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

Journal Article · Sun Jan 01 00:00:00 EST 2012

DOI:https://doi.org/10.1016/j.astropartphys.2011.12.002· OSTI ID:1034827

Abreu, P; Aglietta, M; Ahlers, M; Ahn, E J; Albuquerque, I F.M.; Allard, D; Allekotte, I; Allen, J; Allison, P; Almela, A; Alvarez Castillo, J

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 Malargue and averaged monthly models, the utility of the GDAS data is shown.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1034827
• Report Number(s): FERMILAB-PUB-12-011-AD-AE-CD-TD; arXiv eprint number arXiv:1201.2276; TRN: US201204%%197
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
DATA PROCESSING
EARTH ATMOSPHERE
EXTENSIVE AIR SHOWERS
FORECASTING
GLOBAL ANALYSIS
HUMIDITY
METEOROLOGY
MONITORING
PRESSURE MEASUREMENT
TEMPERATURE MEASUREMENT
WEATHER
Astrophysics