Large-Eddy Simulation #225: (Upwind)


LES RUN #225: Upwind simulation. Shear driven. 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. 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 #225.

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 simulated lidar backscatter on a horizontal plane 7.5 m above the surface.




The following animation shows simulated lidar backscatter on an east-west vertical slice.




UW Lidar // Dec 10, 2000 // root@lidar.ssec.wisc.edu

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