SNACS Polar MM5 atmospheric model output Data updated Dec 21, 2007 - MEH Contact John Cassano (cassano@cires.colorado.edu) for any questions regarding the data provided on this web page. Time series data Time series data from 28 model grid points near Barrow, AK are provided in this directory. All model simulations go from 1 September through 30 September of following year. Forcing data: Model years Data 1957-1958 to 1978-1979 ERA40 1979-1980 to 2000-2001 ERA40 + SSMR/SSMI sea ice from NSIDC 2001-2002 to 2006-2007* TOGA + SSMR/SSMI sea ice from NSIDC V2 + NNRP for soil moisture * Note: the 2006-2007 model year ends on Dec. 31, 2006. As of Dec 21 2007, the SSRM/SSMI NSIDC V2 sea ice data set has only been extended to Dec 31, 2006. The model grid point closest to Barrow, AK is barrow27. Location of time series points: location name, latitude (deg), longitude (deg), grid point elevation (m), land use type barrow11, 68.03, -156.35, 909.16, 21 (wooded tundra) barrow12, 68.49, -156.56, 604.35, 21 (wooded tundra) barrow13, 68.95, -156.78, 350.88, 21 (wooded tundra) barrow14, 69.41, -157.00, 196.95, 21 (wooded tundra) barrow15, 69.87, -157.24, 82.80, 21 (wooded tundra) barrow16, 70.33, -157.48, 23.09, 22 (mixed tundra) barrow17, 70.79, -157.74, 9.13, 22 (mixed tundra) barrow18, 71.25, -158.01, 0.00, 16 (water) barrow19, 71.71, -158.30, 0.00, 16 (water) barrow21, 68.10, -155.12, 1178.58, 21 (wooded tundra) barrow22, 68.56, -155.30, 709.58, 21 (wooded tundra) barrow23, 69.02, -155.49, 277.94, 21 (wooded tundra) barrow24, 69.48, -155.69, 105.80, 21 (wooded tundra) barrow25, 69.94, -155.90, 50.86, 21 (wooded tundra) barrow26, 70.41, -156.11, 21.58, 22 (mixed tundra) barrow27, 70.87, -156.34, 6.61, 22 (mixed tundra) barrow28, 71.33, -156.58, 0.00, 16 (water) barrow29, 71.79, -156.83, 0.00, 16 (water) barrow31, 68.16, -153.89, 1138.15, 21 (wooded tundra) barrow32, 68.62, -154.04, 744.20, 21 (wooded tundra) barrow33, 69.09, -154.20, 284.47, 21 (wooded tundra) barrow34, 69.55, -154.37, 85.39, 21 (wooded tundra) barrow35, 70.01, -154.54, 35.85, 21 (wooded tundra) barrow36, 70.48, -154.73, 12.42, 22 (mixed tundra) barrow37, 70.94, -154.92, 0.00, 16 (water) barrow38, 71.40, -155.12, 0.00, 16 (water) barrow39, 71.87, -155.34, 0.00, 16 (water) Data contained in time series files: date (yyyy-mm-dd in *_avg.txt file and yyyy-mm-dd_hh in *_3h.txt file) (UTC) psfc - surface pressure (mb) slp - sea level pressure (mb) tg - ground temperature (K) t2m - 2m air temperature (K) q2m - 2m water vapor mixing ratio (kg/kg) ws10 - 10m wind speed (m/s) wd - 10m wind direction (deg) ust - friction velocity, u* (m/s) lhf - latent heat flux (W/m^2) shf - sensible heat flux (W/m^2) grnf - ground heat flux (W/m^2) swd - downwelling shortwave radiation at surface (W/m^2) swu - upwelling shortwave radiation at surface (W/m^2) alb - albedo (fraction) lwd - downwelling longwave radiaton at surface (W/m^2) lwu - upwelling longwave radation at surface (W/m^2) p3h - accumulated precipiation (24h in *_avg.txt file and 3h in *_3h.txt file) (cm) swe - snow water equivalent (mm) cld_frac - cloud fraction (fraction)