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Dear IGS Community Member,
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<div class="">For your information, please see the following announcement for the IAG Global Geodetic Observing System (GGOS) session, “Improving Infrastructure for Future Science," at this year’s EGU meeting. IGS Community Members are encouraged and welcomed
to submit an abstract to participate in this session with an oral presentation or poster.</div>
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<span style="font-family: "Times New Roman", serif;" class="">We call your attention to the EGU sessions on:<span class="Apple-converted-space"> </span></span><span style="font-family: "Times New Roman", serif;" class="">The Global Geodetic Observing System:
Improving infrastructure for future science (see session abstract below.).</span></div>
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<span style="font-family: "Times New Roman", serif;" class="">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.<span class="Apple-converted-space"> </span></span></div>
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<span style="font-family: "Times New Roman", serif;" class="">The deadline for abstracts is January 15 (see<span class="Apple-converted-space"> </span><a href="https://www.egu2020.eu/" class="">https://www.egu2020.eu/</a>). We urge you to submit an abstract
and join us at this years’ EGU meeting in Vienna.</span></div>
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<span style="font-family: "Times New Roman", serif;" class="">The Global Geodetic Observing System: Improving infrastructure for future science</span></div>
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<span style="font-family: "Times New Roman", serif;" class="">Convener:<span class="Apple-converted-space"> </span></span><span style="font-family: "Times New Roman", serif;" class="">Convener: Kosuke HEKI</span><span style="font-family: "Times New Roman", serif;" class=""></span></div>
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<span style="font-family: "Times New Roman", serif;" class="">Co-conveners: Detlef Angermann, Richard Gross, Michael R. Pearlman</span></div>
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<span style="font-family: "Times New Roman", serif;" class="">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.</span></div>
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<div class="">Best regards,</div>
<div class="">Allison</div>
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<b class="">Allison B. Craddock</b><br class="">
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Director, International GNSS Service Central Bureau<br class="">
Manager of External Relations, IAG Global Geodetic Observing System<br class="">
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Project Delivery Manager, International Coordination and Partnership Office<br class="">
Space Geodesy Program<br class="">
NASA Jet Propulsion Laboratory<br class="">
4800 Oak Grove Drive<br class="">
MS 238-600<br class="">
Pasadena, CA 91109 USA<br class="">
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Mobile: +1 818 237 0425<br class="">
<a href="mailto:craddock@jpl.nasa.gov" class="">craddock@jpl.nasa.gov</a></div>
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