Impacts of solar activity on performance of the IRI-2012 model predictions from low to mid latitudes

S Kumar, EL Tan, DS Murti - Earth, Planets and Space, 2015 - Springer
This study investigates the impacts of solar activity on the performance of the latest release
of International Reference Ionosphere (IRI) model version 2012 (IRI-2012) predictions …

Validation of the IRI-2012 model with GPS-based ground observation over a low-latitude Singapore station

S Kumar, EL Tan, SG Razul, CMS See… - Earth, Planets and Space, 2014 - Springer
The ionospheric total electron content (TEC) in the low-latitude Singapore region
(geographic latitude 01.37° N, longitude, 103.67° E, geomagnetic latitude 8.5° S) for 2010 to …

Latitudinal characteristics of GPS derived ionospheric TEC: a comparative study with IRI 2012 model

M Chakraborty, S Kumar, BK De, A Guha - 2014 - dr.ntu.edu.sg
The present study investigates the variation of Total Electron Content (TEC) using Global
Positioning System (GPS) satellites from four equatorial to mid-latitudes stations over a …

Performance analysis of quiet and disturbed time ionospheric TEC responses from GPS-based observations, IGS-GIM, IRI-2016 and SPIM/IRI-Plas 2017 models over …

KD Reddybattula, SK Panda - Advances in Space Research, 2019 - Elsevier
This paper focuses on the variability of ionospheric Total Electron Content (TEC) over low
latitude Indian sub-continental region during the geomagnetically quiet and disturbed …

Variations of ionospheric TEC due to coronal mass ejections and geomagnetic storm over New Zealand

C Idosa, K Shogile - New Astronomy, 2023 - Elsevier
The variations of ionospheric Total electron content (TEC) due to coronal mass ejections
(CMEs) and geomagnetic storms over New Zealand were studied. TEC data were collected …

Comparison of GPS TEC variations with Holt-Winter method and IRI-2012 over Langkawi, Malaysia

NA Elmunim, M Abdullah, AM Hasbi… - Advances in Space …, 2017 - Elsevier
Abstract The Total Electron Content (TEC) is the ionospheric parameter that has the main
effect on radio wave propagation. Therefore, it is crucial to evaluate the performance of the …

Analysis of ionospheric TEC from GNSS observables over the Turkish region and predictability of IRI and SPIM models

K Ansari, O Corumluoglu, SK Panda - Astrophysics and Space Science, 2017 - Springer
The present study investigates the ionospheric Total Electron Content (TEC) variations in the
lower mid-latitude Turkish region from the Turkish Permanent GNSS Network (TPGN) and …

TEC variation over an equatorial and anomaly crest region in India during 2012 and 2013

S Kumar, K Patel, AK Singh - GPS solutions, 2016 - Springer
Using the global positioning system (GPS) measurements, the total electron content (TEC) at
station Bangalore (13.02° N, 77.57° E geographic; 04.44° N, 150.84° E geomagnetic), lying …

Performance of IRI‐2012 model during a deep solar minimum and a maximum year over global equatorial regions

S Kumar - Journal of Geophysical Research: Space Physics, 2016 - Wiley Online Library
Present paper inspects the prediction capability of the latest version of the International
Reference Ionosphere (IRI‐2012) model in predicting the total electron content (TEC) over …

Modeling and analysis of GPS-TEC low latitude climatology during the 24th solar cycle using empirical orthogonal functions

JRKK Dabbakuti, DV Ratnam - Advances in Space Research, 2017 - Elsevier
Abstract The Total Electron Content (TEC) is an essential component describing the
temporal and spatial characteristics of the ionosphere. In this paper, an empirical orthogonal …