%0 book part %@ %A Schulz-Stellenfleth, J., Djath, B. %D 2021 %J Handbook of Wind Energy Aerodynamics %R doi:10.1007/978-3-030-05455-7_56-1 %T SAR Observations of Offshore Windfarm Wakes %U https://doi.org/10.1007/978-3-030-05455-7_56-1 %X As one major conclusion drawn in this chapter, it is strongly recommended to use SAR data in combination with other sources of information, like in situ data or numerical model simulations. Different options and challenges associated with data merging of this kind are discussed.