Content-Transfer-Encoding: 7bit Message-Id: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed To: igsmail@igscb.jpl.nasa.gov From: Emma Hill Subject: [IGSMAIL-5379]: AGU Session G04 : Nonsecular Changes and Variability in Regional Sea Level Date: Thu, 13 Jul 2006 15:22:11 -0400 Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 13 Jul 12:21:31 PDT 2006 Message Number 5379 ****************************************************************************** Authors: Emma Hill and Rui Ponte Dear Colleagues, We would like to draw your attention to the following session at the AGU Fall Meeting: "G04: Nonsecular Changes and Variability in Regional Sea Level" Much attention has been paid to long-term, global, secular sea-level rates. However, it is clear that sea level also varies on seasonal, interannual and decadal time scales, and that these variations are not globally uniform. These nonsecular sea-level variations are not well understood, but they are potentially important in accounting for observed discrepancies between historic tide-gauge data and data from recent altimeter missions such as Topex/Poseidon and Jason-1. Long- period variability in sea-level records also makes it difficult to verify the existence of accelerations in sea-level rise, and obscures regionally-varying signals such as those from melting ice sheets. Many of these variations have oceanographic origins, e.g. changes in heat content and circulation caused by climate patterns such as ENSO and NAO, and are interesting in their own right as a key to understanding the global water budget. Long-period crustal deformation, from sources such as post-seismic deformation after large earthquakes and unloading as ice sheets melt, will also be evident in the tide-gauge record. To this end, this session aims to bring together both oceanographers and geodesists to discuss the current state of understanding of nonsecular variability in regional sea level. Focus will be given to studies that provide insights into separating nonsecular or regional signals of a particular origin, either geodetic or oceanographic, seasonal or longer-period, from measurements of sea level. Modeling studies or synthesis efforts involving the combination of models and data are also emphasized. We encourage you to consider submitting a paper for this session. We are especially looking forward to interdisciplinary discussions. This session is cosponsored by the Geodesy and Ocean Sciences sections. Abstract deadlines are: 1 September for postal mail 7 September for electronic submissions The AGU Fall Meeting will be held 11-15 December 2006 in San Francisco. For further information please see the AGU website: http://www.agu.org/meetings/fm06/ With our thanks, Emma Hill and Rui Ponte --- Emma Hill Harvard-Smithsonian Center for Astrophysics ehill@cfa.harvard.edu Rui Ponte Atmospheric and Environmental Research, Inc. rponte@aer.com