Germar Bernhard

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Recently Cabrol et al. (2014), hereafter C14, reported measurements of the UV Index (UVI) reaching 43.3 at a high altitude location in the Andes (Licancabur; 22.5◦ S, 67.5◦ W, 5917m a.s.l.). This value is much larger than those previously reported from other high altitude tropical locations. For example, UVI maxima reported for Mauna Loa (19.5◦ N, 155.6◦ W,(More)
The fourth North American Intercomparison of Ultraviolet Monitoring Spectroradiometers was held September 15 to 25, 1997 at Table Mountain outside of Boulder, Colorado, USA. Concern over stratospheric ozone depletion has prompted several government agencies in North America to establish networks of spectroradiometers for monitoring solar ultraviolet(More)
Comparison of OMI UV observations with ground-based measurements at high northern latitudes G. Bernhard, A. Arola, A. Dahlback, V. Fioletov, A. Heikkilä, B. Johnsen, T. Koskela, K. Lakkala, T. Svendby, and J. Tamminen Biospherical Instruments, San Diego, California, USA Finnish Meteorological Institute, Helsinki, Finland Department of Physics, University of(More)
A principal objective of the Optical Sensors for Planetary Radiance Energy (OSPREy) activity is to establish an above-water radiometer system mounted on an offshore-platform as a lower-cost alternative to existing in-water buoys for the collection of ground-truth observations. The goal is to be able to make high-quality measurements satisfying the accuracy(More)
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