[gradsusr] Displaying data : all undefined values
zineb lotfi
zineb.lotfi at gmail.com
Tue Jun 9 09:31:30 EDT 2015
unfortunately I can't run GrADS correctly. I tried to write a descriptor
file and used "open" to work with it. It actually opens successfully but
whenever I try to display the data it gaves me this error message :
ga-> d pr
Notice: Automatic Grid Interpolation Taking Place
Cannot contour grid - all undefined values
Can you please give me a solution to try? I put my version of Grads, my
descriptor file and the result of ncdump-h below.
I have another question will this interpolation change my data, do I need
to take it into consideration when analysing it ?
Thank you so much for your help
------------------------------------------------------------------------------------------------------
*GrADS version* : Grid Analysis and Display System (GrADS) Version 2.0.1
------------------------------------------------------------------------------------------------------
*DESCRIPTOR FILE*
DSET
^pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_1976-2005.nc
DTYPE netcdf
TITLE pr_CNRM_CLMcom_hist
UNDEF 1.0E20
PDEF 4 4 rotllr -162.0 39.25 0.11 0.11 -13.3050003052 -1.925
XDEF 16 LEVELS 47.0483 47.0769 47.1054 47.1336 47.1545 47.1832 47.2117
47.2399 47.2606 47.2894 47.3179 47.3462 47.3667 47.3956 47.4242 47.4525
YDEF 16 LEVELS -1.72807 -1.57226 -1.41627 -1.26012 -1.77038 -1.61427
-1.45798 -1.30153 -1.81286 -1.65645 -1.49986 -1.34311 -1.8555 -1.69879
-1.54191 -1.38485
ZDEF 0 LEVELS 0
TDEF 10958 LINEAR 01JAN1976 1DY
VARS 6
time 0 t Time
rlat 0 x Rotated latitude
rlon 0 y Rotated longitude
lon 0 x,y longitude
lat 0 x,y latitude
pr 0 t,x,y precipitation
ENDVARS
---------------------------------------------------------------------------------------------------------
*ncdump -h result*
netcdf
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_1976-2005
{
dimensions:
rlat = 4 ;
rlon = 4 ;
time = UNLIMITED ; // (10958 currently)
variables:
float lat(rlat, rlon) ;
lat:standard_name = "latitude" ;
lat:long_name = "latitude coordinate" ;
lat:units = "degrees_north" ;
lat:bounds = "lat_vertices" ;
float lon(rlat, rlon) ;
lon:standard_name = "longitude" ;
lon:long_name = "longitude coordinate" ;
lon:units = "degrees_east" ;
lon:bounds = "lon_vertices" ;
float pr(time, rlat, rlon) ;
pr:standard_name = "precipitation_flux" ;
pr:long_name = "Precipitation" ;
pr:comment = "at surface; includes both liquid and solid phases
from all types of clouds (both large-scale and convective)" ;
pr:units = "kg m-2 s-1" ;
pr:cell_methods = "time: mean" ;
pr:missing_value = 1.e+20f ;
pr:_FillValue = 1.e+20f ;
pr:associated_files = "gridspecFile:
gridspec_atmos_fx_CLMcom-CCLM4-8-17_historical_r0i0p0.nc" ;
pr:grid_mapping = "rotated_latitude_longitude" ;
pr:coordinates = "lat lon" ;
double rlat(rlat) ;
rlat:units = "degrees" ;
rlat:axis = "Y" ;
rlat:long_name = "latitude in rotated pole grid" ;
rlat:standard_name = "grid_latitude" ;
double rlon(rlon) ;
rlon:units = "degrees" ;
rlon:axis = "X" ;
rlon:long_name = "longitude in rotated pole grid" ;
rlon:standard_name = "grid_longitude" ;
int rotated_latitude_longitude ;
rotated_latitude_longitude:grid_mapping_name =
"rotated_latitude_longitude" ;
rotated_latitude_longitude:grid_north_pole_latitude = 39.25 ;
rotated_latitude_longitude:grid_north_pole_longitude = -162. ;
rotated_latitude_longitude:north_pole_grid_longitude = 0. ;
double time(time) ;
time:bounds = "time_bnds" ;
time:units = "days since 1949-12-01T00:00:00Z" ;
time:calendar = "proleptic_gregorian" ;
time:axis = "T" ;
time:long_name = "time" ;
time:standard_name = "time" ;
// global attributes:
:institution = "Climate Limited-area Modelling Community
(CLM-Community)" ;
:institute_id = "CLMcom" ;
:experiment_id = "historical" ;
:source = "CLMcom-CCLM4-8-17" ;
:model_id = "CLMcom-CCLM4-8-17" ;
:contact = "cordex-cclm at dkrz.de" ;
:history = "Tue Jun 9 10:55:03 2015: ncrcat
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19760101-19801231.nc_nantes.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19810101-19851231.nc_nantes.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19860101-19901231.nc_nantes.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19910101-19951231.nc_nantes.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19960101-20001231.nc_nantes.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_20010101-20051231.nc_nantes.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_1976-2005.nc\n",
"Mon Jun 8 16:46:49 2015: ncks -C -x -v
lat_vertices,lon_vertices,time_bnds -d rlat,-1.9250001,-1.595 -d
rlon,-13.3050006,-12.9750003814
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19760101-19801231.nc
pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19760101-19801231.nc_nantes.nc
\n",
"Processing for CORDEX archive at DKRZ (SVN revision 4244
http://svn-mad.zmaw.de/svn/mad/Model/IMDI/tags/cclm/cosmo_090213_4.8_clm17_cordex/util/running)
2014-03-24T10:24:23Z CMOR rewrote data to comply with CF standards and
CORDEX requirements." ;
:comment = "CORDEX Europe RCM CCLM 0.11 deg EUR-11" ;
:references = "http://www.clm-community.eu/" ;
:initialization_method = 1 ;
:physics_version = 1 ;
:tracking_id = "dd5f3a1b-646e-484a-b64c-04499e21af42" ;
:title = "CLMcom-CCLM4-8-17 model output prepared for CORDEX
historical" ;
:CORDEX_domain = "EUR-11" ;
:driving_experiment = "CNRM-CERFACS-CNRM-CM5, historical, r1i1p1" ;
:driving_model_id = "CNRM-CERFACS-CNRM-CM5" ;
:driving_model_ensemble_member = "r1i1p1" ;
:driving_experiment_name = "historical" ;
:rcm_version_id = "v1" ;
:product = "output" ;
:experiment = "historical" ;
:frequency = "day" ;
:creation_date = "2014-03-24T10:24:23Z" ;
:Conventions = "CF-1.4" ;
:project_id = "CORDEX" ;
:table_id = "Table day (Sept 2013)
0cf1782745489246c9ff07bd6619f558" ;
:modeling_realm = "atmos" ;
:realization = 1 ;
:cmor_version = "2.9.1" ;
:NCO = "4.4.2" ;
:nco_openmp_thread_number = 1 ;
}
*LOTFI Zineb*
Ecole Centrale de Nantes
Master Sciences et Techniques des Environnements Urbains
*Mobile*: 07 60 13 09 50
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