[Wrf-users] negative values when i plot rainfall output

[mmkamal at uwaterloo.ca]

Hi Juliet,

I do not know which language you are using to process WRF output. I am  
using NCL to process my WRF output. In NCL, you can use the following  
command to remove any negative values of both convective and non  
convective precipitation.


======================================
;-----> read in data

     f1  = addfile ("/home/wrfout_d01_2000-01-01.nc","r")   ; location  
of your WRF history file

     rain_conv       =  f1->RAINC(:,:,:)
     rain_non_conv   =  f1->RAINNC(:,:,:)

     x1   = rain_conv  > 0.0            ; consider only values greater  
than zero
     y1   = rain_non_conv > 0.0

     total_rainfall = x1+y1

===========================================

I hope this helps.


Thanks
Mostofa Kamal
PhD Candidate
Department of Earth and Environmental Sciences
University of Waterloo
Ontario, Canada



Quoting afwande juliet <afwandej965 at gmail.com>:

> Dear Users
> I am perplexed. I plotted WRF output Rainc and Rainnc and Rainnc+Rainc
> My worry is that there are negative values for convective rain and when i
> add convective and non convective rain.But when I plot only non convective
> rain, no negative value in the scale is seen
>
> Is the problem with my simualtions? OR how can I avoid negative values? I
> am using ferret to plot
>