The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica

Details The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9711561c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. D11, July 20, 1992, p. 11,561-11,565. Research supported by Antar

Physics

11

Antarctic Regions, Fraunhofer Lines, Sodium, Solar Spectra, Sunlight, Daytime, Diurnal Variations, Fabry-Perot Spectrometers

Scientific paper

A dual, scaning Fabry-Perot spectrometer at Mawson (Antarctica) was used to obtain simultaneous direct solar and daytime sky spectra of the sodium D2 Fraunhofer absorption line at 589 nm. The intensity of the Ring component of skylight was determined from these spectra. The observations indicated that the absolute intensity of this component varied diurnally, maximizing at local noon. Observations over ice and snow gave greater absolute Ring intensities than those over open water. Fractional Ring intensities were typically 6 percent of the adjacent day sky continuum. During full daylight, no significant variation in fractional Ring intensity was observed with changing solar zenith angle; sharp increases were observed during twilight. These observations are consistent with inelastic molecular scattering in the atmosphere being the cause of the Ring effect.

Affiliated with

Also associated with

No associations

Rating

The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1208633