EGU General Assembly 2007

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	Quick Search Title + Author Title Author Abstract Number Schedule Number Nonlinear Processes in Geosciences Nonlinear Processes:in Geosciences NP2 Empirical Modeling NP3 Scale, Scaling and Nonlinear Variability NP4 Nonlineaar time-series analysis NP5 Predictability NP6 Turbulence and Nonlinear Waves co-listed sessions Programme Groups Great Debates Union Symposia Educational Symposia Atmospheric Sciences Biogeosciences Climate: Past, Present, Future Cryospheric Sciences Energy, Resources and the Environment Geochemistry, Mineralogy, Petrology & Volcanology Geodesy Geodynamics Geomorphology Geosciences Instrumentation and Data Systems Hydrological Sciences Isotopes in Geosciences: Instrumentation and Applications Magnetism, Palaeomagnetism, Rock Physics & Geomaterials Natural Hazards Nonlinear Processes in Geosciences Ocean Sciences Planetary and Solar System Sciences Seismology Soil System Sciences Solar-Terrestrial Sciences Stratigraphy, Sedimentology and Palaeontology Tectonics and Structural Geology Medal Lectures EGU Short Courses Keynote Lectures Townhall Meetings Division Business Meetings Editorial Board Meetings Union Meetings Splinter Meetings Forums   Information - NP5.02 Data assimilation in the presence of nonlinearities (co-listed in AS) Event Information Assimilation of observations in numerical models of geophysical processes is becoming an increasingly more important component of geosciences. More and more observations (in particular, satellite observations, as well as all forms of tomographic observations) are 'indirect' observations, bearing on complicated combinations (often, integrals over some line in space) of the physical parameters to be estimated. The associated 'data retrieval' procedures are either an integral part of assimilation, or a necessary preliminary step preceding assimilation proper. This session will be devoted to the presentation and discussion of methods for data assimilation, and more generally, for inverse problems, in ocean and atmosphere dynamics, remote sensing, solid earth geophysics, atmospheric chemistry, hydrology and in all fields of geophysics. The presentation and discussion of recent progress due to the use of data assimilation in geophysics will be of particular interest. Special emphasis will be put on methods and recent developments of mathematical aspects of data assimilation and inverse problems, particularly in situations when a local linear hypothesis is not valid. Contributions dealing with algorithmic aspects and numerical implementation of data assimilation are welcome. Preliminary List of Solicited Speakers Rolf H. Langland (Naval Research Laboratory, USA) Co-Sponsorship AGU Nonlinear Focus Group General Statement The information contained hereafter has been compiled and uploaded by the Session Organizers via the "Organizer Session Form". The Session Organizers have therefore the sole responsibility that this information is true and accurate at the date of publication, and the conference organizer cannot accept any legal responsibility for any errors or omissions that may be made, and he makes no warranty, expressed or implied, with regard to the material published. Back to Session Programme

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