NASA Eulerian Snow On Sea Ice Model (NESOSIM)

Data Description

Arctic sea ice snow depth and density estimates simulated with the NASA Eulerian Snow On Sea Ice Model (NESOSIM).

NESOSIM is a three-dimensional, two-layer (vertical), Eulerian snow on sea ice budget model. The data included here are from the NESOSIM v1.0 model configuration forced with daily inputs of snowfall (from ERA-I and a median of three reanalyses), near-surface winds (from ERA-I), sea ice concentration (from Bootstrap satellite passive microwave data) and sea ice drift (from the NSIDC Polar Pathfinder satellite feature tracking data).

More information can be found on the code repository https://github.com/akpetty/NESOSIM and in the paper reference included below.

Data Format

 A single NetCDF file is provided for each annual accumulation season model run (August 15th to May 1st of the following year), providing daily data on a 100 km polar stereographic projection.

Each NetCDF file includes the following variables:

 - effective snow depth (snowDepth)

 - grid-cell snow volume (snowVol)

 - bulk snow density (density)

 - reanalysis-derived daily cumulative snowfall (Precip)

 - passive microwave ice concentration data (iceConc)

 - day of the year (day).

More variables are available in the raw xarray data pickles that can be generated using the NESOSIM code provided in the GitHub code repository (or by contacting me directly).

Data Files

    NESOSIM configuration:

  • File 1 - nc, 23.66 MB: Aug 2000 - May 2001
  • File 2 - nc, 23.66 MB: Aug 2001 - May 2002
  • File 3 - nc, 23.66 MB: Aug 2002 - May 2003
  • File 4 - nc, 23.75 MB: Aug 2003 - May 2004
  • File 5 - nc, 23.66 MB: Aug 2004 - May 2005
  • File 6 - nc, 23.66 MB: Aug 2005 - May 2006
  • File 7 - nc, 23.66 MB: Aug 2006 - May 2007
  • File 8 - nc, 23.75 MB: Aug 2007 - May 2008
  • File 9 - nc, 23.66 MB: Aug 2008 - May 2009
  • File 10 - nc, 23.66 MB: Aug 2009 - May 2010
  • File 11 - nc, 23.66 MB: Aug 2010 - May 2011
  • File 12 - nc, 23.75 MB: Aug 2011 - May 2012
  • File 13 - nc, 23.66 MB: Aug 2012 - May 2013
  • File 14 - nc, 23.66 MB: Aug 2013 - May 2014
  • File 15 - nc, 23.66 MB: Aug 2014 - May 2015

References

Petty, A. A., M. Webster, L. N. Boisvert, T. Markus (2018), The NASA Eulerian Snow on Sea Ice Model (NESOSIM): Initial model development and analysis, Geosci. Model Dev., doi: 10.5194/gmd-2018-84

For questions about the data please contact: Alek Petty, alek.a.petty@nasa.gov.