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In this lesson, students will download and analyze two sets of aerosol data: one from 2003 found on the MY NASA DATA Live Access Server (LAS), and one from 2006 taken from the NASA Earth Observations (NEO) site. Analysis of wind plots enable students to determine the months of greatest aerosol activity, their path of dispersion, and their original source on the landscape. Step-by-step instructions for use of the MY NASA DATA LAS guide students through selecting a data set, importing the data into a spreadsheet, creating graphs, and analyzing data plots. The lesson provides detailed procedures, related links and sample graphs, follow-up questions, extensions, and teacher notes. Designed for student use, MY NASA DATA LAS samples micro datasets from large scientific data archives, and provides structured investigations engaging students in exploration of real data to answer real world questions.