Large-Eddy Simulation #251: (Upwind)


LES RUN #251: Shear-driven upwind simulation with albedo=0.78 in order to have no temperature change at the surface with time. 200 x 120 x 69 with 15-m resolution in all 3 directions. Periodic lateral boundary conditions. Entire domain over snow-covered land. Arakawa & Lamb advection routine, VDKR=HDKR=0.05. Horizontally homogeneous initial condition according to observations from ISS2 on 13 Jan 98 at 16:30 Z. The initial temperature and dew-point profile was from the radiosonde and the initial wind speed and direction profiles were from linear fits to the data as shown in the first frame of the animation (the thumbnail is the last frame of the animation.) Click here to see the NMSTASK file of LES #234.

The following animation shows the evolution of mean profiles (red lines) of wind speed, direction, temperature and dewpoint as well as vertical velocity on a east-west oriented vertical slice.




The following animation shows vertical velocity on 4 horizontal slices: 7.5, 97.5, 202.5 and 397.5 m above the surface.




The following animation shows simulated lidar aerosol backscatter at 7.5 m above the surface.




The following animation shows simulated lidar aerosol backscatter on an east-west vertical slice through the model domain.




UW Lidar // Dec 29, 2000 // root@lidar.ssec.wisc.edu

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