************************************************************************ IERS Message No. 288 January 06, 2016 ************************************************************************ EGU Session "High-Frequency Geophysical Signals in Global Geodesy" Dear Colleagues, Together with Tonie van Dam, Jean-Paul Boy, and Michael Schindelegger, I am organizing a session on "High-Frequency Geophysical Signals in Global Geodesy" at the EGU General Assembly 2016 in Vienna. The session description is given below, and I'd like to kindly ask you to consider a contribution by submitting an abstract until Jan 13th, 1 p.m. Central European Time: http://meetingorganizer.copernicus.org/EGU2016/session/21446 Best regards, Henryk Dobslaw G3.3: High-Frequency Geophysical Signals in Global Geodesy Convener: Henryk Dobslaw (GFZ Potsdam) Co-Conveners: Tonie van Dam (University of Luxembourg), Jean-Paul Boy (Universite de Strasbourg), Michael Schindelegger (Vienna University of Technology) Geodetic observation techniques have been advanced rather rapidly during the most recent years, being now not only sensitive to time-invariant aspects of the Earth's gravity field, surface geometry and rotation, but also to temporal changes at periods from hours to several decades. Whereas long-periodic variations are typically well monitored from accumulating observations over a certain period of time, it is quite common to remove variability at periods from hours to days by means of independent background or correction models which are often assumed to be error-free - a presumption that is not always justified from the validation of such models against independent observational evidence. For this session, we solicit contributions dealing with new geophysical model data-sets suitable to predict individual high-frequency aspects of space geodetic techniques caused by - but not limited to - tides in the solid Earth, oceans and atmosphere and their corresponding crustal deformations that affect VLBI station positions; temperature and moisture variability in the troposphere modifying GNSS signal dispersion; rapid changes in the amount of terrestrially stored water both in the root zone and in surface water bodies and its consequences for the time-variable gravity field; as well as relative changes in regional to global sea-level measured by tide gauges and satellite altimetry that are driven by the mass and energy exchange of the global oceans with other components of the Earth system. In addition, we welcome reports about new approaches for the characterization and quantification of errors of such geophysical model data-sets suitable for global geodetic applications, and in particular about attempts to explicitly include error estimates into the geodetic parameter estimation process. At the same time, contributions informing about the use of high-frequency information from space geodesy for geophysical data assimilation experiments are equally appreciated. ************************************************************************ IERS Messages are edited and distributed by the IERS Central Bureau. If not stated otherwise, the IERS is only the distributor of the message and is not responsible for its content. To submit texts for distribution and to subscribe or unsubscribe, please write to . Archives: http://www.iers.org/Messages/ ************************************************************************