The Investigation of Relationship between Solar Parameters and Total Electron Content over Mid-Latitude Ionosphere

Yıl 2017, , 707 - 716, 30.09.2017

Ramazan Atıcı , Selçuk Sağır

https://doi.org/10.18466/cbayarfbe.339346

Cited By: 2

Öz

In
this study, the relationship with solar parameters (F10.7 index, proton density
and proton speed) of the Total Electron Content (TEC) values obtained from
IONOLAB and IRI-2012 models is statistically examined during equinox months
(March and September) of 2009 over mid-latitude ionosphere for night and day
time. As a statistical tool, a multiple regression model is used to determine
the relationship between solar parameters and TEC values. At Universal Time
(UT) 1200, the explainable rates by solar parameters of TEC changes are
calculated as 58% and 55% for IONOLAB TEC values in March and September equinox
months, on the other hand these rates are obtained as 99% and 57%  for IRI-2012 TEC values. At 2400UT, 57 % and 39 % of changes in IONOLAB and 51 % and 59 % of changes in IRI-2012 TEC values during equinox
months could be explainable by solar parameters,
respectively. It is
observed that the IONOLAB-TEC values are higher than IRI-2012 TEC values on
both equinox months. Also, IONOLAB-TEC values on September 2009 are greater
than ones on March 2009. When compared to the two models, we concluded that
IONOLAB model is more sensitive than IRI-2012 model to the changes occurring in
the sun over mid-latitude.

Anahtar Kelimeler

IRI-2012, IONOLAB, Mid-Latitude Ionosphere, Solar Parameters, TEC

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