For this 408k simulation, the climate forcing from LOVECLIM (atmospheric temperature, precipitation, ocean temperature) was replaced with the parameterized climate forcing originally used in Pollard & DeConto (2009), and later updated in Pollard & DeConto (2012).
Dataset doi: 10.22741/iccp.20180006
Longitude: 0.000°E to 359.600°E
Latitude: -90.000°N to -60.400°N
Volume: 3.6GB
Contact: Elke Zeller
Last updated: 2018-06-28 15:13
Related publications:
Local insolation changes enhance Antarctic interglacials: Insights from an 800,000-year ice sheet simulation with transient climate forcing, M Tigchelaar, A Timmermann, D Pollard, T Friedrich, M Heinemann, Earth and Planetary Science Letters, 495, 69-78, doi: 10.1016/j.epsl.2018.05.004 (2018)
Modelling West Antarctic ice sheet growth and collapse through the past five million years, Pollard, D., & DeConto, R. M. Nature, 458(7236), 329, doi:10.1038/nature07809 (2009)
Description of a hybrid ice sheet-shelf model, and application to Antarctica, Pollard, D., & DeConto, R. M., Geoscientific Model Development, 5(5), 1273. doi: 10.5194/gmd-5-1273-2012 (2012)
Note: This model used a polar stereographic grid. To fascillitate analysis using we regridded the data. Regridding was done using CDO Bilinear Grid Interpolation.
Data access via GrADS OPeNDAP
Variables:
| Name | Long name | Units |
|---|---|---|
| mtime | model time | kyr B.P. |
| lon | longitude | degrees_east |
| lat | latitude | degrees_north |
| basefrml | basal freezing rate | m/y |
| baseperc | percolation to base | m/y |
| budgall | net budget | m/y |
| budgmelt | surface melt | m/y |
| budgrain | rainfall | m/y |
| budgsnow | snowfall | m/y |
| calvice | calvice rate | m/y |
| calviceav | average calvice rate | m/y |
| cliffmelt | cliffmelt rate | m/y |
| clifmeltav | average cliffmelt rate | m/y |
| darea | cell area, h-grid | m^2 |
| deflect | lithospheric deflection | m |
| elevmelt | elevation of internal melt pt. | m |
| facemelt | facemelt rate | m/y |
| facemeltav | average facemelt rate | m/y |
| fluxsch | grounding-line flux | m2/y |
| fract | basal non-frozen fraction | 0-1 |
| geoflux | geothermal heat flux | J/m2/a |
| h | ice thickness | m |
| hb | bed elevation | m |
| hbsd | standard deviation bed elevation | m |
| hs | surface elevation | m |
| logcrhmel | basal sliding coefficient, intrinsic | m/y/Pa^2 |
| maskwater | 0=gd.ice/land, 1=fl.ice/ocean | 0/1 |
| oceanmelt | sub-ice oceanic melt | m/y |
| oceanmeltav | average sub-ice ocean melt | m/y |
| pdds | Positive Degree Days | days |
| tb | basal temperature | C |
| tbhomol | basal homologous temperature | C |
| tempocn | ocean temperature | C |
| topbedeq | equilibrium bedrock elevation | m |
| tota | ice area | m2 |
| totaf | floating ice area | m2 |
| totag | grounded ice area | m2 |
| toti | ice volume | m3 |
| totif | floating ice volume | m3 |
| totig | grounded ice volume | m3 |
| ts | surface temperature | C |
| vershis | history file version number | none |
| wab | basal ice z-velocity | m/y |
| was | surface ice z-velocity | m/y |