[ecco-support] [EXTERNAL] Reading input files for llc90

[Fenty, Ian G (US 329C)]

Hi Spencer,

>> I was just wondering if anyone has code to open and plot LLC90 input files (the ones that are in the LLC native grid like 'GRACE_jpl_rl05m_withland_noNaN_2008').

The answer is definitely yes, and now there is an example of its use in the new tutorial “Loading LLC compact binary files”

https://ecco-v4-python-tutorial.readthedocs.io/ECCO_v4_Loading_LLC_compact_binary_files.html

The key routine is ‘read_llc_to_tiles’.  It reads the llc compact format binary files in the ‘and converts to a numpy ndarrays of dimension up to [nt, nk, 13 (tiles), llc x llc].

The tutorial also shows how to convert these ndarrays to xarray DataArrays.

Another example of the use of ‘read_llc_to_tiles’ can be seen in the nice new tutorial that Jan Erik Tesdal put together on closing the heat budget:
https://ecco-v4-python-tutorial.readthedocs.io/ECCO_v4_Heat_budget_closure.html

Look for the lines related to the geothermal heat flux.  The geothermal heat flux file is in the llc compact format.

Hope this helps!

-Ian



From: <ecco-support-bounces at mit.edu> on behalf of Spencer Jones <spencerj at ldeo.columbia.edu>
Reply-To: "ECCO support list, wider membership" <ecco-support at mit.edu>
Date: Monday, August 3, 2020 at 1:52 PM
To: "ecco-support at mit.edu" <ecco-support at mit.edu>
Subject: [EXTERNAL] [ecco-support] Reading input files for llc90

Hi,
I was just wondering if anyone has code to open and plot LLC90 input files (the ones that are in the LLC native grid like 'GRACE_jpl_rl05m_withland_noNaN_2008'). I always have trouble plotting faces above face=7, and I seem to remember that a couple of grid points are removed somewhere but I can't find that information anywhere now.

Python would be ideal, but matlab will be ok too if you can point me to the exact line that does this.
Thanks very much,
Spencer
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