CDO

Hi Margarida,

what do you mean with the coastlines disappear? There are no coastlines stored in the file, I think what you mean are the white grid cells colored by ncview.

Original file

Remapped data

-Karin

Hi Karin,

Thank you very much for your prompt answer. Yes, sorry for the explanation, I refer to the white grid cells colored by ncview.

Kind regards,

Marga

Hello Karin,

Sorry I forgot to activate the Opt option in ncview so the coastline is shown, so this issue is solved. Thank you very much for your attention!

Best regards,

Marga

Hello again Karin,

Sorry for re-opening this issue. Do you know how could the white line be removed? I tried with different values of selindexbox but I didn't achieve to solve it. For example -selindexbox,1,192,2,145:
cdo -L remapbil,tos_Omon_ACCESS-ESM1-5_piControl_r1i1p1f1_gn_010101-060012.nc -selindexbox,1,192,2,145 baresoilFrac_Lmon_ACCESS-ESM1-5_piControl_r1i1p1f1_gn_010101-060012.nc baresoilFrac_Lmon_ACCESS-ESM1-5_piControl_r1i1p1f1_gr_010101-060012.nc

Thank you very much in advance.

Best regards,

Marga

I think you mean something that is call 'missing cyclic point'. If you want to plot the data most vis tools can handle that.

Hi Karin,

You're right, I see it is due to the missing cyclic point in the longitudes. I tried with cdo -sethalo, but the white line still appears, is this command all right?
cdo -sethalo,0,1 test_gr-ts0.nc test_gr-ts0.nc-cycliclon

Many thanks!

Best regards,

Marga

I would say yes.

cdo -remapbil,tos_Omon_CanESM5-CanOE_piControl_r1i1p2f1_gn_580101-600012.nc-ts0 baresoilFrac_Lmon_CanESM5-CanOE_piControl_r1i1p2f1_gn_555001-560012.nc-ts0 outfile.nc

cdo sinfon outfile.nc 
   File format : NetCDF4 classic
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter name
     1 : unknown  CanESM5-CanOE v instant       1   1    104760   1  F32  : baresoilFrac  
   Grid coordinates :
     1 : curvilinear              : points=104760 (360x291)
                        longitude : 0.04980133 to 359.9949 degrees_east
                         latitude : -78.3935 to 89.74177 degrees_north
                        available : cellbounds
                          mapping : undefined
                                i : 0 to 359 by 1 1
                                j : 0 to 290 by 1 1
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :
                             time : 1 step
     RefTime =  1850-01-01 00:00:00  Units = days  Calendar = 365_day  Bounds = true
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  5550-01-16 12:00:00

cdo -sethalo,0,1 outfile.nc outfile_sethalo.nc

After the sethalo use, CDO sinfon tells you that the Grid coordinates longitude are now circular.

cdo sinfon outfile_sethalo.nc 
   File format : NetCDF4 classic
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter name
     1 : unknown  CanESM5-CanOE v instant       1   1    105051   1  F32  : baresoilFrac  
   Grid coordinates :
     1 : curvilinear              : points=105051 (361x291)
                        longitude : 0.04980133 to 359.9949 degrees_east  circular
                         latitude : -78.3935 to 89.74177 degrees_north
                        available : cellbounds
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :
                             time : 1 step
     RefTime =  1850-01-01 00:00:00  Units = days  Calendar = 365_day  Bounds = true
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  5550-01-16 12:00:00

Hi Karin,

Now I see how cdo -sethalo works, thank you very much for the explanation.

For the white line, I contacted the author of the ncview program and he told me that the code should be updated because ncview has some sort of bug with the map projection of this file, as the 0 degree longitude line is in the middle of the image, rather than at the edge. Then this message can be marked as solved.

Thank you very much for attention.

Best wishes,

Marga