Existing comment:
Diminishing View:
On a clear day the San Francisco Peaks stand bold against the sky. How well can you see the peaks today?
Visitors to the Grand Canyon usually expect panoramic views in clear desert air. But air pollutants can drastically impair visibility at Grand Canyon National Park. Clear days allow views approaching over 150 miles. On other days pollution reduced visibility to 70 miles or less.
The use of modern emission control equipment on existing pollution sources and careful placement of new industry can help restore Grand Canyon views. We can all play a part by conserving electricity, carpooling, recycling, becoming involved in air quality issues, and supporting local and national policies that recognize the importance of clean air.
Pollution Sources:
Air pollution at Grand Canyon comes from both local and distant sources. Weather patterns dictate how the contribution of each source changes over time. In summer, pollutants often travel great distances from industrial and urban areas of southern California, southern Arizona, and northern Mexico. In winter, local sources and sources in southern Arizona are more important contributors. |