[IGSMAIL-8000] vEGU2021 Session G2.3: New strategies for consistent geodetic products and improved Earth system parameters

[Benjamin Männel]

Dear colleagues,

We would like to draw your attention to the session “G2.3New strategies 
for consistent geodetic products and improved Earth system parameters” 
organized at the upcoming virtual General Assembly of the European 
Geosciences Union (vEGU21), taking place from April 19-30, 2021.Please 
consider submitting an abstract to this session. The deadline for 
abstract submission is January 13, 2021 at 13:00 CET. We are looking 
forward to your contribution.

vEGU2021 format: https://egu21.eu/about/provisional_format_of_egu21.html 
<https://egu21.eu/about/provisional_format_of_egu21.html>
Abstract submission: 
https://meetingorganizer.copernicus.org/EGU21/abstractsubmission/39908

Best wishes,
Benjamin Männel, Mathis Bloßfeld, Benedikt Soja, Daniela Thaller

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Session description:
The geodetic products that describe the Earth system are of high 
quality, although the Global Geodetic Observing System (GGOS) goals of 1 
mm accuracy and 0.1 mm/yr stability for the terrestrial reference frame 
(TRF), the Earth Orientation Parameters (EOPs) and the static and 
time-variable gravity field of the Earth are not yet fully reached. 
There are limiting factors that need to be detected, analyzed, and 
quantified. In this context, the usage of a sub-set of available 
observations only, degrading station equipment quality, limitations in 
the observing concepts as well as deficiencies in the analysis and 
combination methods evoke the question whether and how the derived Earth 
system products can be improved. In principle, there are two ways to 
investigate the best methods for improving geodetic products. (A) New 
strategies of handling, analyzing, and combining already existing 
space-geodetic observations need to be developed. (B) The existing 
observing infrastructure should be extended by new stations, new 
satellite missions, and new types of observations. To realize new 
observing concepts, simulation studies are indispensable.

This session provides a platform for presentations of new strategies, 
new analysis methods and simulation studies seeking to improve the 
determination of Earth system parameters and geodetic products such as 
the Terrestrial and Celestial Reference Frame (TRF, CRF), EOPs, Earth’s 
gravity field, satellite orbits, as well as atmospheric key parameters. 
Novel approaches to achieve a consistent estimation of the three pillars 
of geodesy, i.e., geometry, orientation and gravity, are highly 
welcomed. Investigations reaching for a better consistency between the 
individual parameters and between the products (TRF, CRF, EOP, gravity 
field) are also welcomed. In addition, we are seeking contributions 
focusing on new combination approaches and alternative analysis concepts 
such as employing co-locations in space, clock ties, or atmospheric 
ties. Simulation studies investigating dedicated co-location satellites 
or novel observation methods (e.g. inter-satellite links or VLBI 
tracking of GNSS satellites) and their potential for improving the 
geodetic parameters are also highly encouraged.

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