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Images from 35mm and digital camera monitoring
sites with over five years of data have been selected to capture
a range or "spectrum" of historical visibility,
seasonal conditions, and other significant events. Over 70
USDA-Forest Service photographic monitoring sites are represented
in this Historical Gallery. All posted materials and images
have also been archived on site-specific CD-ROMs, available
from the USDA-FS Air Program.
Features for each historical gallery
include:
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• A written site
history and graphic representation of the monitoring
site and operational period.
• Image spectrums consisting of a series of good
to poor regional haze visibility conditions.
• Images of pristine, scenic, or meteorological
interest.
• Selected representations of layered haze, regional
haze, or pollution episodes of significant importance. |
A complete summary of the historical archive project and the
image selection process is provided under the drop-down Historical
Archive Project Overview menu.
Site-specific historical galleries can
be accessed using the drop-down Historical Gallery Search
menu or Search features above.
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