
    58320000  LWMASK-USGS.02
     9331200  LWMASK-USGS.05
     2332800  LWMASK-USGS.10
      259200  LWMASK-USGS.30
       64800  LWMASK-USGS.60
   933120000  VEG-USGS.30s
  1458000000  VEG-USGS.02
   233280000  VEG-USGS.05
    58320000  VEG-USGS.10
     6480000  VEG-USGS.30
     1620000  VEG-USGS.60

Top (0-30 cm) soil category (17), deep soil temp and vegetation fraction data:
   933120000  SOILCAT.30s
   991440000  SOILCAT.02
   158630400  SOILCAT.05
    39657600  SOILCAT.10
     4406400  SOILCAT.30
     1101600  SOILCAT.60
      129600  SOILTEMP.60
    27993600  VEG-FRACTION.10

Bottom (30-100 cm) soil category (17):
   933120000  SOILCATB.30s
   991440000  SOILCATB.02
   158630400  SOILCATB.05
    39657600  SOILCATB.10
     4406400  SOILCATB.30
     1101600  SOILCATB.60

SiB 16-category land-water mask and landuse/vegetaion data:
   155520000  LWMASK-SIB.30s
     9720000  LWMASK-SIB.02
     1555200  LWMASK-SIB.05
      388800  LWMASK-SIB.10
       43200  LWMASK-SIB.30
       10800  LWMASK-SIB.60
   155520000  VEG-SIB.30s
   165240000  VEG-SIB.02
    26438400  VEG-SIB.05
     6609600  VEG-SIB.10
      734400  VEG-SIB.30
      183600  VEG-SIB.60
