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IERS Message No. 390                                    January 07, 2020
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GGOS session at EGU 2020


Dear Colleagues:

We call your attention to the EGU sessions on: The Global Geodetic
Observing System: Improving infrastructure for future science (see
session abstract below).

This is an opportunity to present an update on the status and plans for
the geodetic networks that provide the essential data for geodetic data
products. In particular, it would be appropriate to have presentations
and posters from the Geodetic Services (IGS, IVS, ILRS, IDS, IGFS, and
the tide gauge network) and Core and co-location sites in operation or
under development. This is one of the principle ways that we keep the
community up-to-date on the infrastructure investment being made to
provide the geodetic data.

The deadline for abstracts is January 15 (see https://www.egu2020.eu/).
We urge you to submit an abstract and join us at this year's EGU meeting
in Vienna.

With best wishes for a Happy New Year,

Mike Pearlman


The Global Geodetic Observing System: Improving infrastructure for
future science

Convener: Kosuke HEKI

Co-conveners: Detlef Angermann, Richard Gross, Michael R. Pearlman


The Global Geodetic Observing System (GGOS) provides measurements of the
time varying gravity, rotation, and shape of the Earth using geodetic
and gravimetric instruments located on the ground and in space. These
measurements need to be accurate to better than a part per billion in
order to advance our understanding of the underlying processes that are
causing the Earth's rotation, gravity, and shape to change. Mass
transport in the global water cycle, sea level and climate change, and
crustal deformation associated with geohazards are examples of
particularly demanding applications of geodetic and gravimetric
measurements. All these measurements require a common reference with the
same precision, like the Terrestrial Reference Frame and the Unified
Height System. GGOS is designed to unite the individual observations and
model into one consistent frame with the highest precision available.
This session should be a platform for discussing improvements to global
geodetic observing systems including multidisciplinary approaches as
well as for single contributions with high precision in a global
network.


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