 Problem #1 
The concentration utility tutorial showed the concentration time series at Little Valley, NY (S510) for a relatively coarse concentration grid of 0.25 degrees. Would the results be similar if a finer grid resolution was used  perhaps 0.05 degrees?
 Hint  Retrieve captex_control.txt and captex_setup.txt and reconfigure. Remember to change the output file names so the previous simulation can be used for comparison.
 Solution  How does the fine grid time series compare with the coarse grid calculation? How do the coarse grid statistical results compare with the new fine grid simulation?
 Problem #2 
Continuing with problem #1, recompute the finegrid concentrations using the 9 km WRF meteorological data.
 Hint  Follow the alternate approach by editing and running batch files: conc_cexp.bat, conc_util.bat, and conc_stat.bat
 Solution  In this example, the finer grid concentration and meteorology calculation shows a much better fit with the measurements at Little Valley. There is also an improvement in the statistical results compared with either of the previous calculations.
