Dear colleagues,

This is just a friendly
reminder that the
abstract submission deadline for the upcoming EGU General
Assembly is approaching quickly, i.e., Thursday, January 10,
2019 at 13:00 CET. We are looking
forward to your
contribution for the Session G2.4: Precise Orbit Determination
for Geodesy and
Earth Science.

Session description:

Precise orbit determination
is of central
importance for many applications of geodesy and earth science.
The challenge is
to determine satellite orbits in an absolute sense at the
centimeter or even
sub-centimeter level, and at the millimeter or even
sub-millimeter level in a
relative sense. New constellations of GNSS satellites are
currently being
completed and numerous position-critical missions (e.g.
altimetry, gravity, SAR
and SLR missions) are currently in orbit. All together
outstanding data are
available offering new opportunities to push orbit determination
to the limit
and to explore new applications.

This session aims to make
accessible the
technical challenges of orbit determination and modelling to the
wider
community and to quantify the nature of the impact of dynamics
errors on the
various applications. Contributions are solicited but not
limited to the
following areas: (1) precise orbit determination and validation;
(2) satellite
surface force modelling; (3) advances in modelling atmospheric
density and in
atmospheric gravity; (4) advances in modelling earth radiation
fluxes and their
interaction with space vehicles; (5) analysis of changes in
geodetic
parameters/earth models resulting from improved force
modelling/orbit
determination methods; (6) improvements in observable modelling
for all
tracking systems, e.g. SLR, DORIS, GNSS and their impact on
orbit
determination; (7) advances in combining the different tracking
systems for
orbit determination; (8) the impact of improved clock modelling
methods/space
clocks on precise orbit determination; (9) advances in modelling
satellite attitude.

Note that the session G2.4
will also
participate in the peer-reviewed joint proceedings of the
geodesy division that
will be published in the EGU open-access journal Advances in
Geosciences (see
https://www.advances-in-geosciences.net/).

On behalf of the convenors
of session G2.4,

Adrian Jggi

Co-conveners: Urs
Hugentobler, Oliver
Montenbruck, Heike Peter, Jose van den IJssel

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 Adrian Jaeggi                     Astronomical Institute, University of Bern
 adrian.jaeggi@aiub.unibe.ch       Sidlerstrasse 5, CH-3012 Bern, Switzerland
 http://www.aiub.unibe.ch/         Tel: +41 31 6318596    Fax: +41 31 6313869
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