readme file for nodal designation for each NOAA station in testbed

The program 'tidalstation_find.c' was used to determine the closest wet node to each tidal station
in the testbed.  The distance from the station to the nearest wet node was calculated and recorded.

It is intended that a harmonic constituent validation of each model will be conducted on the modeled
harmonics at the nearest wet node instead of an interpolated value of the nodes surrounding the station.
The reason for this strategy is that in many cases a node neighboring a station location may be permanently
dry and thus produce no tidal constituents, this will skew the data and make for poor results.  Another
motivation is that the coarseness of the mesh can cause a station to be located in an entirely dry element,
thus no harmonic data will be available for any comparison.

After the nearest node was determined some post-processing was conducted.  Using SMS each station location
was compared with the corresponding nearest wet node to determine if the chosen node was a good representation
of the station.  In some cases the nearest wet node was closer to land then the station, in other cases the 
nearest wet node was entirely land-locked.  In these cases a seperate wet node was chosen by hand, choosing the
nearest wet node that was also reasonably positioned.  In this case the station was flagged with either a '1111'
or a '9999'.

Flags:

1111:	The nearest wet node was chosen in a direction closer to land, the nearest wet node in a seaward direction
	was chosen.

9999:   The station is entirely landlocked by the mesh or the nearest wet node is not a good representation of the
	station location.  In these cases the geography of the area was taken into consideration and a suitable wet
	node was found.  An example of this case would be a station located inside a tidal inlet that, due to the
	coarsness of the mesh, has no outlet to the sea.  The geographic tidal inlet would be followed until a wet
	node could be found that was connected to the sea and thus would feel the effect of tidal shift.

In order to use the program 'tidalstation_find.c' the mesh must be available and a fort.53 file from ADCIRC must be
available.  The mesh is used to find the nearest wet nodes, the fort.53 file is used to find the harmonics at the 
corresponding wet nodes.  If the code is to be used to simply identify the nearest wet node then any fort.53 file
can be used and the fort.53 file output can simply be ignored.  The output stations_nodelist.txt will have the station
name, corresponding node number and distance (in meters) from the station to the node.