Hurricane and Severe Storm Sentinel
Close to 100 million Americans now live within 50 miles of a coastline, thus exposing them to the potential destruction caused by a landfalling hurricane. While hurricane track prediction has improved in recent decades, improvements in hurricane intensity prediction have lagged, primarily as a result of a poor understanding of the processes involved in storm intensity change. The Hurricane and Severe Storm Sentinel (HS3) is a five-year mission targeted to enhance our understanding of the processes that underlie hurricane intensity change in the Atlantic Ocean basin. HS3 will determine the extent to which either the environment or processes internal to the storm are key to intensity change.
Summary provided by http://science.nasa.gov/missions/hs3/