Hello,
I'm trying to read precip accumulation from a GRIB file. In the case where
there are variables for multiple accumulation periods in the file, NCL uses
only one of the variables. The NCL GRIB variable naming convention does not
appear to handle the length of the accumulation.
As an example, the output of "wgrib" shows that there are two accumulation
periods available: 12-24 hr and 21-24 hr.
441:11022150:d=01101000:APCP:kpds5=61:kpds6=1:kpds7=0:TR=4:P1=12:P2=24:TimeU
=1:sfc:12-24hr acc:NAve=0
554:13830914:d=01101000:APCP:kpds5=61:kpds6=1:kpds7=0:TR=4:P1=21:P2=24:TimeU
=1:sfc:21-24hr acc:NAve=0
NCL makes only one of these available, however:
Variable: A_PCP_212_SFC_acc (file variable)
Type: float
Total Size: 95460 bytes
23865 values
Number of Dimensions: 2
Dimensions and sizes: [gridx_212 | 129] x [gridy_212 | 185]
Coordinates:
Number Of Attributes: 10
center : US Weather Service - National Met. Center
long_name : Total precipitation
units : kg/m^2
_FillValue : -999
level_indicator : 1
grid_number : 212
parameter_number : 61
model : ETA Model - 40 km version
forecast_time : 24
initial_time : 10/10/2001 (00:00)
Any help would be appreciated. Thank you.
Richard Carpenter
This archive was generated by hypermail 2b29 : Fri Oct 12 2001 - 10:37:10 MDT