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Obtaining additional data packages

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additional_data additional_data

In addition to the enhancements of the model sources, OpenIFS/AC also requires additional external data to carry out forecast experiments (e.g. climatological data for boundary conditions, fluxes for emitted chemical compounds, etc). This data will complement the data found usually in the $OIFS_DATA_DIR location. The data volume for the standard distribution of OpenIFS/AC is approximately 21 GB. 

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• Unpack oifs-ac-43r3-initcond.tgz into /data/openifs-ac which results in a directory /data/openifs-ac/INITIAL-CONDITIONS.
  The files therein are initial data files for the first day of month for all 12 months of 2010.
• Unpack ICMCL-2010.tgz into /data/openifs-ac which results in a directory /data/openifs-ac/ICMCL.
  This directory contains monthly files with surface boundary conditions (e.g. SSTs, soil temps, albedos, LAI etc).
• From your conventional OpenIFS installation's OIFS_DATA_DIR copy the directories ifsdata and rtables to /data/openifs-ac/43r3 as they are also needed here.
• Further, create a directory /data/openifs-ac/43r3/wam which needs to contain wave model initial data for 2010-01-01.  (presently files are copied over from cca:/lus/snx11062/scratch/ms/nl/nm6/ECE-DATA/OPENIFS/43r3)

Building the model

This section describes how to build the binary model executable.

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At first the following environment variables need to be set to the appropriate locations. In our example above described in the Section 2.3 above these locations can be found in the OIFS_DATA_DIR under /data/openifs-ac: 

OIFS_ICMCL_DIR
This points to a directory containing initial conditions for the first day of all months of the year 2010 at Tl255L91. The ICMCL files contain boundary conditions (e.g. SSTs) for the entire month. 

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