ASIS:Main

Ice sheet model development

 * An overview of ice sheet modelling written by Tony P for distribution to interested parties (in the first instance this was for the CHOMBO team).

Ice flow solver
Discuss the numerical implementation of solvers for:
 * Thickness.
 * Flow.
 * Temperature.
 * Basal hydrology.
 * Ancillary solvers (e.g. vertical velocity).

code development
Development strategy for various aspects of the project to be discussed here.
 * We intend to implement nested grids.
 * If we move the solvers to a set of libraries we'll need to define an API.
 * The glimmer ice sheet model may require further development in order to build in the higher order code from glam and to allow for nested grids.
 * A bit about debugging and development environments

surface mass balance

 * Day-degree model
 * Energy balance model

Ice-ocean interaction

 * Comments on plume model.

Ice sheet model - ESM/GCM coupling
The icesheet model will provide an interface for coupling to climate and earth systems models, probably making use of glimmer. In particular, the ice sheet model will be coupled to the Hadley Centre and Los Alamos GCMs.


 * Existing FAMOUS/GLIMMER interface for coupling

Observational data


Descriptions of the data sets will be provided here, along with links to the data themselves.

I have uploaded some figures and some metadata for the datasets. The figures are only working figures to show the data, please do not use these figures for anything official! None of the datasets are finalised, they are displayed here for discussion purposes. Feel free to comment on them. I have drawn some figures of Jon Bamber's bed elevation, ice shelf thickness and mask datasets as I received them as well.

Anne


 * Surface Elevation
 * Bed Elevation
 * Bathymetry
 * Ice Thickness
 * Velocity
 * Geology
 * Mask

Boundary conditions

 * Surface air temperature
 * Precipitation
 * Geothermal Heat Flux

At right is a plot from Anne showing velocity profiles down key Antarctic outlet glaciers. You can find a full sized version here.

Other
As of July 28th I have provided Anne Le Brocq with a zip file which contains: surface, bedrock, shelf thickness and a ocean/ice mask at 5 km resolution for whole continent. Please read the README file included and make sure you are happy with the conditions of use.

Jonathan Bamber.

Meetings
Next meeting will be held in Durham during the week starting 27th October 2008.

Minutes of project meeting, 3rd June 2008, Cambridge

Minutes of ice sheet - climate model coupling meeting, 8th April 2008, Reading

Minutes of project meeting, 19th March 2008, UCL

Minutes of Community Ice Sheet Model development workshop, 18-20th August 2008, LANL

Wiki usage

 * using this wiki

Users

 * Who uses this wiki?