EGU25-11901, updated on 15 Mar 2025
https://doi.org/10.5194/egusphere-egu25-11901
EGU General Assembly 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Poster | Tuesday, 29 Apr, 10:45–12:30 (CEST), Display time Tuesday, 29 Apr, 08:30–12:30
 
Hall X1, X1.109
Insights into the Consistency and Accuracy of dUT1 Estimates from Legacy and VGOS Intensive Sessions
Daniela Thaller, Sadegh Modiri, Gerald Engelhardt, Markus Goltz, Christian Schade, Lisa Klemm, and Alexander Kehm
Daniela Thaller et al.
  • Bundesamt für Kartographie und Geodäsie, Geodesy, Frankfurt am Main, Germany (daniela.thaller@bkg.bund.de)

The BKG VLBI Analysis Center routinely analyzes dUT1 estimates from various Intensive session types, including legacy and VGOS observations. This study evaluates the consistency and accuracy of these dUT1 estimates, focusing on differences between session types and identifying long-term trends.

By analyzing session-specific characteristics and potential biases in dUT1 data, we compare legacy and VGOS sessions to assess how evolving observing strategies impact estimation quality. Our results provide insight into improving dUT1 accuracy and support efforts to refine VLBI observation schedules and analysis methods for high-precision Earth Orientation Parameters.

This study contributes to enhancing the reliability of operational VLBI products and reinforces the role of consistent analysis in advancing geodetic accuracy.

How to cite: Thaller, D., Modiri, S., Engelhardt, G., Goltz, M., Schade, C., Klemm, L., and Kehm, A.: Insights into the Consistency and Accuracy of dUT1 Estimates from Legacy and VGOS Intensive Sessions, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-11901, https://doi.org/10.5194/egusphere-egu25-11901, 2025.