swe2hs 0.0.3

Conceptual snow density model for transferring snow water equivalent to snow depth.

This project is work in progress.

swe2hs

A simple conceptual snow density model for transferring snow water equivalent to snow depth, some people informally call it JoPack.

The density model calculates snow depth (HS) on a daily resolution and is driven by daily water equivalent of the snow cover (SWE). The model creates a new layer with a constant new snow density for every increase in SWE and a snowpack of individual layers builds up. The density of a layer increases towards a theoretical maximum density depending on an interaction of overburden acting on the layer and the current density of the layer. The maximum density is starting with an initial value at creation time of the layer and is subsequently gravitating towards a higher end value based on the overburden a layer has experienced and the occurrence of negative global SWE changes. When SWE decreases, the model entirely or partly removes layers from top of the snowpack until the loss in SWE is compensated.

Installation and development

Clone the repository:

$ git clone https://gitlabext.wsl.ch/aschauer/swe2hs.git

A new directory swe2hs will be created. After navigating to this directory, you can use:

$ pip install .

If you want to make changes to the package, install it in editable mode with:

$ pip install -e .

Testing is done with tox. Assuming you are in the root directory, run the tests with:

$ tox

You can also run individual tests from a single module with:

$ tox tests/test_module.py