Abstract
Abstract. Between 6 September 2016 and 15 October 2017, meteorological measurement flights were conducted above the German Bight in the framework of the project WIPAFF (Wind Park Far Field). The scope of the measurements was to study long-range wakes with an extent larger than 10 km behind entire wind parks, and to investigate the interaction of wind parks and the marine atmospheric boundary layer. The research aircraft Dornier 128 of the Technische Universität (TU) Braunschweig performed in total 41 measurement flights during different seasons and different stability conditions. The instrumentation consisted of a nose boom with sensors for measuring the wind vector, temperature and humidity, and additionally sensors for characterizing the water surface, a surface temperature sensor, a laser scanner and two cameras in the visible and infrared wavelength range. A detailed overview of the aircraft, sensors, data post-processing and flight patterns is provided here. Further, averaged profiles of atmospheric parameters illustrate the range of conditions. The potential use of the data set has been shown already by first publications. The data are publicly available in the world data centre PANGAEA (https://doi.org/10.1594/PANGAEA.902845; Bärfuss et al., 2019a).
Highlights
The growing demand for renewable energy has led to largescale installations of wind parks in the German Bight in the last decades
There is an online graphical display with time series and vertical profiles of all important measured and calculated meteorological parameters, enabling the onboard scientist to modify the ongoing mission based on the measured parameters if necessary
Temperature measurements are performed by two complementary sensors, the slow but highly accurate 102DB1AG temperature sensor (Rosemount, USA) with an accuracy of ±0.1 K and the 102E4AL sensor (Rosemount, USA) with a fast response time and an accuracy of ±0.25 K plus 0.5 % of the temperature to be measured in degrees Celsius
Summary
The growing demand for renewable energy has led to largescale installations of wind parks in the German Bight in the last decades. Numerical simulations suggested the existence of far-reaching wake areas with reduced wind speed and enhanced turbulence (Fitch et al, 2012) To verify these indirect estimates and quantify the effects of wind parks on the marine atmospheric boundary layer, flight measurements were performed.
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