Eight proxy indices of solar activity for the International Reference Ionosphere and Plasmasphere model

Highlights

• Eight solar proxy indices are incorporated in IRI-Plas model for 1948–2020 including predictions out of period of observation.

• Ionospheric proxies are IG-foF2, TEC-noon, Global electron content GEC.

• Solar proxies include SSN1, SSN2, F10.7, Lyman-alpha, MgII.

• Relations established between all solar proxies.

• Saturation or amplification effect is observed with several proxies towards solar maximum.

Abstract

…recent recalibration of the sunspot number time series SSN2, a need has arisen to re-evaluate solar and ionospheric indices… daily measured solar emissions, the Ottawa 10.7-cm radio flux F10.7 and the H Lyman-α line at 121.6 nm; the core–to–wing ratio of the magnesium ion h and k lines at 279.56 and 280.27 nm, MgII index; sunspot number SSN1 observed before 05.2015 and modelled afterwards; re-calibrated SSN2 sunspots time series; the ionosonde foF2-based global IG-index and the Global Electron Content, GEC, index, the new ionospheric TEC-noon index based on GPS-derived Total Electron Content measurements at 288 IGS stations for 1994–2018…

Authors:
T. L. Gulyaeva a, F. Arikan b, U. Sezen b, L. V. Poustovalova a
a IZMIRAN, Troitsk, Moscow, 108840, Russia
b Department of EEE, Hacettepe University, Beytepe, Ankara, 06800, Turkey
Journal of Atmospheric and Solar-Terrestrial Physics
Volume 172, July 2018, Pages 122-128
https://doi.org/10.1016/j.jastp.2018.03.025
Eight proxy indices of solar activity for the International Reference Ionosphere and Plasmasphere model

 

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