RIS

T1 - Comparison of Large Eddy Simulations of a convective boundary layer with wind LIDAR measurements

A1 - Pedersen,Jesper Grønnegaard

A1 - Kelly,Mark C.

A1 - Gryning,Sven-Erik

A1 - Floors,Rogier

A1 - Batchvarova,Ekaterina

A1 - Pena Diaz,Alfredo

AU - Pedersen,Jesper Grønnegaard

AU - Kelly,Mark C.

AU - Gryning,Sven-Erik

AU - Floors,Rogier

AU - Batchvarova,Ekaterina

AU - Pena Diaz,Alfredo

PB - Copernicus GmbH

PY - 2012

Y1 - 2012

N2 - Vertical profiles of the horizontal wind speed and of the standard deviation of vertical wind speed from Large Eddy Simulations of a convective atmospheric boundary layer are compared to wind LIDAR measurements up to 1400 m. Fair agreement regarding both types of profiles is observed only when the simulated flow is driven by a both time- and height-dependent geostrophic wind and a time-dependent surface heat flux. This underlines the importance of mesoscale effects when the flow above the atmospheric surface layer is simulated with a computational fluid dynamics model.

AB - Vertical profiles of the horizontal wind speed and of the standard deviation of vertical wind speed from Large Eddy Simulations of a convective atmospheric boundary layer are compared to wind LIDAR measurements up to 1400 m. Fair agreement regarding both types of profiles is observed only when the simulated flow is driven by a both time- and height-dependent geostrophic wind and a time-dependent surface heat flux. This underlines the importance of mesoscale effects when the flow above the atmospheric surface layer is simulated with a computational fluid dynamics model.