runNMRSnow: Wrapper function for running NicheMapR snow model

In ilyamaclean/microsnow: Below or above canopy microclimate modelling with R in snowy environments

Wrapper function for running NicheMapR snow model

Description

The function runNMRSnow runs the multi-layer snow model in NicheMapR (Kearney and POrter 2017, Ecography 40: 664-674) and can be used to derive hourly snow depths and temperatures for fitting the simpler model emulator in microsnow. Requires NicheMapR to be installed (https://github.com/mrke/NicheMapR)

Usage

runNMRSnow(
  weather,
  precd,
  lat,
  long,
  snowenv = "Taiga",
  zm = 0.002,
  snowem = 0.99,
  ALTT = 0
)

Arguments

weather	a data.frame of weather variables (see details).
precd	a vector of daily precipitation (mm).
lat	latitude of location for which snow depth and temperature are required (decimal degrees)
long	longitude of location for which snow depth and temperature are required (decimal degrees)
snowenv	one of Alpine, Maritime, Prairie, Taiga or Tundra (see details)
zm	optionally, numeric value of roughness length for momentum transfer of snow surface (m)
snowem	optionally, snow emissivity (~0.99) speed used in conductivity calculations (m/s)
ALTT	elevation of location (m)

Details

The format and and units of weather must follow that in the example dataset climdata. The paramater snowenv is used to compute snow density following Sturm et al (2010) J Hydrometeorology 11: 1380-1393.

Value

a list of the following:

SNOWDEP vector of predicted snow depth (cm)

SNOWTEMP vector of predicted snow surface temperature (deg C)

ilyamaclean/microsnow documentation built on April 7, 2023, 8:55 a.m.