The atmospheric monitoring system of the Pierre Auger Observatory.
Valore L. per la Collaborazione Pierre Auger
III - Astrofisica
Aula GSSI Ex ISEF - Biblioteca - Venerdì 27 h 15:30 - 19:00
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The atmospheric monitoring system of the Pierre Auger Observatory comprises a large number of devices, many of which provide data which are used in the analysis of the extensive air showers data collected by the Fluorescence Detector (FD) of the Observatory. The influence of the atmosphere, and in particular of the aerosol content which is the most variable component both in time and space, makes a continuous monitoring of the atmospheric properties mandatory to apply the right corrections to the FD data. The Pierre Auger Observatory has collected atmospheric data since 2004. In this contribution, the atmospheric monitoring system will be described, together with the collected data and their use in the air shower analysis.