E-mail Announcements

Subject: Joint Assembly of the European Geosciences Union (EGU) and the American Geophysical Union (AGU)

Dear Colleague,

We would like to would like to draw your attention to the first Joint Assembly of the European Geosciences Union (EGU) and the American Geophysical Union (AGU) in Nice, France, on 6-11 April 2003 (http://www.copernicus.org/egsagueug).

We also invite you to submit a contributed abstract to the following special sessions on: Eddy and frontal scale processes in ocean biogeochemistry : observations and models The detailed session description is below. The deadlines are: - Receipt of abstracts: 15 January 2003. - Pre-registration: 7 March 2003.

Limited financial support is available and details can be found at http://www.copernicus.org/EGS/egsga/nice03/support_prog.htm Please note that Conveners can identify any contributed paper they wish as "solicited", which allows for a 30 minute presentation instead of 15 minutes. If you would like to take advantage of that possibility, please let us know and we would be pleased to consider yourrequest.

We look forward to seeing you in Nice in April.

Best regards, Laurent Mémery Dennis McGillicuddy Ric Williams

--- Eddy and frontal scale processes in ocean biogeochemistry : observations and models
Convenors: Laurent Mémery, LODYC, Paris, France
Email : memery@lodyc.jussieu.fr
FAX : (33) 1 44 27 49 66
Dennis McGuillicuddy, WHOI, Woods Hole, USA
Email : dmcgillicuddy@whoi.edu
FAX : (1) 508-457-2194
Richard G. Williams, University of Liverpool, Liverpool, U.K.
Email : ric@liverpool.ac.uk
Fax : (44) 151 794 4099
Theoretical, observational and modelling studies suggest that ocean eddy and frontal scales provide an important contribution to biogeochemical fluxes, both in terms of the temporal variability and time-averaged response. The enhanced fine-scale response is principally associated with instability of the flow and frontal dynamics, which through ageostrophic dynamics modify the vertical transport of tracers. These vertical movements can generate localized "fertilization" and enhanced primary production, as well as increased export of organic matter by subduction and particle sedimentation. The two major issues addressed in this session are 1. Understanding the fundamental processes driving frontal and mesoscale variability, and 2. Quantification of its impact on a regional and global scale, in terms of the distribution of oceanic tracers and the major biogeochemical fluxes (new and export productions). Contributions are welcomed involving analysis of eddy and frontal signals in biogeochemistry using satellite observations (e.g. SeaWIFS), in situ data with automated and high frequency devices (e.g. POMME programme and tracer-release studies), high resolution coupled biogeochemical models and theoretical studies. ======================================================
Laurent Mémery
Laboratoire d'Océanographie Dynamique et de Climatologie (LODYC)
Institut Pierre Simon Laplace (IPSL)
UMR 7617 CNRS/IRD/UPMC
Université Pierre et Marie Curie, Case 100
4 Place Jussieu
75252 Paris Cedex 5 France
tel: 01 44 27 49 66 - international 33 1 44 27 49 66
fax: 01 44 27 71 59 - international 33 1 44 27 71 59
email: lm@lodyc.jussieu.fr ; lmlod@ipsl.jussieu.fr ======================================================

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