2004 Ieee International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. Igarss 2004, Date: 20 September 2004 through 24 September 2004, Location: Anchorage, AK, Sponsors: IEEE;IEEE Geoscience and Remote Sensing Society;The Geophysical Institute of the University of Alaska Fairbanks;University of Missouri-Columbia;National Aeronautics and Space Administration, NASA