## Activity 2: Continuation

In this Activity, we will continue working with the experiment design you created in Activity 2. Remember that you should attempt this activity only after you have read and studied this week's Tutorial.

So, in our previous week, you worked with Activity 2, which was related to creating an experiment design using nesting. You then created a directory called "NEST" and prepared an experiment using a parent domain and two children (i.e.: two nests).

Now, let's go back to that experiment and process our LBC data to be used for that setup. For that, you will need to enter the following directory:

$cd$ cd WRF

$cd NEST$ cd WPS

Then go ahead and edit your namelist.wps so that the start and end dates correspond to the 3 domains you have and for the dates you have available in your LBC. Let's work with a simulation from 25 April 2008 at 00 UTC to 27 April at 18 UTC. Your start and end dates should look like this:

start_date = '2008-04-25_00:00:00','2008-04-25_00:00:00','2008-04-25_00:00:00',
end_date = '2008-04-27_18:00:00','2008-04-27_18:00:00','2008-04-27_18:00:00',

Note that there are three columns here - each corresponding to one domain!

After that, you will need to run:

1. ungrib.exe - remember to link the data files and copy the Vtable
2. metgrid.exe

In addition to that, remember to clean up unnecessary files after you run metgrid.exe. The instructions for that are given in the Conclusion section of this week's Tutorial.

If you have any questions or difficulties along the way, feel free to post them on our Facebook group discussion.