Publication Date:
2017-04-04
Description:
DIAS (European Digital Upper Atmosphere Server) effective sunspot
number – R12eff was recently introduced as a proxy of the ionospheric
conditions over Europe for regional ionospheric mapping
purposes. Although a pre-processing step for the real-time update of the
Simplified Ionospheric Regional Model (SIRM) to real-time conditions,
R12eff is available in real time by DIAS system (http://dias.space.noa.gr)
for independent operational use. In this paper we discuss the efficiency
of R12eff to specify ionospheric conditions over Europe. For this purpose,
the diurnal R12eff’s reference pattern was determined on monthly
basis and for different solar cycle phases. The deviation of the real-time
R12eff estimates from the reference values, ΔR12eff was found to be
highly correlated with the foF2 storm-time disturbances, especially during
large scale effects indicating that DIAS-R12eff can provide a reliable
estimator of the ionospheric activity level over a substantial part of Europe
and a powerful tool for ionospheric specification applications.
Description:
Published
Description:
491-512
Description:
1.7. Osservazioni di alta e media atmosfera
Description:
3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
Description:
JCR Journal
Description:
restricted
Keywords:
effective sunspot number
;
mid-latitude ionosphere
;
ionospheric disturbances
;
01. Atmosphere::01.02. Ionosphere::01.02.03. Forecasts
;
01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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