[Wrf-users] Why the value of the variables in wrfout files is nan?

[Jie Tang]

>
>   I run the ldeal les run in a large domain by wrf v3.4 setting "
> WRFIO_NCD_LARGE_FILE_SUPPORT=1"
>  And every single wrfout file has the volume of about 17G and  every 12
> times of
> the output were be written into a single wrfoutfile.
>  When I check the value of wrfout file by ncdump command or ncl_ndump and
> by ncl script,
> the calculated variables of the output files(e.g.U or V ) are all NaN
> except for the initial 00:00 files and
>
the other variables (e.g XTIME) are ordinary.

the error information generated by reading the wrfout files by ncl script
> is shown as below . And
> ncdump also shows that every time of wrfout file except for the initial
> fime are nan.
> Can anyone tell me why and how to resolve it ?thank you,
>
> Variable: ua (subsection)
> Type: float
> Total Size: 48 bytes
>             12 values
> Number of Dimensions: 1
> Dimensions and sizes: [Time | 12]
> Coordinates:
> Number Of Attributes: 6
>   coordinates : XLONG XLAT
>   stagger :
>   units : m s-1
>   description : x-wind component
>   MemoryOrder : XYZ
>   FieldType : 104
> (0) 0
> (1) nan
> (2) nan
> (3) nan
> (4) nan
> (5) nan
> (6) nan
> (7) nan
> (8) nan
> (9) nan
> (10) nan
> (11) nan
>
> And the ncl script is shown here
>
>   nc_file     = addfile("wrfout_d01_0001-01-01_00:00:00.nc" ,"r")  ;
>   ua  = wrf_user_getvar(nc_file,"ua",-1)
>   print(ua(:,3,200,200))
>
> -
> TANG Jie
> Email: totangjie at gmail.com
> Tel: 0086-2154896104
> Shanghai Typhoon Institute,China
>



-- 
TANG Jie
Email: totangjie at gmail.com
Tel: 0086-2154896104
Shanghai Typhoon Institute,China
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