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Effects of Atmospheric Aerosol, Measured by Sun and Star Photometer (KOL 03) (photometer measurements)

long-term measurements by sun-photometer (both in the village of Ny-Alesund) as well as on Zeppelin station for a comparison of the two sites. During Polar night measurements are completed by a star-phootmeter.

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Project date

Starts
1991-01-01

Ends
2022-12-31

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Project type

  • long-term monitoring

Discipline

  • atmosphere

Project Keywords

  • atmosphere / aerosols

Fieldwork information

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Summary

In recent years, much attention has been directed towards understanding the effects of atmospheric aerosols on a variety of processes in the earth's atmosphere. Aerosols play an important role in limiting visibility, they serve as nuclei for the formation of fog and cloud droplets, they affect the earth radiation budget, and thus the climate, both directly and indirectly. Additional they inhibit the propagation of electromagnetic radiation. The Arctic aerosols possible have important climatic, ecological, and global change implication, and so aerosol measurements are crucial over the entire year. Since 1991 Sun photometer observations of the polar atmopheric aerosol have been performed at the Koldewey Station in Ny-Ålesund, Spitzbergen. In order to complete the coverage and quality of measurements during the polar night a high sensitive Star photometer is installed since January 1996. Both measurements, the daylight Sun photometer measurements and night Star photometer measurements will be continued.

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