1 Ocak 2018 Dergi makalesi Açık Erişim

Gulyaeva, T. L.; Arikan, F.; Sezen, U.; Poustovalova, L. V.

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{
  "DOI": "10.1016/j.jastp.2018.03.025", 
  "abstract": "In view of the recent recalibration of the sunspot number time series SSN2, a need has arisen to re-evaluate solar and ionospheric indices in the International Reference Ionosphere, IRI, and its extension to the Plasmasphere, IRI-Plas models, which are developed using the predecessor SSN1 index. To improve efficiency of the model, eight solar proxy indices are introduced in IRI-Plas system: the daily measured solar emissions, the Ottawa 10.7-cm radio flux F10.7 and the H Lyman-alpha 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. The regression relations are deduced between the different solar and ionospheric proxy indices smoothed by 12-month sliding window. The IG, TEC and GEC saturation or amplification effect is observed towards the solar maximum. The SSN1 and F10.7 data serve as a default IRI-Plas input while the rest indices are scaled to SSN1 units envisaged by the F2 layer peak maps. Relevant subroutines are incorporated in IRI-Plas system for automatic conversion of uses predefined index to other related indices which are applied by the different model procedures.", 
  "author": [
    {
      "family": "Gulyaeva", 
      "given": " T. L."
    }, 
    {
      "family": "Arikan", 
      "given": " F."
    }, 
    {
      "family": "Sezen", 
      "given": " U."
    }, 
    {
      "family": "Poustovalova", 
      "given": " L. V."
    }
  ], 
  "container_title": "JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS", 
  "id": "34605", 
  "issued": {
    "date-parts": [
      [
        2018, 
        1, 
        1
      ]
    ]
  }, 
  "page": "122-128", 
  "title": "Eight proxy indices of solar activity for the International Reference Ionosphere and Plasmasphere model", 
  "type": "article-journal", 
  "volume": "172"
}