Dear Dr. Dennis;
thanks for your reply.
>You do not have enough memory on your machine
Don't you have any solution for that ? Currently I am working in Cygwin.
Best regards,
Marzuki
________________________________
From: Dennis Shea <shea_at_ucar.edu>
To: juki juki <juky_emc2_at_yahoo.com>
Cc: "ncl-talk_at_ucar.edu" <ncl-talk_at_ucar.edu>
Sent: Tuesday, December 13, 2011 8:36 AM
Subject: Re: read OLR data
fatal:NclMalloc Failed:[errno=12]
You do not have enough memory on your machine.
> Variable: dataShort
> Type: short
> Total Size: 249870240 bytes
The variable is ~2.5GB in *short* form.
In float form, it will be ~5GB.
For the conversion to occur, both the short and float
must be in memory at the same time.
====
The following reads only 10 time steps but it shows the
steps you used are correct.
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
fileName = "olr.day.mean.nc"
inFile = addfile( fileName, "r" )
itStrt = 0
itLast = 9
data = short2flt( inFile->olr(itStrt:itLast,:,:) )
printVarSummary(data)
printMinMax(data, 0)
On 12/12/11 4:14 PM, juki juki wrote:
> Dear Dr. Dennis;
>
> Thanks for your reply. The following is detailed error comment:
>
> Copyright (C) 1995-2011 - All Rights Reserved
> University Corporation for Atmospheric Research
> NCAR Command Language Version 6.0.0
> The use of this software is governed by a License Agreement.
> See http://www.ncl.ucar.edu/ for more details.
> (0) Here we go! Tue Dec 13 08:06:35 TST 2011
> (0) Reading the data...
> fatal:NclMalloc Failed:[errno=12]
>
> fatal:Could not coerce values for operation
>
> fatal:Execute: Error occurred at or near line 1696 in file
> $NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl
>
>
> fatal:Execute: Error occurred at or near line 33 in file test1.ncl
>
> >You should send the output from print(dataShort)
> I can not send it completely here because dataShort are from
> "olr.day.mean.nc <http://olr.day.mean.nc/>", it is very big file, but
> the beginning part of the output is
>
> Variable: dataShort
> Type: short
> Total Size: 249870240 bytes
> 124935120 values
> Number of Dimensions: 3
> Dimensions and sizes: [time | 11885] x [lat | 73] x [lon | 144]
> Coordinates:
> time: [17338824..17624040]
> lat: [90..-90]
> lon: [ 0..357.5]
> Number Of Attributes: 15
> long_name : Daily OLR
> unpacked_valid_range : ( 0, 500 )
> actual_range : ( 94.5, 328.25 )
> units : W/m^2
> add_offset : 327.65
> scale_factor : 0.01
> missing_value : 32766
> var_desc : Outgoing Longwave Radiation
> precision : 2
> dataset : NOAA Interpolated OLR
> level_desc : Other
> statistic : Mean
> parent_stat : Individual Obs
> valid_range : ( -32765, 17235 )
> _FillValue : 32766
> (0,0,0) -17090
> (0,0,1) -17090
> (0,0,2) -17090
> (0,0,3) -17090
> (0,0,4) -17090
> (0,0,5) -17090
> (0,0,6) -17090
> (0,0,7) -17090
> (0,0,8) -17090
> (0,0,9) -17090
> ........
>
> Thanks again for best help.
>
> Regards,
> Juky
>
>
>
>
>
> > inFile = addfile( fileName, "r" )
> > obsPerDay = 1
> >
> >
> > ; find our times
> > time = inFile->time
> > filtStart = ut_inv_calendar( 1979, 01, 01, 0, 0, 0, time_at_units, 0)
> > filtEnd = max(time)
> > startDate = filtStart + 192 * 24
> > endDate = filtEnd - 192 * 24
> >
> > ; read in the unfiltered data
> > print( "Reading the data..." )
> > dataShort = inFile->olr({filtStart:filtEnd},:,:)
>
>
> ------------------------------------------------------------------------
> *From:* Dennis Shea <shea_at_ucar.edu>
> *To:* juki juki <juky_emc2_at_yahoo.com>
> *Cc:* "ncl-talk_at_ucar.edu" <ncl-talk_at_ucar.edu>
> *Sent:* Monday, December 12, 2011 11:40 PM
> *Subject:* Re: [ncl-talk] convert nc file in sigma to pressure level
>
> There is not enough information.
> Not sure what "[errno=12] is.
>
> > ;print(dataShort)
> > data = short2flt( dataShort )
>
> You should send the output from
>
> print(dataShort)
>
> On 12/11/11 10:45 PM, juki juki wrote:
> > Hi Dr. Dennis;
> >
> > I want to read the OLR data with the following code:
> >
> > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
> > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
> >
> >
> > begin
> >
> > print( "Here we go! " + systemfunc( "date" ) )
> >
> > mis = -999
> > mis@_FillValue = -999
> >
> > ; open the file
> >
> > fileName = "olr.day.mean.nc <http://olr.day.mean.nc>"
> > inFile = addfile( fileName, "r" )
> > obsPerDay = 1
> >
> >
> > ; find our times
> > time = inFile->time
> > filtStart = ut_inv_calendar( 1979, 01, 01, 0, 0, 0, time_at_units, 0)
> > filtEnd = max(time)
> > startDate = filtStart + 192 * 24
> > endDate = filtEnd - 192 * 24
> >
> > ; read in the unfiltered data
> > print( "Reading the data..." )
> > dataShort = inFile->olr({filtStart:filtEnd},:,:)
> > ;print(dataShort)
> > data = short2flt( dataShort )
> >
> > ; ......many more
> > end
> >
> > the code stop at data = short2flt( dataShort ), with the [errno=12]. I
> > am working in cygwin, could you suggest some help ?
> >
> >
> > thanks very much
> > Juky
> >
> >
> >
> >
> > ------------------------------------------------------------------------
> > *From:* Dennis Shea <shea_at_ucar.edu <mailto:shea_at_ucar.edu>>
> > *To:* Coly SAR <colysar_at_gmail.com <mailto:colysar_at_gmail.com>>
> > *Cc:* ncl-talk_at_ucar.edu <mailto:ncl-talk_at_ucar.edu>
> > *Sent:* Sunday, September 4, 2011 11:21 PM
> > *Subject:* Re: [ncl-talk] convert nc file in sigma to pressure level
> >
> > Not sure what to say. See Example 2 at
> > http://www.ncl.ucar.edu/Applications/vert_interp.shtml
> > or Example 5 at
> > http://www.ncl.ucar.edu/Document/Functions/Built-in/vinth2p.shtml
> >
> > ===========================================
> > You *MUST* have the surface pressure.
> >
> > Here is an excerpt:
> >
> > f = addfile(....)
> > t = f->t
> > ps= f->ps ; sfc pressure [hPa or Pa]
> >
> > sigma = f->sigma
> > or
> > sigma = t&lev
> >
> > dimt = dimsizes(t)
> > ntim = dimt(0)
> > ksig = dimt(1)
> > nlat = dimt(2)
> > mlon = dimt(3)
> >
> > ;***************************************************
> > ; interpolate to pressure levels
> > ;***************************************************
> > plevs = (/1000,925, 850, 800, 700, 600, 500, 300 \
> > , 200, 250, 200, 150, 100/)*1.0
> > plevs_at_units = "hPa"
> >
> > if (ps_at_units.eq <mailto:ps_at_units.eq> <mailto:ps_at_units.eq
> <mailto:ps_at_units.eq>>."Pa" .or. ps_at_units.eq <mailto:ps_at_units.eq>
> > <mailto:ps_at_units.eq <mailto:ps_at_units.eq>>."Pascals") then
> > ps = ps*0.01
> > ps_at_units = "hPa"
> > end if
> >
> > hyam = fspan(0.,0.,ksig-1) ; create fake hyba array
> > hybm = sigma
> >
> > tp = vinth2p(t,hyam,hybm,plevs,ps,1,1000,1,True)
> > printVarSummary(tp)
> >
> >
> > On 9/4/11 5:00 AM, Coly SAR wrote:
> > > Below is the structure of the file i am trying to convert in pressure
> > > levels. It 18 sigma levels and I want to have at standard pressure
> > > levels : 1000 925 850 800 700 600 500 300 200 250 200 150 100
> > >
> > > CS
> > >
> > > netcdf atm99 {
> > > dimensions:
> > > lon = 190 ;
> > > lat = 106 ;
> > > lev = 18 ;
> > > time = UNLIMITED ; // (124 currently)
> > > variables:
> > > double lon(lon) ;
> > > lon:long_name = "longitude" ;
> > > lon:units = "degrees_east" ;
> > > lon:standard_name = "longitude" ;
> > > lon:axis = "X" ;
> > > double lat(lat) ;
> > > lat:long_name = "latitude" ;
> > > lat:units = "degrees_north" ;
> > > lat:standard_name = "latitude" ;
> > > lat:axis = "Y" ;
> > > double lev(lev) ;
> > > lev:long_name = "generic" ;
> > > lev:units = "level" ;
> > > lev:axis = "Z" ;
> > > double time(time) ;
> > > time:units = "hours since 1999-01-01 06:00:00" ;
> > > time:calendar = "standard" ;
> > > float u(time, lev, lat, lon) ;
> > > u:long_name = "westerly wind (m/s)" ;
> > > u:_FillValue = -1.e+34f ;
> > > float v(time, lev, lat, lon) ;
> > > v:long_name = "southerly wind (m/s)" ;
> > > v:_FillValue = -1.e+34f ;
> > > float w(time, lev, lat, lon) ;
> > > w:long_name = "omega (hPa/s) p-velocity" ;
> > > w:_FillValue = -1.e+34f ;
> > > float t(time, lev, lat, lon) ;
> > > t:long_name = "air temperature (degree)" ;
> > > t:_FillValue = -1.e+34f ;
> > >
> > >
> > > 2011/9/3 Coly SAR <colysar_at_gmail.com <mailto:colysar_at_gmail.com>
> <mailto:colysar_at_gmail.com <mailto:colysar_at_gmail.com>>
> > <mailto:colysar_at_gmail.com <mailto:colysar_at_gmail.com>
> <mailto:colysar_at_gmail.com <mailto:colysar_at_gmail.com>>>>
> > >
> > >
> > > It is essentially interpolating sigma levels at selected constant
> > > pressure
> > > levels and write it to a new nc file having pressure levels.
> > >
> > > CS
> > >
> > >
> > > 2011/9/3 Dennis Shea <shea_at_ucar.edu <mailto:shea_at_ucar.edu>
> <mailto:shea_at_ucar.edu <mailto:shea_at_ucar.edu>>
> > <mailto:shea_at_ucar.edu <mailto:shea_at_ucar.edu> <mailto:shea_at_ucar.edu
> <mailto:shea_at_ucar.edu>>>>
> > >
> > > This questions is a bit ambiguous. Are you talking about calculating
> > > the pressure at each level and grid point or interpolating
> > > sigm to constant pressure levels?
> > >
> > > See Example 2 at:
> > > http://www.ncl.ucar.edu/__Applications/vert_interp.shtml
> > > <http://www.ncl.ucar.edu/Applications/vert_interp.shtml>
> > >
> > > It shows how to do both.
> > >
> > >
> > > 9/3/11 7:37 AM, Coly SAR wrote:
> > >
> > > Dear NCL users,
> > > I have model output in netcdf with sigma levels and want to
> > > convert
> > > from sigma to pressure and wondering if a such
> > > routine or script is available in ncl.
> > >
> > > CS
> > >
> > >
> > > _________________________________________________
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> > >
> > >
> > >
> > >
> > >
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>
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Received on Mon Dec 12 16:52:45 2011
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