[ncl-talk] short2flt error

[Ehsan Taghizadeh]

Dear Rick,The nc file is included a domain including (25-40N, 40-65E) which was downloaded with the attach api script (temp2m09_18.py). As you mentioned the downloaded file has a size more than 6 GB, because of the domain and long term hourly data. Should I break the time period to have smaller size?
On the other hand I would like to interpolate temperature on stations location with the attached script (if I assume short2flt has fixed). How could I write these long data (34*10*365), which 34 is number of stations, 10*365 is number of days?In other words, the desired quantity "t2m_int2p_mima" has 3 dimensions; 1st dimension is related to (min, max, avg), 2nd dimension is related to days which is about 10*365,and 3rd dimension is related to stations which is about 34 stations.May I ask how could I write "t2m_int2p_mima" in a table with headers same as below:
 "stid  min(day1) max(day1) avg(day1) min(day2) max(day2) avg(day2) ... min(day10*365) max(day10*365) avg(day10*365)"
I'll be thankful for any help.
-----------------------------------------------------------------------------Sincerely,Ehsan Taghizadeh

 

    On Monday, September 12, 2022 at 08:14:54 PM GMT+4:30, Rick Brownrigg <brownrig at ucar.edu> wrote:  
 
 Hi Ehsan,
That errno=12 is an out of memory error, so I suspect short2flt() is not the issue. Are you working with really large datasets/arrays?  That short array converted to floats will be 6.6GB
Rick

On Mon, Sep 12, 2022 at 9:30 AM Ehsan Taghizadeh via ncl-talk <ncl-talk at mailman.ucar.edu> wrote:

Hi everybody,I hope you are doing well.I tried to read "2 metre temperature" from ERA5-Land nc file. This nc file include about 10 years, all months (12 months), all days (365 days), and all hours (24 hours) with size about 7 GB. I used following simple lines:
dr = "./"fn = "era5land.nc"fin = addfile(dr+fn, "r")t2mera = fin->t2m(:,::-1,:)printVarSummary(t2mera)
Output is like following lines:
Type: shortDimensions and sizes:   [time | 87648] x [latitude | 151] x [longitude | 251]Coordinates:            time: [955488..1043135]            latitude: [25..40]            longitude: [40..65]
However, if I use short2flt as below:t2meras = short2flt(fin->t2m(:,::-1,:))
Following error occurred:
fatal:NclMalloc Failed:[errno=12]fatal:Could not coerce values for operationfatal:["Execute.c":8637]:Execute: Error occurred at or near line 2013 in file /usr/local/ncl6.6/lib/ncarg/nclscripts/csm/contributed.ncl
Then it mentioned the line with the "short2flt" command.
I'll be thankful if I have any help.

-----------------------------------------------------------------------------Sincerely,Ehsan Taghizadeh
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