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wind_mapper

Wind_mapper is a tool used to produce pre-computed libraries of wind field used for wind downscaling. Wind_mapper uses the WindNinja wind diagnostic model. It has been primarily developped for wind downscaling for the Canadian Hydrological Model CHM.

Installation

Base

WindMapper requires a python environment with the following packages installed:

  • gdal
  • pyproj
  • numpy
  • scipy

It’s recommended these are installed in a virtual environment.

MacOS

On macos, the gdal binaries should be installed from homebrew

brew install gdal

and then the corresponding gdal-python package installed at the corresponding version. For example:

pip install gdal==2.4.2

WindNinja

WindMapper depends upon WindNinja. This can be compiled from source, or can be installed via conan.

MacOs

Currently the MacOS OpenMP build of WindNinja does not work firelab/windninja#355

Use

Ensure the paths fic_config_WN and wn_exe are correctly set in the configuration file.

WindMapper may be run in two modes:

  1. download a SRTM tile that corresponds to a lat/long bounding box defined by the user or;
  2. use a user-supplied DEM

The example given in examples/download_DEM can be run as

python wind_mapper_generic.py examples/download_DEM/param_download_DEM.py