Database Reference
In-Depth Information
SUBDATASET_2_NAME=NETCDF:"soilw.mon.ltm.v2.nc":soilw
SUBDATASET_2_DESC=[12x360x720]
lwe_thickness_of_soil_moisture_content
(32-bit floating-point)
SUBDATASET_3_NAME=NETCDF:"soilw.mon.ltm.v2.nc":valid_yr_count
SUBDATASET_3_DESC=[12x360x720]
valid_yr_count (16-bit integer)Corner
Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 512.0)
Upper Right ( 512.0, 0.0)
Lower Right ( 512.0, 512.0)
Center ( 256.0, 256.0)
2. Use
gdalinfo
to investigate one of the file's subdatasets. The syntax
that the netCDF GDAL driver (
http://www.gdal.org/frmt_netcdf.html
) uses
is to append a colon followed by the variable name at the end of the
filename. For example, try to figure out how many bands make up the
soilw
subdataset. This subdataset, representing the
lwe_thickness_of_soil_moisture_content
, is composed of 12
bands.Eachband,accordingtotheinformationderivedbyitsmetadata,rep-
resentstheCPCMonthlySoilMoistureforagivenmonth.Themonthisiden-
tified by the
NETCDF_DIM_time
metadata value, which is the number of
days from the beginning of the year (
0
for January,
31
for February,
59
for
March, and so on):
$ gdalinfo
NETCDF:"soilw.mon.ltm.v2.nc":soilw
Driver: netCDF/Network Common Data Format
Files: none associated
Size is 512, 512
Coordinate System is `'
Metadata:
NC_GLOBAL#Conventions=CF-1.0
...(other metadata)...
Band 1 Block=720x1 Type=Float32,
