Map for aice: join north and south hemispheres

[Margarida]

Dear CESM team,

I downloaded the monthly aice files and I saw they are divided into North and South hemispheres (e.g. b.e11.B20TRC5CNBDRD.f09_g16.001.cice.h.aice_nh.185001-200512.nc and b.e11.B20TRC5CNBDRD.f09_g16.001.cice.h.aice_sh.185001-200512.nc). I tried to join both but a decomposed map appeared:
ncpdq -a nj,ni,time north.nc n1.nc
ncpdq -a nj,ni,time south.nc s1.nc
ncrcat s1.nc n1.nc r1.nc

Please, would it be possible if you could send me the instructions to join these files in order to obtain a good-looking map?

Thank you very much.
Best regards,
Margarida Samsó

 

[strandwg]

Rejoining the hemispheres won't change the appearance of a plot of aice, since there's a missing "strip" between the two hemispheres.

Also, both of those files contain the correct longitudes and latitudes for the hemisphere in question, as two-dimensional coordinate arrays "TLON" and "TLAT". You can use those fields to plot "aice".

What software are you using?

Thanks!

 

[Margarida]

Hi Gary,

Thank you very much for your kind answer. I'm working with NCO and CDO operators and I achieved to merge files with the next commands, although I'm missing the central part:
ncpdq -a nj,ni,time north.nc n1.nc
ncpdq -a nj,ni,time south.nc s1.nc
ncrcat s1.nc n1.nc r1.nc
ncpdq -a time,nj,ni r1.nc r1_out.nc

I attach a picture of the result r1_out.nc . Maybe adding the missing part with a mask would do... any help is welcome.

Thank you very much.

Best regards,

Marga

 

[strandwg]

I've created a file with all the grid information for the middle strip:

/glade/scratch/strandwg/cice_middle_strip.nc

Let me know if you can use it.

 

[Margarida]

Thank you very much Gary. I don't have access to glade, could you share this file? (my google account is margarida.samso@gmail.com)

Thank you very much.
Best regards,
Margarida Samsó

 

[strandwg]

Thank you very much Gary. I don't have access to glade, could you share this file? (my google account is margarida.samso@gmail.com)

Thank you very much.
Best regards,
Margarida Samsó

I apologize for the long delay; I've tried your technique and it doesn't work.