Description Usage Arguments Details Value References

This model parameterizes bulk snow density with day-of-the-year as the only input. It was calibrated for the region of South Tyrol, Italy, and is therefore called ST model in the original reference.

1 |

`data` |
A data.frame of daily observations with two columns named |

`rho_0` |
Intercept of the linear regression between observed snow depths and SWE values. |

`K` |
Slope of the linear regression between observed densities and the day-of-year as defined in the original reference. |

`swe.pi16`

This function uses only the day-of-year (DOY) as parameterization for bulk snow density and hence SWE. Here, the datums in the input data.frame are converted to DOY as defined in the original reference: negative values between 1.10. and 31.12. DOY=-92 at 1.10. In leap years 31.12. has DOY = 0, in non-leap years 31.12. has DOY = -1 with no day being 0. Non computable values are returned as NA.

A vector with daily SWE values in mm.

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.

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