Graphics: NCL – Example

wrf_moving_nest_precip_2doms.ncl: An example script to plot precipitation tendencies of moving nest domains over similar tendencies from the mother domain.

In this script note:

 - This script uses multi input files when reading in model data
-  It also ensures that the plot map background stays the same
 
- In addition to this, the script finds the overlapping area between two time periods for the moving nest domain, and calculates rainfall tendencies in this area (remember rainfall in the model is an accumulative field, so the difference in this field between two times will represent the rainfall tendencies during that time). These tendencies are then plotted over the similar tendencies from the mother domain.
 *NOTE: if your output frequency is low, then the nest will move far between two time periods, and the overlapping area will be small, and possibly meaningless.

In the plots below the top plot shows the 3 hourly tendencies from the mother domain only.
The bottom plot shows that the same tendencies from the moving nest has been overlaid over the data from the mother domain (in this plot the location of the nest has also been included).

See a movie showing, side-by-side, the tendencies of the mother domain (left) and a combination of the mother and nests' domains (right).