[ncl-talk] problem with GPCP data grid

victor mashibo321 at 126.com
Sun Jan 27 06:38:08 MST 2019


I need some help with GPCP monthly data grid.
The grid of data seems unusual. When I do ncdump -h, it output like below. I don't know how to deal with something like "latitude(nlat)"?
Should I need to regriding? What should I do if I want to reshape the data to an usual one?

...
variables:
    float latitude(nlat) ;
        latitude:long_name = "Latitude" ;
        latitude:standard_name = "latitude" ;
        latitude:units = "degrees_north" ;
        latitude:valid_range = -90.f, 90.f ;
        latitude:missing_value = -9999.f ;
        latitude:bounds = "lat_bounds" ;
    float longitude(nlon) ;
        longitude:long_name = "Longitude" ;
        longitude:standard_name = "longitude" ;
        longitude:units = "degrees_east" ;
        longitude:valid_range = 0.f, 360.f ;
        longitude:missing_value = -9999.f ;
        longitude:bounds = "lon_bounds" ;
    float time(time) ;
        time:long_name = "time" ;
        time:standard_name = "time" ;
        time:units = "days since 1970-01-01 00:00:00 0:00" ;
        time:calendar = "julian" ;
        time:axis = "T" ;
    float lat_bounds(nlat, nv) ;
        lat_bounds:units = "degrees_north" ;
        lat_bounds:comment = "latitude values at the north and south bounds of each pixel." ;
    float lon_bounds(nlon, nv) ;
        lon_bounds:units = "degrees_east" ;
        lon_bounds:comment = "longitude values at the west and east bounds of each pixel." ;
    float time_bounds(nv, time) ;
        time_bounds:units = "days since 1970-01-01 00:00:00 0:00" ;
        time_bounds:comment = "time bounds for each time value" ;
    float precip(nlat, nlon) ;
        precip:long_name = "NOAA Climate Data Record (CDR) of Monthly GPCP Satellite-Gauge Combined Precipitation" ;
        precip:standard_name = "precipitation amount" ;
        precip:units = "millimeters/day" ;
        precip:coordinates = "longitude latitude time" ;
        precip:valid_range = 0.f, 100.f ;
        precip:cell_methods = "precip: mean" ;
        precip:missing_value = -9999.f ;
    float precip_error(nlat, nlon) ;
        precip_error:long_name = "NOAA CDR of GPCP Satellite-Gauge Combined Precipitation Error" ;
        precip_error:units = "millimeters/day" ;
        precip_error:coordinates = "longitude latitude" ;
        precip_error:valid_range = 0.f, 100.f ;

        precip_error:missing_value = -9999.f ;
...









--

------------------------------------------------------------------------
Shibo Ma(马世波)
Graduate Student
Department of Atmospheric and Oceanic Sciences
School of Physics, Peking University
No. 209 Chengfu Road, Beijing, China
Email: mashibo321 at 126.com
Tel : +86 18810507714
------------------------------------------------------------------------

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20190127/22f85b66/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: gpcp_cdr_v23rB1_y2018_m08.nc
Type: application/octet-stream
Size: 106824 bytes
Desc: not available
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20190127/22f85b66/attachment.obj>


More information about the ncl-talk mailing list