Presented by Dr. Robert Adler of NASA's Goddard Space Flight Center at the 80 th American Meteorological Society Annual Meeting in Long Beach, California, the data result from combining information from a number of polar orbiting satellites, geosynchronous satellites and rain gauges to give the best analysis of global precipitation on a monthly time scale over a 20-year period. This report compares measurements of carbon parameters at 30 locations that were sampled by more than one survey, to ensure that the surveys conducted during the 1990s produce a consistent global data set. The melting and freezing of polar ice is one of the best barometers of the global climate. Because the ice that blankets Greenland sits at a lower latitude than other polar ice caps, scientists expect it to show the effects of global climate change first. NASA's Earth Observatory presents an article about how two researchers are using satellite data to look for effects of global warming.
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Search results include a brief abstract, URL, and references to documents in HTML or PDF formats. The site also offers a Guide to EPA Publication Numbers and more information about EPA publications in general. Data include aerosol optical thickness as a function of 7 wavelengths, precipitable water derived from measurements in the 940 nm band, almucantar sky radiance and solar principle plane sky radiance at 4 wavelengths, and column volume size distribution. The data are preliminary and have not been filtered for the presence of clouds.