swe.jo09 | R Documentation |
Snow Water Equivalent (SWE) is modeled statistically depending on snow depth, altitude, date and region in Switzerland.
swe.jo09(data, alt, region.jo09)
data |
A data.frame of daily observations with two columns named date and hs
referring to day and snow depth at that day. The date column must be either of class 'character', 'Date' or 'POSIXct'
with the format |
alt |
Station elevation in meters. |
region.jo09 |
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. |
swe.jo09
This model parameterizes bulk snow density using snow depth,
season (i.e. month), site altitude and site location. The location is implemented by a
density offset according to the region in Switzerland, where the station belongs to.
Non computable values are returned as NA.
A numeric vector with SWE values for each region in mm.
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.
data(hsdata)
swe <- swe.jo09(hsdata, 1500, 1)
summary(swe)
plot(swe)
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