Amundsen Sea future MAR simulations forced by the CMIP5 multi-model mean

Amundsen Sea future MAR simulation forced by the CMIP5 multi-model mean (RCP8.5)

This future simulation is fully described in the following article:

Donat-Magnin, M., Jourdain, N. C., Kittel, C., Agosta, C., Amory, C., Gallée, H., Krinner, G., and Chekki, M. Future surface mass balance and surface melt in the Amundsen sector of the West Antarctic Ice Sheet. The Cryosphere.

The future is derived from the CMIP5 multi-model mean under the RCP8.5 scenario and covers the 2079-2108 period. The corresponding present-day simulation is available on http://doi.org/10.5281/zenodo.4308510 and was thoroughly evaluated in the following TC paper: https://doi.org/10.5194/tc-14-229-2020

See netcdf metadata for more information. Note that what is called runoff in the outputs is not actually a runoff (into the ocean) but more the net production of liquid water at the surface (which can either form ponds or flow into the ocean).

Monthly files provided on MAR grid (see MAR_grid10km.nc). We also provide climatological (2079-2108 average) surface mass balance (SMB), surface melt rates and net liquid water production ("runoff") on a standard 8km WGS84 stereographic grid (see files ending as mean_polar_stereo.nc). Daily snowfall and surface melt rates are provided in ICE*nc.

The interpolation to the stereographic grid is done using interpolate_to_std_polar_stereographic.f90. The fields are extrapolated to the ocean grid points so that ice sheet models with various ice-shelf extent can use this dataset.

To extrapolate the SMB and surface melt projections to other warming scenarios or period, see eq. (2,3) in Donat-Magnin et al.

The following variables are provided:

• CC Cloud Cover
• LHF Latent Heat Flux
• LWD Long  Wave Downward
• LWU Long  Wave Upward
• QQp Specific Humidity (pressure levels)
• QQz Specific Humidity (height levels)
• RH Relative Humidity
• SHF Sensible Heat Flux
• SIC Sea ice cover
• SP Surface Pressure
• ST Surface Temperature
• SWD Short Wave Downward
• SWU Short Wave Upward
• TI1 Ice/Snow Temperature (snow-layer levels)
• TTz Temperature (height levels)
• UUp x-Wind Speed component (pressure levels)
• UUz x-Wind Speed component (height levels)
• VVp y-Wind Speed component (pressure levels)
• VVz y-Wind Speed component (height levels)
• UVp Horizontal Wind Speed (pressure levels)
• UVz Horizontal Wind Speed (height levels)
• ZZp Geopotential Height (pressure levels)
• mlt Surface melt rate
• rfz Refreezing rate
• rnf Rainfall
• rof "Runoff" (i.e. net production of surface liquid water)
• sbl Sublimation
• smb Surface Mass Balance
• snf Snowfall