overlap observations on US map

I have a dataset of observations in (latitude, longitude, concentration)
format. How do I plot it out and overlap it onto an US map using ncl?
The strength of concentration field (which will be discrete points in
the plot) has to be reflected by a color label bar. I wanted to place
this plot next to a plot of WRF model output for comparison.

I know how to plot the model output, how to read in text file, and do
panel plots, but I can't seem to find anything similar in the webpage
examples which plot observations. Thanks in advance for your reply.

Jin

Jin-Sheng Lin
Regional Air Quality Modeler
Virginia Department of Environmental Quality
Air Division
629 East Main Street
Richmond, VA 23219
(tel) 804-698-4412
e-mail: jlin_at_deq.virginia.gov
 
 
 

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Received on Tue Aug 25 2009 - 14:05:36 MDT