A sensor for measuring ozone will be included on the National Polar-Orbiting Environmental Satellite System (NPOESS) Preparatory Project (NPP) satellite, NASA and NOAA announced on 11 April. The Ozone Mapping and Profiler Suite (OMPS) Limb will measure the vertical distribution of ozone in the atmosphere. A U.S. National Academies committee recommended the restoration of the OMPS Limb to the NPOESS program earlier this year in its Earth science decadal survey (see Eos 88(13), 2007). Restoration of the OMPS Limb to the NPOESS program is contingent upon the cost of the instrument. The NPP satellite is scheduled to launch in 2009, and the first NPOESS satellite is scheduled for 2013.