Visibility Degradation

Gila River - Photo Credit Josh Grant

From the haze that sometimes obscures vistas in our parks, to the smog that frequently shrouds our largest cities, the most noticeable sign of air pollution is poor visibility. UC Davis students, staff, and faculty, especially as part of the IMPROVE Program:Difference in visibility

  • monitor the airborne particles that are most responsible for reducing visibility in over 150 national parks, wilderness areas, and other remote sites across the U.S.
  • characterize the compositions and sizes of these visibility-reducing particles
  • identify the emissions sources most responsible for these visibility reduction
  • develop cost-effective policies for controlling emissions that reduce visibility