Reconfiguration

Q How do I switch on the reconfiguration in FAMOUS?

To build the reconfiguration program:

In Sub-Model Independent → Modifications for the Reconfiguration

i) Select “compile & build”

ii) Ensure that you have the following mods included:

abort.mod

ctile6

dummy.mod

ibmf.mod

port_conv_f.mod

recon4837

timerupd_new.mod

To reconfigure the Atmosphere start file:

In Atmosphere → Ancillary and input data files → Start dump

Select “Using the reconfiguration”

To reconfigure an Ocean start file:

In Ocean GCM → Input Files → Start dump

Select “Using the reconfiguration”

Q What happens when FAMOUS reconfigures a UM start file?

The following Atmosphere fields differ (the Ocean is not affected):

23 : SNOW AMOUNT AFTER TIMESTEP KG/M2

24 : SURFACE TEMPERATURE AFTER TIMESTEP

31 : SEA ICE FRACTION AFTER TIMESTEP

32 : SEA ICE DEPTH (MEAN OVER ICE) M

49 : SEA-ICE TEMPERATURE AFTER TIMESTEP

407 : OPEN SEA SURFACE TEMP AFTER TIMESTEP

409 : SEA-ICE SURFACE TEMP AFTER TIMESTEP

412 : SEA ROUGHNESS LENGTH AFTER TIMESTEP

These results are from job xcbqe, an adtan-like job, with all ancillary fields set to be “not used”, i.e. those in:

Atmosphere → Ancillary and input data files

Ocean → Input Files

Plus energy adjustment switched off:

Atmosphere → Scientific Parameters and Sections → Section by section choices → Energy adjustment

To analyse the differences between the start files and reconfigured files, I used cumf

cumf file1 file2

To examine the actual differences, I used fieldop to subtract the values in one file from another.

fieldop -s file1 file2 fieldop.output

Or for example -t “26 222″ to subtract only the specified stashcodes. This produces a file which can be visualised using xconv. Note that if file1 contains fields which don’t exist in file2, it just copies file1’s field to the ouput file.

Page last modified on November 22, 2007, at 11:43 AM by annette