International CLIVAR Project Office
National Oceanography Centre
European Way
Southampton, SO14 3ZH, UK
Phone: +44-2380 596777
Fax: +44-2380 596204
Email: icpo@noc.soton.ac.uk
CLIVAR/PAGES Working Group
Participants of the CLIVAR/PAGES Workshop on Reducing and Representing Uncertainties in High Resolution Proxy Climate Data
Trieste, Italy 2008
News and Highlights
A multi-author review of late-Holocene palaeoclimatology resulted from a PAGES/CLIVAR meeting that took place in June 2006 (Jones et al., 2009). The paper describes the scientific and methodological basis for the climate reconstructions for the last millennia, which provide baselines for anthropogenic warming and for natural variability. The discussion resulted in a number of recommendations for improving reconstructions, some of which may tap expertise elsewhere in IGBP. Recommendations include improvement of the coverage, quality and diversity of proxy data, to conduct process studies to improve the understanding of what individual proxies respond to, to apply reconstruction techniques that allow reliable quantification of the uncertainties, and to use climate model simulations to guide the choice of reconstruction techniques and future sampling.
The CLIVAR/PAGES Intersection Vision Document 2009 (Summary document)
The document outlines the focus and plans of the CLIVAR/PAGES Intersection Panel for the coming years. It is based on the first version (2004, available here) that was revised at the Panel meeting held in Trieste, June 2008.
Download the workshop report:
Cobb et al. (2008): Representing and Reducing Uncertainties in High Resolution Proxy Climate Data
The primary goals of this workshop were to:
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 key new sites for each climate proxy.
The following proxy-specific White Papers from the workshop 2008 available here:
-Corals - K. Cobb, J. Cole, J. Lough and S. Tudhope
-Documentary - C. Pfister, J. Luterbacher, H. Wanner, D. Wheeler, R. Brazdil, Q. Ge, A. Moberg, S. Grab and M. Rosario del Prieto
-Ice cores - E.J. Steig
-Tree rings - K. Briffa and E. Cook
-Speleothems - D. Fleitmann, P. Treble, F. Cruz Jr, J. Cole and K. Cobb
-Lake sediments
Download the agenda here.
Fourth Session of the CLIVAR/PAGES Working Group - 12 June 2008, Trieste, Italy
Other relevant information
PAGES newsletter - Vol. 16, No. 1 - with a special section on paleoceanography - is now available to download in high or low resolution here.
Book Available Online:
Paleoclimate, Global Change and the Future
Edited by Keith Alverson, Raymond Bradley, Thomas Pedersen
Springer Verlag: Heidelberg, Germany
The complete book is available here.
North Greenland ice core suggests interglacial conditions 123 000 years ago.
EPICA ice core reveals Antartic climate records back to 740 000 years ago.
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