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Article: The Ultraviolet Radiation Environment of High Southern Latitudes: Springtime Behavior over a Decadal Timescale¶
- Article from:
- Photochemistry and Photobiology
- Article date:
- March 1, 2005
- Author:
CopyrightCopyright American Society of Photobiology Mar/Apr 2005. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
Four spectroradiometers located at latitudes from 55° to 90°S conducted near-continuous measurements of ground-level solar ultraviolet irradiance from 1990 through 2001. The behavior during months from October through December is of special interest because this period includes the springtime loss in column ozone and the naturally large irradiances of early summer. Monthly integrated irradiances using biological weightings for erythema and damage to DNA show a distortion of the normal annual cycle in irradiance, with enhanced values occurring in October and November. In some cases, these irradiances exceed those near summer solstice in December. Changes in local cloudiness and ...