DFG - Boysen GRK F3

The Effect of Wind Farms on the Agroecosystem due to Altered Turbulent Mixing in the Atmospheric Surface Layer 

Motivation

Given the rising global energy demand and the urgency to combat climate change, sustainable and renewable energy sources have garnered widespread attention. The propagation of renewable energy technologies worldwide has notably altered local land use and microclimate conditions. Therefore, this study focuses on examining how the turbulence generated by wind turbines influences nearby climatic factors such as air temperature, evapotranspiration, and soil moisture content. By investigating these dynamics, we aim to contribute to a better understanding of the impact of wind energy infrastructure on its immediate surroundings, facilitating informed decision-making for sustainable energy development.

Objectives

This research project at the Chair of Meteorology aims to support the transition to green energy and mitigate climate change by investigating the microclimate effects of wind turbines using the PALM Large Eddy Simulation (LES) model. We analyse the turbulent interactions and resultant microclimatic changes induced by wind turbine operations by employing high-resolution simulations. Preliminary findings indicate that wind turbines cause slight cooling during the day and warming at night, consistent with previous research. Additionally, the turbulence generated by wind turbines influences soil moisture levels and evapotranspiration rates, with pronounced effects under specific atmospheric conditions. Following the simulation results from the PALM, the MONICA agroecosystem model will be used to assess the impact of these microclimatic changes on agricultural ecosystems. This analysis will focus on how altered soil moisture and temperature patterns affect crop yield and evaluate the potential to reduce the risk of late frost damage on early-stage crops. By elucidating these dynamics, we seek to provide valuable insights for optimising wind energy infrastructure and promoting sustainable energy practices in the face of climate change challenges.