SNOWPACK  SNOWPACK-3.6.0
SNOOLD single profile

General structure

The snow/soil layers file has the structure described below:

  • a header section containing the metadata for the location;
  • a data section containing description of the layers (if any). Please note that the layers are given from the bottom to the top.
  • a hazard data section.

The following points are important to remember:

  • the ProfileDate will be used as starting date for the simulation. Therefore, make sure you have meteorological data from this point on!
  • the number of soil and snow layers must be right!

Fields definition

initial snow profile fields description
FieldDescription
YYYYYear
MMMonth
DDDay
HHHour
MIMinutes
Layer_Thicklayer thickness [m]
Tlayer temperature [K]
Vol_Frac_Ifractional ice volume [0-1]
Vol_Frac_Wfractional water volume [0-1]
Vol_Frac_WPfractional preferential flow water volume [0-1]
Vol_Frac_Vfractional voids volume [0-1]
Vol_Frac_Sfractional soil volume [0-1]

FieldDescription
Rho_Ssoil density [kg/m3]
Conduc_Smineral phase soil thermal conductivity [w/(mK)]
HeatCapac_Smineral phase soil thermal capacity [J/(kg*K)]
rggrain radius [mm]
rbbond radius [mm]
dddendricity [0-1]
spspericity [0-1]
mkmarker, see Metamorphism.cc
mass_hoarmass of surface hoar []
nenumber of elements
CDotstress change rate (initialize with 0.)
metamocurrently unused

Example

Usually, simulations are started at a point in time when no snow is on the ground, therefore not requiring the definition of snow layers. An example is given below with two soil layers:

[SNOWPACK_INITIALIZATION]
StationName=Davos:Baerentaelli
ProfileDate=1999 10 01 00 00
HS_Last=0.0
Latitude=46.701
Longitude=9.82
Altitude=2560
SlopeAngle=0
SlopeAzi=0
nSoilLayerData=2
nSnowLayerData=0
SoilAlbedo=0.5
BareSoil_z0=0.02
CanopyHeight=0.
CanopyLeafAreaIndex=0.
CanopyDirectThroughfall=0
WindScalingFactor=1.00
ErosionLevel=0
TimeCountDeltaHS=0.00
YYYY MM DD HH MI Layer_Thick T Vol_Frac_I Vol_Frac_W Vol_Frac_V Vol_Frac_S Rho_S Conduc_S HeatCapac_S rg rb dd sp mk mass_hoar ne CDot metamo
1980 10 01 00 00 10 278.15 0.00 0.02 0.01 0.97 2400.0 0.3 900.0 10000 0.0 0.0 0.0 0 0.0 50 0.0 0.0
1980 10 01 00 00 0.5 278.15 0.00 0.02 0.01 0.97 2400.0 0.3 900.0 10000 0.0 0.0 0.0 0 0.0 20 0.0 0.0
SurfaceHoarIndex
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
DriftIndex
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
ThreeHourNewSnow
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
TwentyFourHourNewSnow
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
End