(AGU) American Geophysical Union Annual Meeting

December 13-17, 2004, San Francisco, CA

Topical session (PP01)
GeoSystems: Deep-Time-Paleoclimatology and Linked Earth Systems Through Time.

This session is organized by Isabel Montanez, Howard Spero, and Lynn Soreghan and is co-sponsored by the Paleoceanography and Paleoclimatology, Biogeosciences, and Ocean Sciences divisions of AGU.

Session Description:

The theme GeoSystems reflects an interest in deep-time paleoclimate reconstructions that document past states of climate and linked systems far more extreme than those archived in instrumental, historical, or even Quaternary records, but potentially repeatable on human time scales. We are soliciting papers that highlight well-documented examples of past "alternative Earths" and the insight gained towards defining the full range and rates of potential variability in our planet's climate system, and the mechanistic links between processes that define the 'cause and effects' of these extremes in global systems behavior.
Presentations on computation-based paleoclimate modeling and data-based paleoclimate reconstruction in particular are solicited, with a focus for the latter on novel paleoclimate proxies and data bases collected at time scales applicable to paleoclimate modeling. Presentations that address ecosystem-climate relationships and coupled terrestrial-marine proxy records are also strongly encouraged.

Topical session (PP04)
Antarctic Climate, Neogene Proxies and Climate Modeling

This session is being organized by Alan Haywood, John Smellie, Paul Valdes, Bruce Sellwood and is co-sponsored by the Paleoceanography and Paleoclimatology, Global Climate Change, Ocean and Atmospheric Science divisions of AGU.

Session Description:

Scenarios for future climate change indicate that within the next 100 to 400 years, global annual average surface temperatures will increase by several degrees. The Neogene represents the last time in Earth history when comparable warming occurred. The nature and stability of the Neogene Antarctic ice-sheet is surrounded in controversy yet the issue is vitally important to our understanding of how the present global atmosphere—ocean—earth—cryosphere system was established, and how it may react to future warming.
This session will address Antarctic and global proxy records of Neogene climate and environmental change. The aim of the session is to synthesize results from marine and terrestrial proxy data for the Miocene and Pliocene and to combine them with outputs derived from numerical climate and ice-sheet models. Submissions that cover a broad spectrum of proxy reconstructions of Antarctic and global Neogene climate and environmental change over a range of time scales, and/or investigate uncertainties inherent in such proxy methods will be welcomed. We particularly encourage studies that demonstrate (a) synergy between new data generation/data synthesis and paleoclimate modeling or (b) introduce new paleoenvironmental proxies or improve established methods.

GeoSystems Workshop September 9-11, 2004

Arlington, VA

Agenda and Workshop Report

A followup workshop to the original Deep-time Paleoclimate workshop. A key goal of the upcoming workshop will
be the development of a strategic plan for accelerating progress in deep-time paleoclimatology.