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<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">Dear colleagues, <br>
<br>
We would like to draw your attention to the session “G2.3<span
style="mso-spacerun:yes"> </span>New 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.</span><span style="mso-ansi-language:EN-US"
lang="EN-US"> 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.
</span> </p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">vEGU2021 format: <span class="MsoHyperlink"><a
href="https://egu21.eu/about/provisional_format_of_egu21.html">https://egu21.eu/about/provisional_format_of_egu21.html</a></span><br>
Abstract submission: </span><a class="moz-txt-link-freetext"
href="https://meetingorganizer.copernicus.org/EGU21/abstractsubmission/39908">https://meetingorganizer.copernicus.org/EGU21/abstractsubmission/39908</a><span
style="mso-ansi-language:EN-US" lang="EN-US"></span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US"> </span><span style="mso-ansi-language:EN-US"
lang="EN-US">Best wishes, </span><span
style="mso-ansi-language:EN-US" lang="EN-US"></span><span
style="mso-ansi-language:EN-US" lang="EN-US"><br>
Benjamin Männel, Mathis Bloßfeld, Benedikt Soja, Daniela Thaller</span><span
style="mso-ansi-language:EN-US" lang="EN-US"><span
style="mso-ansi-language:EN-US" lang="EN-US"></span> </span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">-----------------<br>
</span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">Session description: <br>
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. <br>
<br>
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.</span></p>
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