Introduction to lake ecosystem modeling with WET from Tobias Kuhlmann Andersen on Vimeo.
Workshop by Tobias K Andersen
In this workshop, participants will learn how to apply the process-based lake ecosystem model, Water Ecosystems Tool (WET), on a given lake. The workshop begins with a 20 minute lecture on the theoretical framework of WET followed by a hands-on tutorial on setting up a WET lake model with the user interface QWET. We will also explore calibration and validation of our lake model. At the end of the workshop, we will open up for a discussion of the applicability of WET, future model developments and the use of auto-calibration and sensitivity analysis with WET. A recording of the entire workshop can be found here:
Software and materials
To participate in the hands-on part of the workshop, you will need to have a working version of QGIS and the graphical user interface QWET. You need a Windows OS to install QWET. If you are a Mac user, we highly recommend you to apply a windows-partition on your system, as the QWET installer is only available in windows format.
QGIS
We recommend using QGIS3 64 bit version (available here: www.qgis.org).
QWET
QWET is an open source QGIS plugin for application and user adaptation of the Water Ecosystems Tool (WET). The QWET installer and the QWET source code is available through Gitlab: https://gitlab.com/WET. To download the installer or the source code, you first need to set up a (free) Gitlab account. Please read the download instructions and watch the associated video tutorial on how to download the software.
PyNCView
To visualize model output with contour plots, we recommend using the software PyNCView. You can download an installer (for Windows) at the bottom of this page (pyncview-0.99.8.msi): https://github.com/BoldingBruggeman/pyncview/releases.
Test case materials
All materials needed to follow the hands-on part of this workshop is available as a compressed zip file here: download.
Download calibrated parameter files here
In this folder you will find two different sets of configuration and parameter files for GOTM and WET. The parameter sets have been calibrated based on water temperature and dissolved oxygen or all available observations (temperature, oxygen, nutrients and chlorophyll a).
Download the default model set-up for Lake Ravn here
If you did not have the opportunity to install QWET, here is a complete default model set-up for Lake Ravn with the model executables. This will allow you to run the model without using the QWET interface.
If you have problems installing the required software or downloading the case study, you are welcome to contact me at tka@bios.au.dk