swemod: SWE modeling with several statistical and a physical model...

In swemod: Snow Water Equivalent Modeling with Parametric and Statistical Models

Description

Snow Water Equivalent (SWE) is modeled either statistically depending on snow depth, altitude, date and climate class, or solely from daily snow depth changes.

Usage

swemod(data, model = c("deltasnow","jonas","pistocchi","sturm"), 
       alt, region, snowclass, verbose = FALSE)

Arguments

data	A data.frame of daily observations with two columns named date and hs referring to day and snow depth at that day. Values in the date column must be of class character with format YYYY-MM-DD. Values in the hs column must be snow depth values of class numeric ≥ 0 in m. No gaps or NA are allowed.
model	Defines model for SWE computation. Can be one, several or all of "deltasnow","jonas","pistocchi","sturm". If no model is given, all models are computed.
alt	Must be given if one of model is "jonas". Station elevation in meters
region	Must be given if one of model is "jonas". Integer number of the Swiss region where the station belongs to, according to Fig. 1 in the original reference. Must be one of 1,2,3,4,5,6,7.
snowclass	Must be given if one of model is "sturm". Must be one of the following character strings: "alpine","maritime","prairie","tundra","taiga".
verbose	Should additional information be given during runtime?

Details

swemod This function is a wrapper for the computation of SWE with different models. The process based model deltasnow can be chosen, as well as different statistical models of Jonas,Pistocchi and Sturm.

Value

A list of class "swemod" with components:

swe	Contains a list of vectors. Each entry refers to SWE values computed with the selected model(s).
date	Character vector of date strings in the format YYYY-MM-DD.
hs	Vector of snow depth values used to compute SWE.

Author(s)

Harald Schellander, Michael Winkler

References

Jonas, T., Marty, C. and Magnusson, J. (2009) "Estimating the snow water equivalent from snow depth measurements in the Swiss Alps"", Journal of Hydrology, 378(1 - 2), pp. 161 - 167. doi: 10.1016/j.jhydrol.2009.09.021.

Pistocchi, A. (2016) "Simple estimation of snow density in an Alpine region", Journal of Hydrology: Regional Studies. Elsevier B.V., 6(Supplement C), pp. 82 - 89. doi: 10.1016/j.ejrh.2016.03.004.

Sturm, M. et al. (2010) "Estimating Snow Water Equivalent Using Snow Depth Data and Climate Classes", Journal of Hydrometeorology, 11(6), pp. 1380 - 1394. doi: 10.1175/2010JHM1202.1.

Winkler, M., Schellander, H., Gruber, S. (2020) "Snow Water Equivalent from daily snow heights and their day-to-day changes". Hydrology and Earth System Sciences, under review.

swemod documentation built on Nov. 11, 2019, 3 p.m.