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  • Created 01 Jul 2022

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initMIP Antarctica

Version 21
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Version 22
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1 [[Image(ice_sheet_image_thin.png)]]
2
3 == initMIP Overview: Focus on initialization ==
4 Earlier large-scale ice sheet experiments e.g. those run during the '''ice2sea''' and '''!SeaRISE''' initiatives have shown that ice sheet initialization can have a large effect on sea-level projections and gives rise to important uncertainties. Improving initialization techniques is currently a field of active research, which makes it difficult to prescribe one technique as the method of choice for ISMIP6. Instead, we first propose a “Come as you are”- approach, which allows participants to contribute with their currently used model setup and initialization technique for intercomparison (initMIP). This, we hope, allows getting modelers involved early in the ISMIP6 process and keeps the workload for participants as low as possible. Furthermore, the proposed schematic experiments may facilitate to document on-going model development. Starting early in the CMIP6 process implies relying on schematic forcing for the initiation experiments that is independent from CMIP6 AOGCM output, which will only become available later on. As accurately modeling Antarctica at continental scale remains challenging, we offer groups interested in participating but unable to run the entire Antarctic ice sheet to focus on specified basins instead. The initMIP-Antarctica is the first in a series of ISMIP6 ice sheet model intercomparison activities and is led by Helene Seroussi.
5
6 === Goals ===
7 * Compare and evaluate the initialization methods used in the ice sheet modeling community
8 * Estimate uncertainty associated with initialization
9 * Get the ice sheet modeling community started with ISMIP6 activities
10 * Document on-going model development, as the simple experiments could be repeated with new model versions
11
12 ----
13 ==initMIP Antarctica Experimental setup ==
14
15 Experiments are for the large scale or regional Antarctic ice sheet and are designed to allow intercomparison between models of:
16
17
18 '''(1) the initial state itself''' and '''(2) the response in three schematic forward experiments''':
19
20 # `init`: Initialization to present day with method of choice
21 # '''Schematic forward experiments'''
22 * `2a. ctrl`: Unforced control run (100 years)
23 * `2b. asmb`: Prescribed schematic surface mass balance anomaly (100 years)
24 * `2c. abmb`: Prescribed schematic basal melting anomaly under floating ice (100 years)
25
26 The three forward experiments serve to evaluate the initialization in terms of model drift (`2a. ctrl`) and response to perturbations (`2b. asmb` and `2c. abmb`). For `2a. ctrl`, the models are run forward without any anomaly forcing, such that whatever surface mass balance (SMB) was used in the initialization technique would continue unchanged. The perturbation in `2b. asmb` consists of a given surface mass balance anomaly, which has to be applied relative to the initial SMB inherent to the individual initialization technique. The SMB anomaly in `2b. asmb` (the same for each model) is schematic and should not be considered as a realistic projection. The perturbation in `2c. abmb` consists of a given basal melting anomaly, which has to be applied relative to the initial basal melting inherent to the individual initialization technique and should be applied only to floating ice at any given time of the simulation. The basal melting anomaly for floating ice in `2c. abmb` is schematic and should not be considered as a realistic projection. The core experiment duration is set to 100 years.
27
28 ----
29 == Regional models ==
30
31 As accurately modeling the entire Antarctic ice sheet remains challenging, we offer groups the option to focus instead on modeling one or more of '''five regional basins''':
32
33 * Amundsen Basin
34
35 * Amery Basin
36
37 * Wilkes Land
38
39 * Ronne-Filchner Basin
40
41 * Ross Ice Shelf Basin
42
43 Experiments and parameters for the regional models are similar to the continental scale models. Interested participants can submit results for any basin. Results should be reported on the '''same grid as continental scale models''' to simplify the analysis. Shapefiles with suggested extent of the regional models (starting from the observed ice divide position and consistent with the basins used in the IMBIE2 effort).
44
45 ----
46
47 == Requirements for the experiments ==
48
49 # Participants can and are encouraged to contribute with different models and/or initialization methods.
50 # Participants can contribute with continental scale models and/or regional models for the regional basins chosen.
51 # Models have to be able to prescribe a given SMB anomaly.
52 # Models have to be able to prescribe a given basal melting anomaly under the floating ice only.
53 # No adjustment of SMB due to geometric changes in forward experiments (i.e. no elevation - SMB feedback is allowed)
54 # No bedrock adjustment in forward experiment
55 # The choice of model input data is unconstrained to allow participants the use of their preferred model setup without modification. Modelers without preferred data set choice can have a look at the ISMIP6 [[Datasets]] page for possible options.
56 # The specific year of initialization (between 1950 and 2014) is equally unconstrained to allow the use of different observational data sets that may be tied to certain time periods.
57
58 ----
59 == Prescribed SMB anomaly ==
60
61 The SMB anomaly can be obtained through the ISMIP6 datasets distributed via the Ghub Globus web application. See the instructions document at the end of this wiki. Modeling groups should use the 1 km version to conservatively interpolate to their model native grid (see '''Appendix 1''', below).
62
63 For experiment `2b. asmb`, the amplitude of the SMB anomaly is to be implemented as a time dependent function, which increases step-wise every full year (it is therefore independent of the time step in the model):
64
65
66 `SMB(t) = SMB_initialization + SMB_anomaly * (floor (t) / 40)`; for 0 < t < 40 in years
67
68 `SMB(t) = SMB_initialization + SMB_anomaly * 1.0`; for t > 40 years
69
70 where `SMB_anomaly` is the anomaly provided by ISMIP6 and `SMB_initialization` is the model specific SMB used for the initialization.
71
72 The units of SMB_anomaly are (meter ice equivalent/year) with an assumed density of 910 kg/m^3^ and 31,556,926 s/yr.
73
74 ----
75 == Prescribed basal melt anomaly under floating ice ==
76
77 The basal melt anomaly can be obtained via the Ghub Globus endpoints web application on a 1 km grid. Basal melt anomalies are uniform across a basin to accommodate all the possible initial grounding line positions. These anomalies are somewhat similar to the observed basal melt under floating ice, so they lead to a doubling of the ocean induced melting after 40 years for models with initial basal melting close to today's observations.
78
79 For experiment `2c. abmb`, the amplitude of the basal melt anomaly is to be implemented as a time dependent function, similar to experiment `2b. abmb` The amplitude of the function applied increases step-wise every full year (it is therefore independent of the time step in the model):
80
81
82 `basal_melt(t) = basal_melt_model + basal_melt_anomaly * (floor (t) / 40)`; for 0 < t < 40 in years
83
84 `basal_melt(t) = basal_melt_model + basal_melt_anomaly * 1.0`; for t > 40 years
85
86
87 where `basal_melt_anomaly` is the anomaly provided by ISMIP6 and `basal_melt_model` is the model specific basal_melt. The anomaly should only be applied on floating ice and should be applied on all floating ice, so that area newly ungrounded should include this anomaly on top of the basal melt applied for the ''ctrl'' run (e.g. depth dependent parameterization) as soon as the ice starts floating. The basal melt anomaly is defined over the entire '''Antarctic grid''' (see '''figure''' below), so newly ungrounded areas or ice front advances should also apply this anomaly as long as the ice is freely floating. The units of basal_melt_anomaly are (meter ice equivalent/year) with an assumed density of 910 kg/m^3 and 31,556,926 s/yr.
88
89 Unlike the SMB forcing, the `basal melt anomaly` is constant per regional basins, so conservative interpolation is not needed and the basal melt anomaly applied should simply equal the value prescribed for each basin. Several version of this anomaly with different grid resolutions (1 km, 2 km, 4 km, 8 km, 16 km and 32 km) are available on the Ghub Globus endpoints web application
90
91 [[Image(init_Antarctic_BasalMelt.jpg, 600px, align=center)]]
92
93 == Specific uncertainty analysis ==
94
95 At a later stage and informed by the diversity and similarities of participating models, ISMIP6 will suggest further experiments to explicitly address certain aspects of uncertainty in the initialization. It is hoped that participating groups will contribute to these additional experiments, which apply specific perturbations to the initializations.
96 These would take the form of repeating the experiments with systematic perturbations of the initialization choices, for example:
97
98 * Boundary conditions and other datasets
99 * Parameters
100 * Model structure
101 * Methods and judgments, e.g. tolerance for data mismatch or drift
102
103 ----
104 ==Appendix 1 – Output grid definition and interpolation==
105 All 2D data is requested on a regular grid with the following description. Polar stereo-graphic projection with standard parallel at 71° S and a central meridian of 0° W on datum WGS84. The lower left corner is at (-3,040,000 m, -3,040,000 m) and the upper right at (3,040,000 m, 3,040,000 m). This is the same grid used to provide the SMB and basal melting anomaly forcings. The output should be submitted on a resolution adapted to the resolution of the model and can be 32 km, 16 km, 8 km, 4 km, 2 km or 1 km. The data will be stored on this resolution for archiving and conservatively interpolated on a 8 km resolution for diagnostic processing by ISMIP6. Output should be provided with single precision.
106
107 If interpolation is required in order to transform the SMB forcing (1 km grid data) to your native grid, and transform your model variables to the initMIP output grid (32 km, 16 km, 8 km, 4 km, 2 km, 1 km), it is required that conservative interpolation is used. The motivation for using a common method for all models is to minimize model to model differences due to the choice of interpolation method.
108
109 ===A1.1 Regridding Tools and Tips===
110 -
* An overview of the regridding process can be found on the [[Regridding]] page.
+
* An overview of the regridding process can be found on the two Regridding pages below.
111 -
* [[Regridding_with_CDO]] contains tools and tips that have been used by ISMIP6 members.
+
* [https://theghub.org/groups/ismip6/wiki/RegriddingwithCDO Regridding with CDO] contains tools and tips that have been used by ISMIP6 members
112 -
* If you need help with conservative interpolation, please email ismip6-at-gmail.com.
+
* [https://theghub.org/groups/ismip6/wiki/RegriddingBISICLESoutputwithESMFandNCO Regridding BISICLES output with ESMF and NCO] contains other tools and tips
113 +
* ISMIP6 is designing tools to help with the regridding.
114 +
* If you need help with conservative interpolation, please email ismip6@gmail.com.
115
116 ----
117 ==Appendix 2 – Naming conventions, upload and model output data==
118 '''Please provide:'''
119
120 * one variable per file for all 2D fields (no need to provide coordinates)
121 * all variables in one file for the scalar variables
122 * a completed readme file
123 * single precision should be used for all output
124
125 ===A2.1 File name convention===
126 File name convention for '''2D fields''':
127
128 `____.nc`
129
130 File name convention for '''scalar variables''':
131
132 `scalar____.nc`
133
134 File name convention for '''readme file''':
135
136 `README___.doc`
137
138 where
139
140 `` = netcdf variable name (e.g. lithk)
141
142 `` = ice sheet (AIS or GIS)
143
144 `` = group acronym (all upper case or numbers, no special characters)
145
146 `` = model acronym (all upper case or numbers, no special characters)
147
148 `` = experiment name ('''''init''''', '''''ctrl''''', '''''asmb''''', or '''''abmb''''')
149
150 For example, a file containing the scalar variables for the Antarctic ice sheet, submitted by group “JPL” with model “ISSM” for experiment “ctrl” would be called:
151 scalar_AIS_JPL_ISSM_ctrl.nc
152
153 If JPL repeats the experiments with a different version of the model (for example, by changing the sliding law), it could be named ISSM2, and so forth.
154
155
156 ===A2.2 Accessing ISMIP6 datasets and submitting model experiments to Globus===
157
158 ISMIP6 datasets are distributed via the Ghub Globus web application. Public datasets can be found in Ghub's [https://theghub.org/dataset-listing Browse Data] page. ISMIP6-specific initMIP Antarctic (and initMIP Greenland and projection data) can be accessed through the Ghub endpoints via Globus UI. To access and download data, one must create a Ghub account and register with Globus. Instructions to create accounts can be referenced in the '''General ISMIP6 Globus Instructions (v. 2023)''' instruction document at the end of this wiki.
159
160 The document provides instructions on how to use Globus to download Ghub data in general, including the ISMIP6 datasets distributed via Ghub. These datasets are from earlier ISMIP6 activities, such as the initMIP, ABUMIP or projections to 2100. ISMIP6 and GHub is partnered with UB CCR to provide access to large datasets. These datasets are described in detail on our Browse Data page. If you have any questions or issues, please contact us by email at ismip6-at-gmail.com. Please also check the suggested text to acknowledge the many scientists and organizations that made the ISMIP6 data possible.
161
162 All your model experiments can be uploaded via Globus/Ghub. See more details on Ghub's [https://theghub.org/accessing-data-with-globus Accessing Data] wiki. Email ismip6@gmail.com with any questions concerning the above.
163
164 ----
165
166 ===A2.3 Model output variables and README file===
167
168 The README file is an important contribution to the initMIP submission. It may be obtained [https://www.dropbox.com/s/2zg2bd1ag6y9v6c/README_AIS.docx?dl=0|| here] or requested by email to ismip6-at-gmail.com
169
170 The variables requested in the table below serve to evaluate and compare the different models and initialization techniques. Some of the variables may not be applicable for your model, in which case they are to be omitted (with explanation in the README file).
171
172 We distinguish between state variables (ST) (e.g. ice thickness, temperatures and velocities) and flux variables (FL) (e.g. SMB). State variables should be given as snapshot information at the end of one year (for scalars variables) and five year periods (for '''2D variables''', see table below), while flux variables are to be averaged over the respective periods. Please specify in your README file how your reported flux data has been averaged over time. Ideally, the standard would be go average over all native time steps.
173
174 Flux variables are defined positive when the process adds mass to the ice sheet and negative otherwise.
175
176 Time should be defined in seconds since the beginning of the run (e.g., units should be "seconds since 2007-01-01 00:00:00").
177
178
179 ||'''Variable''' ||'''Dim''' ||'''Type''' ||'''Variable Name''' ||'''Standard Name''' ||'''Units ''' ||'''Comment''' ||
180 ||||||||||||||'''''2D variables requested every five years, starting at t=0, snapshots for type ST and as five year average for type FL.''''' ||
181 ||Ice thickness||x,y,t||ST||lithk||land_ice_thickness||m||The thickness of the ice sheet||
182 ||Surface elevation||x,y,t||ST||orog||surface_altitude||m||The altitude or surface elevation of the ice sheet||
183 ||Base elevation||x,y,t||ST||base||base_altitude||m||The altitude of the lower ice surface elevation of the ice sheet||
184 ||Bedrock elevation||x,y,t||ST||topg||bedrock_altitude||m||The bedrock topography (unchanged in forward exps.) ||
185 ||Geothermal heat flux ||x,y ||C ||hfgeoubed ||upward_geothermal_heat_flux_at_ground_level ||W m^-2^ ||Geothermal Heat flux (unchanged in forward exps.)||
186 ||Surface mass balance flux ||x,y,t ||FL ||acabf ||land_ice_surface_specific_mass_balance_flux ||kg m^-2^ s^-1^ ||Surface Mass Balance flux||
187 ||Basal mass balance flux ||x,y,t ||FL ||libmassbf || land_ice_basal_specific_mass_balance_flux ||kg m^-2^ s^-1^ ||Basal mass balance flux ||
188 ||Ice thickness imbalance ||x,y,t ||FL ||dlithkdt ||tendency_of_land_ice_thickness ||m s-1 ||dHdt||
189 ||Surface velocity in x ||x,y,t ||ST ||uvelsurf ||land_ice_surface_x_velocity ||m ^s-1^ ||u-velocity at land ice surface||
190 ||Surface velocity in y ||x,y,t ||ST ||vvelsurf ||land_ice_surface_y_velocity ||m ^s-1^ ||v-velocity at land ice surface||
191 ||Surface velocity in z ||x,y,t ||ST ||wvelsurf||land_ice_surface_upward_velocity ||m ^s-1^ ||w-velocity at land ice surface||
192 ||Basal velocity in x ||x,y,t ||ST ||uvelbase ||land_ice_basal_x_velocity ||m ^s-1^ ||u-velocity at land ice base||
193 ||Basal velocity in y ||x,y,t ||ST ||vvelbase ||land_ice_basal_y_velocity ||m ^s-1^ ||v-velocity at land ice base||
194 ||Basal velocity in z ||x,y,t ||ST ||wvelbase ||land_ice_basal_upward_velocity ||m ^s-1^ ||w-velocity at land ice base ||
195 ||Mean velocity in x ||x,y,t ||ST ||uvelmean ||land_ice_vertical_mean_x_velocity ||m ^s-1^ ||The vertical mean land ice velocity is the average from the bedrock to the surface of the ice ||
196 ||Mean velocity in y ||x,y,t ||ST ||vvelmean ||land_ice_vertical_mean_y_velocity ||m ^s-1^ ||The vertical mean land ice velocity is the average from the bedrock to the surface of the ice ||
197 ||Surface temperature ||x,y,t ||ST ||litempsnic ||temperature_at_ground_level_in_snow_or_firn ||K ||Ice temperature at surface ||
198 ||Basal temperature ||x,y,t ||ST ||litempbot ||land_ice_basal_temperature ||K ||Ice temperature at base ||
199 ||Basal drag ||x,y,t ||ST ||strbasemag ||magnitude_of_land_ice_basal_drag ||Pa ||Magnitude of basal drag ||
200 ||Calving flux ||x,y,t ||FL ||licalvf ||land_ice_specific_mass_flux_due_to_calving ||kg m^-2^ s^-1^ ||Loss of ice mass resulting from iceberg calving. Only for grid cells in contact with ocean||
201 ||Grounding line flux ||x,y,t ||FL ||ligroundf ||land_ice_specific_mass_flux_at_grounding_line ||kg m^-2^ s^-1^ ||Loss of grounded ice mass resulting at grounding line. Only for grid cells in contact with grounding line ||
202 ||Land ice area fraction ||x,y,t ||ST ||sftgif ||land_ice_area_fraction ||1 ||Fraction of grid cell covered by land ice (ice sheet, ice shelf, ice cap, glacier) ||
203 ||Grounded ice sheet area fraction ||x,y,t ||ST ||sftgrf ||grounded_ice_sheet_area_fraction ||1 ||Fraction of grid cell covered by grounded ice sheet, where grounded indicates that the quantity correspond to the ice sheet that flows over bedrock||
204 ||Floating ice sheet area fraction ||x,y,t ||ST ||sftflf ||floating_ice_sheet_area_fraction ||1 ||Fraction of grid cell covered by ice sheet flowing over seawater ||
205 ||||||||||||||'''''Scalar outputs requested every full year, as snapshots for type ST as 1 year averages for type FL. The t=0 value should contain the data of the initialization.'''''||
206 ||Total ice mass ||t ||ST ||lim ||land_ice_mass ||kg ||spatial integration, volume times density ||
207 ||Mass above floatation ||t ||ST ||limnsw ||land_ice_mass_not_displacing_sea_water ||kg ||spatial integration, volume times density ||
208 ||Grounded ice area ||t ||ST ||iareag ||grounded_ice_sheet_area ||m^2^ ||spatial integration ||
209 ||Floating ice area ||t ||ST ||iareaf ||floating_ice_shelf_area ||m^2^ ||spatial integration||
210 ||Total SMB flux ||t ||FL ||tendacabf ||tendency_of_land_ice_mass_due_to_surface_mass_balance ||kg s^-1^ ||spatial integration ||
211 ||Total BMB flux ||t ||FL ||tendlibmassbf ||tendency_of_land_ice_mass_due_to_basal_mass_balance ||kg s^-1^ || spatial integration ||
212 ||Total calving flux ||t ||FL ||tendlicalvf ||tendency_of_land_ice_mass_due_to_calving ||kg s^-1^ ||spatial integration ||
213 ||Total grounding line flux ||t ||FL ||tendligroundf ||tendency_of_grounded_ice_mass ||kg s^-1^ ||spatial integration||
214
215 ----
216 ==Appendix 3 – Participating Models and Characteristics==
217 ===Antarctica Standalone Ice Sheet Modeling===
218
219 ===Model Characteristics===
220
221 ||'''Model''' ||'''Numerics''' ||'''Ice Flow''' ||'''Initialization''' ||'''Initial Year''' ||'''Initial SMB''' ||'''Basal Sliding''' ||'''Initial Grid (km)''' ||
222 ||ARC PISM1, PISM2 ||FD ||HYB ||SP ||2000 ||RA2 ||PL ||16 ||
223 ||AWI PISM1Eq, PISM1Pal, PISM2Eq, PISM2Pal ||FD ||HYB ||SP ||2000 ||RA2.3 ||NP ||16 ||
224 ||CPOM BISICLES PRELIM ||FV ||SSA ||DA ||2010 ||None ||CL ||1-8 ||
225 ||ILTS SICOPOLIS ||FD ||SIA/SSA ||SP ||1990 ||Arth. ||WS ||8 ||
226 ||IMAU IMAUICE64 ||FD ||SSA ||SP ||2005 ||RA2.3 ||VS ||64 ||
227 ||JPL1 ISSM ||FE ||SSA ||DA ||2007 ||RA2 ||WS ||1-50 ||
228 ||PSU EQNO MEC ||FD ||HYB ||DA+ SP ||2007 ||PDD ||WS ||16 ||
229 ||PSU GLNO MEC ||FD ||HYB ||SP ||2007 ||PDD ||WS ||16 ||
230 ||UCIJPL ISSM ||FE ||HO ||DA ||2007 ||RA2 ||WS ||3-50 ||
231 ||ULB FETISH ||FD ||HYB ||DA+ SP ||2000 ||MAR ||WS ||32 ||
232 ||VUB AISMPALEO ||FD ||SIA/SSA ||SP ||2000 ||PDD ||WS ||20 ||
233
234 |||||||||||||||| '''Key''' ||
235 ||'''Numerical method:''' ||||||||||||||'''FD'''= Finite difference, '''FE'''= Finite element, '''FV'''= Adaptive mesh refinement ||
236 ||'''Ice flow:''' ||||||||||||||'''SIA'''= Shallow ice approximation, '''SSA'''= Shallow shelf approximation, '''HO'''= Higher order, '''HYB'''= Hybrid SIA-SSA ||
237 ||'''Initialization:''' ||||||||||||||'''DA'''= Data Assimilation, '''SP'''= Spin up ||
238 ||'''Initial SMB:''' ||||||||||||||'''RA2'''= RACMO2.1, '''RA2.3'''= RACMO2.3, '''PDD'''= Positive Degree Day Model, '''MAR'''= MAR ||
239 ||'''Basal sliding:''' ||||||||||||||'''PL'''=Pseudo-plastic, '''NP'''=Nearly Plastic, '''VS'''= Viscous Sliding, '''WS'''= Weertman Sliding ||
240
241 [[Image(ice_sheet_image_thin_2.png)]]
242 ----
243 ||'''Contributors''' ||'''Model''' ||'''Group ID'''||'''Group''' ||
244 ||[http://www.victoria.ac.nz/antarctic/about/staff/nick-golledge Nick Golledge] ||PISM ||ARC ||Antarctic Research Centre, Victoria University of Wellington, NZ ||
245 ||[http://www.awi.de/en/about-us/organisation/staff/thomas-kleiner.html Thomas Kleiner], [http://www.awi.de/en/about-us/organisation/staff/johannes-sutter.html Johannes Sutter], [https://www.awi.de/ueber-uns/organisation/mitarbeiter/angelika-humbert.html Angelika Humbert] ||PISM ||AWI ||Alfred Wegener Institute for Polar and Marine Research, DE /University of Bremen, DE ||
246 ||[http://www.bristol.ac.uk/geography/people/stephen-l-cornford/index.html Stephen Cornford] ||BISICLESPRELIM ||CPOM ||University of Bristol, Centre for Polar Observation and Modelling, UK ||
247 ||Christian Rodehacke ||PISM0 ||DMI ||Danish Meteorological Institute, Arctic and Climate, DK ||
248 ||[http://lgge.osug.fr/spip.php?page=personnel&id_user=7130&id_article=274&lang=en Fabien Gillet-Chaulet]||ELMER ||IGE ||Laboratoire de Glaciologie et Géophysique de l’Environnement, FR ||
249 ||[http://wwwice.lowtem.hokudai.ac.jp/~greve/ Ralf Greve] ||SICOPOLIS ||ILTS ||Institute of Low Temperature Science, Hokkaido University, Sapporo, JP ||
250 ||[https://www.uu.nl/staff/HGoelzer/0 Heiko Goelzer], [https://www.uu.nl/staff/RSWvandeWal Roderik van de Wal], [https://www.uu.nl/staff/TJReerink/0 Thomas Reerink] ||IMAUICE ||IMAU ||Utrecht University, Institute for Marine and Atmospheric Research (IMAU), Utrecht, NL ||
251 ||Nicole Schlegel, [https://science.jpl.nasa.gov/people/HSeroussi/ Helene Seroussi] ||ISSM ||JPL ||NASA Jet Propulsion Laboratory, Pasadena, USA ||
252 ||Stephen Price, Matthew Hoffman, Tong Zhang ||MALI ||LANL ||Los Alamos National Laboratory, Los Alamos, USA ||
253 ||[https://sites.google.com/site/aurelienquiquet/ Aurélien Quiquet], [https://www.lsce.ipsl.fr/Phocea/Membres/Annuaire/index.php?uid=dumas Christophe Dumas] ||GRISLI ||LSCE ||Laboratoire des Sciences du Climat et de l’Environnement,Université Paris-Saclay, France ||
254 ||[https://www.researchgate.net/profile/W_Lipscomb William Lipscomb], Gunter Leguy ||CISM ||NCAR ||National Center for Atmospheric Research, Boulder, CO, USA ||
255 ||Torsten Albrecht ||PISM3PAL ||PIK ||Potsdam Institute for Climate Impact Research, DE ||
256 ||David Pollard ||EQNOMEC, GLNOMEC ||PSU ||Pennsylvania State University EMS Earth and Environmental Systems Institute, Pennsylvania, USA ||
257 ||Helene Seroussi, Mathieu Morlighem ||ISSM ||UCIJPL ||NASA Jet Propulsion Laboratory, Pasadena, USA / University of California Irvine, Irvine, USA ||
258 ||[http://dev.ulb.ac.be/glaciol/sainan.html Sainan Sun], [http://dev.ulb.ac.be/glaciol/frank.html Frank Pattyn] ||FETISH ||ULB ||Laboratoire de Glaciologie, Université Libre de Bruxelles, Brussels, BE ||
259 ||Jonas Van Breedam, Philippe Huybrechts ||AISMPALEO ||VUB ||Vrije Universiteit Brussel, Brussels, BE ||
260
261
262 General ISMIP6 Globus Instructions (v. 2023): [[File(Globus_Instructions_ismip6_general_June2023.docx)]].
263
264
265 [[Image(ice_sheet_image_thin_2.png)]]