Modelling wind farm effects in HARMONIE–AROME (cycle 43.2.2) – Part 1: Implementation and evaluation

With increasing number and proximity of wind farms, it becomes crucial to consider wind farm effects (WFEs) in the numerical weather prediction (NWP) models used to forecast power production. Furthermore, these WFEs are also expected to affect other weather-related parameters at least locally. Thus,...

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Bibliographic Details
Published inGeoscientific Model Development Vol. 17; no. 7; pp. 2855 - 2875
Main Authors Fischereit, Jana, Vedel, Henrik, Larsén, Xiaoli Guo, Theeuwes, Natalie E, Giebel, Gregor, Kaas, Eigil
Format Journal Article
LanguageEnglish
Published Katlenburg-Lindau Copernicus GmbH 16.04.2024
Copernicus Publications
Subjects
Air-turbines
Analysis
Buildings and facilities
Case studies
Energy
Kinetic energy
Mathematical models
Meteorological research
Numerical weather forecasting
Parameterization
Simulation
Turbines
Turbulent kinetic energy
Weather
Weather forecasting
Wind effects
Wind farms
Wind power
Wind speed
Wind turbines
Europe
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Summary:With increasing number and proximity of wind farms, it becomes crucial to consider wind farm effects (WFEs) in the numerical weather prediction (NWP) models used to forecast power production. Furthermore, these WFEs are also expected to affect other weather-related parameters at least locally. Thus, we implement the explicit wake parameterization (EWP) in the NWP model HARMONIE–AROME (hereafter HARMONIE) along-side the existing wind farm parameterization (WFP) by Fitch et al. (2012) (FITCH). We evaluate and compare the two WFPs against research flight measurements as well as against similar simulations performed with the Weather Research and Forecasting (WRF) model using case studies. The case studies include a case for WFEs above a wind farm as well as two cases for WFEs at hub height in the wake of farms. The results show that EWP and FITCH have been correctly implemented in HARMONIE. For the simulated cases, EWP underestimates the WFEs on wind speed and strongly underestimates the effect on turbulent kinetic energy (TKE). FITCH agrees better with the observations, and WFEs on TKE are particularly well captured by HARMONIE–FITCH. After this successful evaluation, simulations with all wind turbines in Europe will be performed with HARMONIE and presented in the second part of this paper series.
ISSN:1991-9603
1991-959X
1991-962X
1991-9603
1991-962X
DOI:10.5194/gmd-17-2855-2024