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HALEAKALA NATIONAL PARK, HAWAII |
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Photographic
Archive 1987-1995 |
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SPECTRUM FREQUENCY SUMMARIES
Visual
range (km) and cumulative frequency summaries are provided for each archived
spectrum series with associated IMPROVE aerosol data. Aerosol data correlations
are not available for sites having no associated aerosol data prior to Fall
1999.
Tabular summaries
for each range of visibility grouping include:
Word of Caution:
No direct correlation should be made between original visibility
monitoring slides (or their measurements) and these provided reproduced images.
Each replication and measured slide contrast is different from the original
Kodachrome 35mm slide because of changes in film exposure, film type, digital
scanning calibrations, and viewing equipment. Slides should be grouped into
visibility categories such as excellent, good, medium, and poor. All associated
photographs were selected as a set and must remain intact.
It should be noted
that there is error, sometimes substantial error, in the process of estimating
visual range from Kodachrome slides. True error in each slide measurement is
dependent on the characteristics of the scene and target, weather conditions,
sun angle, uniformity of the air quality in the sight path, film exposure,
measurement error and other factors. The above visual range estimates and
corresponding extinction and deciview measurements have been rounded for
precision.