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    up to 1 semester
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Resource Description

Instruction file

Evaporation – Micro-Lysimeter(Resource ID: 207)

This building block illustrates the effect of microclimate factors on potential and real evaporation (with plants).

The amount of water that can evaporate depends greatly upon the localized microclimatic conditions. By simply weighing objects, the effect of microclimatic factors on potential and real (with plants) evaporation can be illustrated.

Plastic containers filled with water or plants are placed in various microclimates. By weighing them over time (hours or days) the evaporation and/or evapotranspiration (for plants) can be calculated from the loss in weight. The results are discussed, comparing the relative differences between the microclimates’ characteristics.

Measuring the weight changes (using a simple kitchen scale) should be conducted over the course of multiple hours (ideally over the course of one day). Potted plants can be observed over a longer time frame.

Aha effect

The significance of water and micro-climate conditions from one location to the next is made clear.

Contact details for borrowing physical devices
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Learning Outcomes
Understanding the effect of various microclimate conditions on evaporation as part of the water and energy cycles.
Relevance for Sustainability
Microclimates are a significant determining factor for life. Regardless of location, water acts as an energetic moderator and is therefore of essential significance for sustainability considerations.
Related Teaching Resources
No specific previous knowledge / related resources required
Preparation Efforts
Low
Access
Free
Sources and Links

Häckel, H., 2012: Meteorologie. 7. Auflage, UTB.

Oke, T.R.: 2001: Boundary Layer Climates. 2ed, Cambridg Univ. Pr.

Funded by
Funded by the Austrian Federal Ministry of Science and Research within the framework of the call "Projekt MINT-Massenfächer" (2011/12)

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Author

Erich Mursch-Radlgruber

Contact

Erich Mursch-Radlgruber
erich.mursch-radlgruber(at)boku.ac.at
This teaching resource is allocated to following University:
BOKU - University of Natural Resources and Life Sciences Vienna
Institution:
Institute of Meteorology (BOKU Vienna)
Date:

License

Creative Commons
BY-NC-ND

Teaching Tools & Methods

  • Mini-project
  • Reflection
  • formteaching_experiment