FAMOUS

FAMOUS Standard Versions

FAMOUS standard versions are identified by the UM runid of a control run on some platform. We recommend identifying versions of the model by the runid of a standard version to which they are scientifically equivalent. Equivalence is hard to define. For porting to HPCx, we used statistical tests made with IDL programs (available on request) on a number of fields from 100-year control runs. Porting to a new platform often introduces scientific differences, typically because of compiler-dependency, optimisation or unsafe code, so scientific equivalence must be checked carefully.

Where bugs are found post-release, they will be flagged here. In general, fixes will be included in the next release but not backported into older jobs. Bugs flagged up for any given version can be assumed to exist in all previous versions. More information on these issues and their fixes can usually be found on Robin’s old page, or more recently here.

Summary table of main standard versions

This table lists only the most important of the standard versions detailed in following sections. The major changes listed were in some cases introduced in intermediate standard versions that are not included in the table.

nameusesmajor changes
xfhcu/sWilliams et al. (2008), Williams et al. (2014)MOSES 2.2, friction on top-level winds, free-drift sea-ice, tuned by Jonny Williams (Bristol)
xfhccSmith (2012)xfxwb with friction on top-level winds instead of cap
xfxwbEMICmip (AR5), Smith (2012), Smith and Gregory (2012, about the last glacial cycle)bug-fix for coastal snow on sea-ice, cap on top-level winds
xdbuaSmith et al. (2008), Smith and Gregory (2009, about AMOC response to hosing), Balan Sarojini et al. (2011, UK THCMIP)ozone vertical profile improved, sea-ice albedo returned to alleviate cold bias at high N latitudes, orbital parameters can be set or computed conveniently, very long absolute filenames, HadOCC with Utopia, salinity conservation and iceberg calving recalibrated
adtanJones et al. (2005), Gregory (2010), Gregory and Tailleux (2011, actually used xbyvs), Oli Browne’s FAMOUS-Glimmer inception workoriginal version, MOSES 1, without HadOCC or salinity conservation

LATEST (Robin’s jobs, not strictly release versions yet. Job names may change)

xhkkg: MOSES2.2-BISICLES, unified Bristol/Reading format.

Development version of multi-layer snow, subgrid elevation tiles, mass-balance coupling to BISICLES icesheet

xfhcr: MOSES2.2/TRIFFID interactive CO2.

Full coupled carbon cycle FAMOUS. As used for NCAS Earth System summer schools

xfhcu/s: MOSES 2.2(/TRIFFID) tuning job (FAMOUS*).

These replace xdkub and xfhcy as the release candidate for the MOSES2.2 version of FAMOUS. Parameter values come from tuning by Jonny Williams in Bristol. xfhcu has fixed vegetation fields, xfhcs includes the TRIFFID dynamic vegetation model. In addition to MOSES2.2 - and hence a land-carbon cycle - this version also contains:

see Williams et al. (2012) and now Williams et al. (2014)

known bugs:

diagnostics of ocean vertical motion seem to be currently inaccurate

xfxwb/xeeae: EMICmip (AR5) control run.

This is basically a bug-fixed version of the xdbub release described in the 2008 GMD paper (see below). The 2008 GMD FAMOUS paper has been updated to reflect this version. xfxwb was run on the previous phase of HECToR, so cannot be used “as is” anymore. xeeae is a version ported to a linux server.

features

known bugs:

diagnostics of ocean vertical motion seem to be currently inaccurate

OLDER

xdkub: MOSES 2.2 tuning job.

known bugs:

The climate is considered not suitable for scientific use. This job has been released to allow users to do work themselves to improve the climate.
MEAD diagnostics don’t work @ Bristol or for the pgi compiler on HECToR
Zooplankton production diagnostic actually shows export calcite

Jobs for supported platforms can be found under owner annette on the puma UMUI:


xdbub: Includes UTOPIA and HadOCC. This job has the same physical climate as xcpsa below, but much improved marine biogeochemistry from the HadOCC component. HadOCC tracers are now advected with the 3rd order flux-limited UTOPIA scheme, and air-sea CO2 fluxes are much better. This release corresponds to the model write up published in Geoscientific Model Development 1, 53-68, 2008. A few extra bits of climate analysis can be found on the xdbub_extra page.

known bugs:

Snow on land at coastal points is overwritten by the snow lying on the sea-ice fraction of that point. Implies a warm bias around Greenland and Antarctica.
Surface sensible heat and moisture fluxes are swapped at the end of SFFLUX5A. Doesn’t seem to have a large influence on the climate - causes a small northern hemisphere warming in winter?
Running with HadOCC off does undefined things with the solar absorption in the ocean surface. Doesn’t seem to have a serious climate effect on the platforms it has run on.
Updating land surface ancils during a run is broken.
MEAD diagnostics don’t work @ Bristol or for the pgi compiler on HECToR.
Bounds checking error in PPHEAD1A (not related to LBLEV issue) - a STASHmaster issue, we think.
Zooplankton production diagnostic actually shows export calcite

Standard jobs for supported platforms can be found under owner annette on the puma UMUI, and will remain fixed.

There is also a standard job with HadOCC off:

All FAMOUS input data, mods, STASHmasters and post-processing scripts are stored on puma in /home/famous/.


xcpsa: Incorporates a number of climate tunings and additional features. Most notably, the high northern latitude cold bias of previous versions is much improved. Plots and more detailed documentation can be found here: http://cgam.nerc.ac.uk/pmwiki/FAMOUS/index.php/Main/Dec07. A few extra bits of climate analysis relevant to this model can be found on the xdbub_extra page.

known bugs:

Running with HadOCC off (the released configuration) does undefined things with the solar absorption in the ocean surface. Doesn’t seem to have a serious climate effect on the platforms it has run on.
Salinity correction needs tweaking for guaranteed correct performance on all PE configurations
MEAD diagnostics don’t work @ Bristol

“Standard jobs” for supported platforms. These can be found under the username annette on the puma umui, and will be kept up to date with technical fixes.

FAMOUS files are now stored on NCAS’s UM server, puma, under the directory /home/famous. We would encourage FAMOUS users to register for this service. For more information, contact NCAS-CMS.

HPCx (xbyva=xcpsa) and QUEST (xbyvq=xcpsb) results have been statistically compared as for the adtan comparisons below. Download the results of statistical comparison and accompanying plots. As noted in the caveats, there appears to be a small salinity drift issue on QUEST that can be seen in these comparison plots.


xcggb: New version of salinity correction - two minor bugfixes, correction also applied to the surface virtual fluxes of TCO2 and Alkalinity due to P-E+R (if HadOCC is switched on). The corrections are now STASHed in units of <tracer units> per second, rather than <tracer units> per timestep, so restarts that used the old scheme will have screwy corrections for the first year.

known bugs:

Salinity correction still not quite right. All of the changes to the salinity correction mod have very small effects, and it’s difficult to tell as the model as a whole doesn’t perfectly conserve water anyway.
MEAD diagnostics don’t work @ Bristol

Download (14/06/07)

Tested on quest cluster (Bristol).


xbyvs: adtan with salinity drift corrected. (Standard job for HPCx is xcgga in the Reading UMUI.) Model largely as adtan (Jones et al., 2005) but includes a volume-uniform time-dependent correction to conserve water in the open oceans to cancel the drift from the rigid-lid salt-flux representation of ocean surface water fluxes. Isolated inland seas are not affected by this fix: their runaway salinities due to local P-E+R imbalance are simply capped at 0 or 50.

known bugs:

The salinity correction mod isn’t quite right, and xbyvs is now not recommended for use (see xcggb above).Further discussion

Validation note

Download (23/03/07)

Tested on ormen (Bristol).


adtan: The phase 5 tuning of Jones et al. (2005)

known bugs:

there is a bug in the Mead diagnostics. - NB this is now “fixed”. If meadlengths.mod is still enabled in your version, turn it off
LBLEV may not be set correctly in ocean 3D fields (this is OK on HPCx but not our Linux platform).
packing is switched off in PP output because some problems were found in ocean temperature fields as a result of the combination of packing and the presence of very large salinity values in inland seas.

Download (15/01/07)

Note that

Page last modified on January 19, 2016, at 10:38 PM by robin