volume 110, issue D14, Pn/a-n/a 2005
DOI: 10.1029/2004jd005372
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Abstract: [1] Data gathered with a five-channel radiometer are used to analyze the spectral composition of cloud enhancements and attenuations of UV (305, 320, 340, and 380 nm) and photosynthetically active radiation (PAR) (400-700 nm) at Valdivia, Chile (39.8°S), during summer months and within 3 hours from solar noon. Variations are referred to clear-sky days occurring at not too distant dates or obtained as polynomial fit to cloud-free periods on partially cloudy days. Photographic images of the sky were taken sim…

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