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UV - CANYONLANDS NATIONAL PARK UT
Citation:
Description:
Brewer 133 is located in Canyonlands NP, measuring ultraviolet solar radiation. Irradiance and column ozone are derived from this data. Ultraviolet solar radiation is measured with a Brewer Mark IV, single-monochrometer, spectrophotometer manufactured by SCI-TEC Instruments, Inc. of Saskatoon, SK, Canada. The UV monitoring under EPA's UV-Net program is coordinated with measurement programs of other U.S. Federal agencies through the U.S. Global Change Research Program. Brewer 133 is located on a metal scaffold tower about 4.5 meters high and having a platform about 2 by 4 meters. The site is near the northern Park entrance and located on a ridge which allows the instrument a 360 degree view of the horizon. A small building is located about 20 meters SSW of the Brewer and houses the control computer. A 10-meter tower is mounted on the top of the building and is the only possible obstruction that may interfere with the Brewer's field of view. The surrounding countryside is very rocky with small scrub vegetation and short grass. The Brewer has been recording data at this site since July 1997.