Re: How to calculate the weighted average of Relative humidity?

Hi,

Line 17 is:

    RHAvg=dim_avg_wgt_n(RH,wgt,1,0)

The "wgt" array must be the same length as the "nth" dimension. In
your case, length of wgt is 4; I'm not sure what the "0"th dimension
of RH is (check your print(RH) output), but I bet its not 4.

Check out the docs at:

    http://ncl.ucar.edu/Document/Functions/Built-in/dim_avg_wgt_n.shtml

I hope that helps...
Rick

On Wed, 23 Nov 2011 15:26:31 +0530
  manaswini sreekar <manaswinikolluru@gmail.com> wrote:
> Hi
>
> How to calculate the weighted average of the relative humidity?
>
> attached is my ncl script and here is my PrintVarSummary.
>
> I am getting the min and max of Relative humidity as
> min(RH)=-20.4056 max(RH)=213.099.
> so I wanted the values are right or wrong.
>
> the data is july 1st 2008 to july 31st 2008
>
> Variable: RH_TL_AVG
> Type: float
> Total Size: 317440000 bytes
> 79360000 values
> Number of Dimensions: 4
> Dimensions and sizes: [g50_lat_3 | 800] x [g50_lon_4 | 800] x
> [initial_time0_hours | 31] x [lv_ISBL1 | 4]
> Coordinates:
> initial_time0_hours: [1827654..1828374]
> lv_ISBL1: [700..900]
> Number Of Attributes: 10
> center : European Center for Medium-Range Weather Forecasts
>(RSMC)
> long_name : Relative humidity
> units : %
> _FillValue : 1e+20
> level_indicator : 100
> gds_grid_type : 50
> parameter_table_version : 128
> parameter_number : 157
> forecast_time : 0
> forecast_time_units : hours
> (0) min(RH)=-20.4056 max(RH)=213.099
> fatal:dim_avg_wgt_n: w must be length nx
> fatal:Execute: Error occurred at or near line 17 in file CFRHC.ncl
>
>
> Can anyone give me some hint to resolve the error?

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Received on Wed Nov 23 07:24:08 2011