Comparison between IRI-2012 and GPS-TEC observations over the western Black Sea

Regularized Estimation of TEC from GPS Data for Certain Midlatitude Stations and Comparison with the IRI Model

Regularized estimation of Total Electron Content (Reg-Est) is a novel technique which can combine signals from all the satellites for a given instant and given station and estimate the vertical TEC (VTEC) values for any desired period without missing any important features in the temporal or spatial domain. The preprocessed signals from all the satellites that are received for a certain time pe...

First simultaneous observations of daytime MSTIDs over North America using GPS-TEC and DEMETER satellite data

GPS ionospheric tomography: A comparison with the IRI-2001 model over South Korea

The International Reference Ionosphere model 2001 (IRI-2001) is one of the most comprehensive empirical models of the ionosphere and has been widely used to estimate the electron density profiles in the altitude ranging from about 60 to 2000 km and the total electron content (TEC) at any given location, time and date, which reflect smooth-average global ionospheric behaviors. However, whether i...

Variability of GPS-Based Precipitable Water Vapor over Antarctica: Comparison Between Observations and Predictions

This paper presents observations of precipitable water vapor (PWV) from the Global Positioning System (GPS) signals and the surface meteorological measurements. Three stations in Antarctica that are Scott Base (SBA), Casey (CAS1), Macquarie Island (MAC1) and Syowa (SYOG) were taken as the location of observation. For analysis, the data gathered from January to December 2004 are analyzed. The PW...

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

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 2011 was retrieved using the data from global positioning system (GPS)-based measurements. The observed TEC from GPS is compared with those derived from the latest International Reference Ionosphere (IRI)-2012 model with ...