Publication Date:
2021-11-29
Description:
This paper presents a review on the PECASUS service, which provides advisories on enhanced
space weather activity for civil aviation. The advisories are tailored according to the Standards and Recommended
Practices of the International Civil Aviation Organization (ICAO). Advisories are disseminated
in three impact areas: radiation levels at flight altitudes, GNSS-based navigation and positioning, and
HF communication. The review, which is based on the experiences of the authors from two years of
running pilot ICAO services, describes empiricalmodels behind PECASUS products and lists groundand
space-based sensors, providing inputs for themodels and 24/7manualmonitoring activities. As a
concrete example of PECASUS performance, its products for a post-stormionospheric F2-layer depression
event are analyzed in more detail. As PECASUS models are particularly tailored to describe F2-layer
thinning, they reproduce observationsmore accurately than the International Reference Ionospheremodel
(IRI(STORM)), but, on the other hand, it is recognized that the service performance ismuch affected by
the coverage of its input data. Therefore, more efforts will be directed toward systematic measuring of the
availability, timeliness and quality of the data provision in the next steps of the service development.
Description:
Published
Description:
3685
Description:
2A. Fisica dell'alta atmosfera
Description:
JCR Journal
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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