Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iauss...7e..34h&link_type=abstract
Astronomy in Antarctica, 26th meeting of the IAU, Special Session 7, 22-23 August, 2006 in Prague, Czech Republic, SPS7, #34
Astronomy and Astrophysics
Astronomy
Scientific paper
Atmospheric aerosol optical depth (AOD) data from the Antarctic plateau are very sparse. Some AOD measurements were performed during austral summer but none during winter, although some night aerosol information has been gathered from Lidar measurements in the coastal areas. Satellite measurements are very difficult as a consequence of the low AOD values, the high surface reflectivity, and the long and cold polar night. The application of an astronomical "Star Photometer", by using stellar light as a pencil probe through the atmosphere, can close this gap. Year-round measurements based on Lidar, Sun and Star Photometers, and in-situ measurements will allow a detailed study of the inter-annual and seasonal variations of AOD over the high interior plateau, especially the effects and variability during polar night. The combined atmospheric and astronomical German activities at Dome C are part of the international project TAVERN (quantification of tropospheric aerosol and thin clouds variability including the radiation budget over the east Antarctic plateau) under responsibility of CNR-ISAC Bologna; and also recognized by the EU network ARENA (Antarctic Research: A European Network in Astronomy). With the "Star Photometer" we intend to observe bright stars for the atmospheric AOD program in 2009 but later on, roughly in 2012, to extend the nightly observations with the help of a more ambitious astronomical experiment called ICE-T (International Concordia Explorer Telescope). Both systems will be installed in a specially designed 4m Radom and should enable a combined analysis to study horizontal features of nightly aerosols. This activity is planned in extension of ICE-T's own astronomical program, i.e. planet transit search, stellar surface activity, and various miscellaneous topics.
Gröschke A.
Herber Andreas
Strassmeier Klaus
Vitale Vicenzo
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