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Elsevier, Astroparticle Physics, 9(35), p. 591-607

DOI: 10.1016/j.astropartphys.2011.12.002

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Description of Atmospheric Conditions at the Pierre Auger Observatory using the Global Data Assimilation System (GDAS)

Journal article published in 2012 by B. Kégl, O. Krömer, P. Abreu, M. Aglietta, M. Ahlers, E. J. Ahn, I. F. M. Albuquerque, D. Allard, I. Allekotte, D. Lahurd, J. Allen, P. Allison, A. Almela, J. Alvarez Castillo, J. Alvarez-muñiz and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Data provided by SHERPA/RoMEO

Abstract

Atmospheric conditions at the site of a cosmic ray observatory must be known for reconstructing observed extensive air showers. The Global Data Assimilation System (GDAS) is a global atmospheric model predicated on meteorological measurements and numerical weather predictions. GDAS provides altitude-dependent profiles of the main state variables of the atmosphere like temperature, pressure, and humidity. The original data and their application to the air shower reconstruction of the Pierre Auger Observatory are described. By comparisons with radiosonde and weather station measurements obtained on-site in Malarg̈ue and averaged monthly models, the utility of the GDAS data is shown.