Many thank-yous to all who came out to enjoy our feature speaker, Dr. Matthew Hansen with University of Maryland Department of Geographical Sciences.  Thank-you to Tony Noerpel for his opening presentation, our vendors, Harris Teeter for providing the food and to our sponsors, REHAU, Corcoran Vineyards, George Washington University, CCAN, Your Business Our World, Solar Solutions for All and 350 Loudoun.

Dr. Hansen is with the University of Maryland Department of Geographical Sciences.  Their work in mapping of forest and deforestation is for public use and can be found on   

In his talk, Advancing Global Land Mapping and Monitoring, he highlighted how they work with the satellite images downloaded from NASA's Landsat and other satellites. One of the major obstacles to overcome in analyzing the data, to get to the activity on forests, was to eliminate the pixels representing the atmosphere.   They also use Brazil as their standard for deforestation mapping. 

Once they finish the essential analysis, they have to question what the data is showing them.  For instance, they had to figure out what the data was showing them in the Congo, where they'd see little dots of deforestation as outliers to the forests.  That's where people were getting away from rebels and were farming new land to sustain themselves.

Dr. Hansen's presentation from Friday night is in our downloads section under SL Fall Summit Presentations.