Satellite Data for Atmospheric Monitoring at the Pierre Auger Observatory - INSPIRE

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Satellite Data for Atmospheric Monitoring at the Pierre Auger Observatory

Pierre Auger

Collaboration

•

Pedro Abreu

2021

11 pages

Published in:

PoS ICRC2021 (2021) 235

Contribution to:

- ICRC 2021
, 235

Published: 2021

DOI:

10.22323/1.395.0235

reference search5 citations

Citations per year

Abstract: (SISSA)

Atmospheric monitoring over the 3000

km^{2}

of the Pierre Auger Observatory can be supplemented by satellite data. Methods for night-time cloud detection and aerosol cross-checking were created using the GOES-16 and Aeolus satellites, respectively. The geostationary GOES-16 satellite provides a

100\%

up-time view of the cloud cover over the observatory. GOES-13 was used until the end of 2017 for cloud monitoring, but with its retirement a method based on GOES-16 data was developed. The GOES-16 cloud detection method matches the observatory’s vertical laser cloud detection method at a rate of

∼90\%

. The Aeolus satellite crosses the Pierre Auger Observatory several times throughout the year firing UV-laser shots. The laser beams leave a track of scattered light in the atmosphere that can be observed by the light sensors of the observatory fluorescence telescopes. Using a parametric model of the aerosol concentration, the laser shots can be reconstructed with different combinations of the aerosol parameters. A minimization procedure then yields the parameter set that best describes the aerosol attenuation. Furthermore, the possibility of studying horizontal homogeneity of aerosols across the array is being investigated.

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Figures(0)

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