****************************************************************************** dorismail 02-Dec-2019 08:00:35 Message No 1199 ****************************************************************************** Author: Couhert Alexandre Subject: EGU2020, Session G2.3: Precise Orbit Determination for Geodesy and Dear colleagues, We would like to draw your attention to the session "G2.3 Precise Orbit Det= ermination for Geodesy and Earth Science" organized at the upcoming General= Assembly of the European Geosciences Union in Vienna, Austria, May 03 - 08= , 2020. Session description: Precise orbit determination is of central importance for many applications = of geodesy and earth science. The challenge is to determine satellite orbit= s 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 con= stellations of GNSS satellites are currently being completed and numerous p= osition-critical missions (e.g. altimetry, gravity, SAR and SLR missions) a= re 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 dete= rmination and modelling to the wider community and to quantify the nature o= f the impact of dynamics errors on the various applications. Contributions = are solicited but not limited to the following areas: (1) precise orbit det= ermination and validation; (2) satellite surface force modelling; (3) advan= ces in modelling atmospheric density and in atmospheric gravity; (4) advanc= es in modelling earth radiation fluxes and their interaction with space veh= icles; (5) analysis of changes in geodetic parameters/earth models resultin= g from improved force modelling/orbit determination methods; (6) improvemen= ts in observable modelling for all tracking systems, e.g. SLR, DORIS, GNSS = and their impact on orbit determination; (7) advances in combining the diff= erent tracking systems for orbit determination; (8) the impact of improved = clock modelling methods/space clocks on precise orbit determination; (9) ad= vances in modelling satellite attitude. Please consider submitting an abstract to this dedicated orbit session. The= deadline for abstract submission is January 15, 2020 at 13:00 CET. We are = looking forward to your contribution. On behalf of the convenors of session G2.3, Adrian J=E4ggi Co-conveners: Alexandre Couhert, Urs Hugentobler, Oliver Montenbruck, Heike= Peter -- --------------------------------------------------------------------------= --- Adrian Jaeggi Astronomical Institute, University of Be= rn adrian.jaeggi@aiub.unibe.ch Sidl= erstrasse 5, CH-3012 Bern, Switzerland http://www.aiub.unibe.ch/ Tel: +41 31 6318596 Fax: +41 31 63138= 69 --------------------------------------------------------------------------= ---