A new global empirical NmF2 model for operational use in radio systems
Hoque, Mohammed Mainul and Jakowski , Norbert (2011) A new global empirical NmF2 model for operational use in radio systems. Radio Science, 46 (RS6015). American Geoscience Union (AGU). DOI: 10.1029/2011RS004807 .
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Official URL: http://www.agu.org/pubs/crossref/2011/2011RS004807.shtml
The ionospheric F2 region around the peak density height hmF2 of about 250 – 500 km causes the most pronounced impact on transionospheric radio wave propagation. Therefore, the peak electron density of the F2 layer NmF2 is a key parameter for characterizing the ionosphere. We present an empirical model approach that allows determining global NmF2 with a limited number of model coefficients. The non-linear approach needs 13 coefficients and a few empirically fixed parameters for describing the NmF2 dependencies on local time, geographic/geomagnetic location and solar irradiance and activity. The model approach is applied to a vast quantity of global NmF2 data derived from GNSS radio occultation measurements by CHAMP, GRACE and COSMIC satellite missions and about 60 years of processed NmF2 data from about 180 worldwide ionosonde stations. The model fits to these input data with the same standard and root mean squared (RMS) deviations of 2×1011 m-3. The proposed Neustrelitz global NmF2 model is climatological, i.e., the model describes the average behaviour under quiet geomagnetic conditions. A preliminary comparison with the electron density NeQuick model reveals similar results for NmF2 with RMS deviations in the order of 2×1011 m-3 and 5×1011 m-3 for low and high solar activity conditions, respectively.
|Title:||A new global empirical NmF2 model for operational use in radio systems|
|Journal or Publication Title:||Radio Science|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Publisher:||American Geoscience Union (AGU)|
|Keywords:||Ionospheric peak electron density NmF2 model, Empirical model with only 13 coefficients, Useful for transionospheric radio wave propagation|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben Weltraumwetter (old)|
|Institutes and Institutions:||Institute of Communication and Navigation|
|Deposited By:||Mohammed Mainul Hoque|
|Deposited On:||24 Jan 2012 09:07|
|Last Modified:||26 Mar 2013 13:37|
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