flying or unique orbits that allow both the high temporal and the high spatial resolutions required for mapping changes related to dynamic processes such as deforestation. The instruments NASA has flown to Mars provide precedents for this technology. Data from this wavelength region could serve both the surface-composition and surface-change (derived emissivity) as well as the natural hazards (surface kinetic temperature) communities.
We support implementation of the stated and implied SESWG recommendations, including continuation of AVIRIS and development of a hyperspectral (less than 10-nanometer bandwidth) visible-near-infrared spaceborne instrument. Rather than simply refining existing techniques, new sensor technologies will be required to achieve the stated scientific goals. In addition to airborne and spaceborne hyperspectral capabilities, continued operation of multispectral instruments would help ensure an uninterrupted record of environmental change, although hyperspectral data could be used to derive multispectral products if budgets are tight.