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  Activities of the JWG 4.3.4 - Validation of VTEC models for high-precision and high resolution applications

Krypiak-Gregorczyk, A., Komjathy, A., Wielgosz, P., Milanowska, B., Jarmołowski, W., Goss, A., Erdogan, E., Schmidt, M., Liu, Q., Lyu, H., Hernández-Pajares, M., Hoque, M., Shengfeng, G., Ghoddousi-Fard, R., Orus-Perez, R. (2023): Activities of the JWG 4.3.4 - Validation of VTEC models for high-precision and high resolution applications, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4537

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020949 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020949_2
Genre: Conference Paper

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 Creators:
Krypiak-Gregorczyk, Anna1, Author
Komjathy, Attila1, Author
Wielgosz, Pawel1, Author
Milanowska, Beata1, Author
Jarmołowski, Wojciech1, Author
Goss, Andreas1, Author
Erdogan, Eren1, Author
Schmidt, Michael1, Author
Liu, Qi1, Author
Lyu, Haixia1, Author
Hernández-Pajares, Manuel1, Author
Hoque, Mainul1, Author
Shengfeng, Gu1, Author
Ghoddousi-Fard, Reza1, Author
Orus-Perez, Raul1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: The global and regional ionospheric maps are often used for a wide range of applications in geosciences, in particular to support precise positioning, but also for geophysical and atmospheric studies. There are currently many analysis centers and research groups providing operational and test VTEC maps. However, IGS ACs and other groups use different mathematical models and estimation techniques resulting different resolutions, accuracies and time delays of their products. Therefore, there is a need to compare and validate existing VTEC models. In this presentation, we present the overview talk about the work within the last 4 years of the IAG Joint Working Group (JWG 4.3.4) on validation of VTEC models for high-precision and high resolution applications. Among others, we evaluated (1) the accuracy and consistency of the IAAC GIMs during high and low solar activity periods of the 24th solar cycle, (2) the accuracy the two most popular ionospheric mapping functions - SLM and MSLM, (3) deterministic and stochastic approaches to VTEC modelling, (4) GIMs performance in single point and precise point positioning GNSS applications, (5) the accuracy and consistency of GNSS-derived VTEC maps and empirical models, (6) GIMs performance using external data (JASON) and GNSS, (7) the accuracy of new global ionosphere models.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
 Publishing info: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4537
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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