The IEEE Geoscience and Remote Sensing Society (GRSS) is pleased to sponsor the 28th International Geoscience and Remote Sensing Symposium (IGARSS) in Boston, Massachusetts, USA. IGARSS is the premier international symposium on remote sensing. Held annually in world-wide venues, this prestigious meeting has become an international focus for remote sensing theory, programs, applications and state-of-the-art technology. As a professional society, IEEE GRSS seeks to advance geoscience and remote sensing science and technology through scientific, technical and educational activities. The Society strives to promote a high level of technical excellence among its members by exchange of information through conferences, symposia, meetings, workshops, publications and through its committees to provide for the needs of its members.