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UV - ACADIA NATIONAL PARK ME
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Description:
Brewer 138 is located in Acadia 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 138 is located on Mount Desert Island and sits on top of a modular building about 3.5 meters off the ground. The building sits in a clearing which slopes downward from N to S. Terrain and a tree line obstruct the horizon about 15 degrees from the W, through the N, to NE. About 10 meters NE of the Brewer is a meteorological tower that may interfere with summertime direct sun measurements. To the E and attached directly to the building, another tower can also interfere with direct sun measurements in the morning. The view to the SE-SW is essentially unobstructed. The Brewer has been recording data at this site since February 1998.