Dear Ferret users,
I have model output
in netcdf format of dimension (192 x 145) with default axis of xpts and
ypts. The latitude and longitude values stored like variables,
and are in two dimensional . Is it posible to define grid in 2-D
or any other way we can make the netcedf with default axis in X and
Y using ferret
ncdump -h histday_may01_jul91.nc results as follows:
netcdf histday_may01_jul91 {
dimensions:
x = 192 ;
y = 145 ;
presnivs = 19 ;
time_counter = UNLIMITED
; // (30 currently)
variables:
float nav_lon(y, x) ;
nav_lon:units = "degrees_east" ;
nav_lon:valid_min = -178.0906f ;
nav_lon:valid_max = 179.7624f ;
nav_lon:long_name = "Longitude" ;
nav_lon:nav_model = "Default grid" ;
float nav_lat(y, x) ;
nav_lat:units = "degrees_north" ;
nav_lat:valid_min = -90.f ;
nav_lat:valid_max = 90.f ;
nav_lat:long_name = "Latitude" ;
nav_lat:nav_model = "Default grid" ;
float presnivs(presnivs)
;
presnivs:units = "mb" ;
presnivs:valid_min = 388.2434f ;
presnivs:valid_max = 100426.5f ;
presnivs:title = "presnivs" ;
presnivs:long_name = "Vertical levels" ;
float time_counter(time_counter)
;
time_counter:units = "seconds since 1990-07-02 00:00:00" ;
time_counter:calendar = "360d" ;
time_counter:title = "Time" ;
time_counter:long_name = "Time axis" ;
time_counter:time_origin = " 1990-JUL-02 00:00:00" ;
float rain(time_counter,
y, x) ;
rain:units = "mm/day" ;
rain:missing_value = 1.e+20f ;
rain:valid_min = 1.e+20f ;
rain:valid_max = -1.e+20f ;
rain:long_name = "Precipitation" ;
rain:short_name = "rain" ;
rain:online_operation = "ave(X)" ;
rain:axis = "TYX" ;
rain:interval_operation = 1800.f ;
rain:interval_write = 86400.f ;
rain:associate = "time_counter nav_lat nav_lon" ;
float evap(time_counter,
y, x) ;
evap:units = "mm/day" ;
evap:missing_value = 1.e+20f ;
evap:valid_min = 1.e+20f ;
evap:valid_max = -1.e+20f ;
evap:long_name = "Evaporation" ;
evap:short_name = "evap" ;
evap:online_operation = "ave(X)" ;
evap:axis = "TYX" ;
evap:interval_operation = 1800.f ;
evap:interval_write = 86400.f ;
evap:associate = "time_counter nav_lat nav_lon" ;
// global attributes:
:Conventions = "GDT 1.2" ;
:file_name = "histday.nc" ;
:production = "An IPSL model" ;
:TimeStamp = "2005-MAR-17 09:44:56 GMT+05-3" ;
}
Thanks for any suggesions and help
with regards,
Ramesh
--
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Dr. K.V. Ramesh
Scientist
CSIR Centre for Mathematical Modelling and Computer Simulation (C-MMACS)
NAL Belur Campus, Bangalore - 560 037, India.
E-mail: ramesh@cmmacs.ernet.in, kvram55@yahoo.com
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