[IGSMAIL-5379]: AGU Session G04 : Nonsecular Changes and Variability in Regional Sea Level

[Emma Hill]

******************************************************************************
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 at cfa.harvard.edu

Rui Ponte
Atmospheric and Environmental Research, Inc.
rponte at aer.com