co-sponsors EPRI, NSF, NOAA, PAGES and CLIVAR
9 June 2008 at 08:30
11 June 2008
Trieste - Italy
AGH (Kastler Lecture Hall)
Directors: K. Cobb, T. Kiefer, J. Lough, J. Overpeck, S. Tudhope. Local Organizer: F. Kucharski
Reconstructions of climate over the past few millennia using high-resolution climate proxy data provide vital benchmarks against which to test and refine climate models used for future climate prediction. A major opportunity exists to improve the quality and value of these climate reconstructions through a coordinated assessment of uncertainties in these proxies and how best to represent them, combined with development of coordinated strategies for future collection and integration of proxy data from key regions. The workshop will focus on climate proxies that have decadal or better temporal resolution, and their use in climate modeling and reconstruction efforts.
Different types of proxy data share many sources of uncertainty, including reproducibility, chronological control, and differing seasonal sensitivities, but each type of proxy is also associated with its own unique sources of uncertainties. By bringing together representatives of each proxy type to discuss the challenges associated with proxy uncertainties, we will take advantage of cross-cutting themes (how to represent uncertainties to the broader community? what types of data/metadata to supply to data centers?) while challenging each proxy group to devise coherent strategies of representing and reducing errors associated with their particular proxy.
Reliable reconstructions of past climate are significant tools for understanding global climate change. Techniques for reconstructing large-scale climate series and modeling such series have been proven. Such reconstructions and their interpretation can, however, only be as good as the contributing proxy climate data. We now have sufficient understanding of these various climate proxies and their limitations to strategically improve the global proxy climate database. This requires a coordinated international approach if we are to move forward rapidly.
Primary Workshop Goals:
1. Identify the main sources of uncertainty in the different types of proxy data.
2. Make recommendations for how to better represent proxy error to non-specialists.
3. Develop strategies for reducing uncertainties associated with each proxy type.
4. Develop internationally coordinated strategy for re-sampling existing key proxy sites and sampling new key sites for each climate proxy.
Invited international experts in the various climate proxies will be attending the Workshop.
no notes available
14:30-16:00 Breakout groups (mixed proxy groups) 01h30'
15:30-16:00 Coffee available 30'
16:00 Report back to larger group on recommendations (prioritized from most important to least important; 5 minutes per proxy) 01h00'
Charge for breakout group 2: how to reduce uncertainties (and what climate information will we likely gain from doing so?) 30'
17:00 Workshop ends for day
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