[IGSMAIL-8542] ITRF2020-u2023 is available on line

[Zuheir Altamimi]

Author: Zuheir Altamimi (zuheir.altamimi at ign.fr) 
Subject: ITRF2020-u2023 is available on line 

Dear ITRF Users and Colleagues, 

Three years after its release, the ITRS Center has initiated regular (yearly) updates of ITRF2020. 

The IERS ITRS Center at IGN has the pleasure to announce to the community the 
availability of the ITRF2020-u2023 solution at the dedicated web site: 

https://itrf.ign.fr/en/solutions/ITRF2020-u2023 

ITRF2020-u2023 is the first ITRF020 update, generated by adding three years (2021.0 – 2024.0) of data after the end of the ITRF2020 input data. 

I want to take this opportunity to acknowledge the enormous efforts of the IAG Services (IDS, IGS, ILRS, IVS) and their Analysis and Combination Centers for their contributions by providing extended time series of station positions and Earth Orientation Parameters (EOPs). 
The quality of the ITRF2020-u2023 is certainly benefiting from these technique 
improved solutions. Many thanks to a number of institutions and individuals 
for their contributions to the ITRF2020-u2023 project. 

The ITRF2020-u2023 web site contains the most important results and information 
regarding the ITRF2020-u2023 combination. It will be updated regularly to add more 
details and results useful to the ITRF users. 

For any comment, question or specific request, please contact: 
itrf at ign.fr 

Cordially 
Zuheir Altamimi 
Head, IERS ITRS Center 
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