cc: ricardo@lab.cricyt.edu.ar,Eystein Jansen ,jto@u.arizona.edu,Tim Osborn date: Thu Jun 16 09:58:11 2005 from: Keith Briffa subject: Re: Fwd: NH Borehole Timeseries to: hpollack@umich.edu Henry thanks for this . There will be problems reducing the overall text and in so doing trying to avoid too simplistic/stark statements , or making implications that were not intended. The borehole section is too technical and long and will have to be shortened, perhaps(?) with some text moved to a "Supplementary Section" still not decided. The problem is that the proportional allotment of space re. multi-proxies, GST, simulations, (and especially the regional section (which should /might contain SH temperatures and , large scale precip. - necessarily very briefly if at all) will have to be thrashed out but ultimately decided by Peck and Eystein - obviously with interaction with all of us. Hence , we need your input and I will send the text as it is soon. Ricardo is still working on the last (Regional section) and we are struggling here to get the Figures the way we want them. Can I ask if there is an equivalent SH GST curve as for the north - we were considering (though are now not likely ) to show one - but wanted to know anyway. Thanks Keith At 14:32 15/06/2005, you wrote: FYI Date: Mon, 13 Jun 2005 13:53:37 -0400 From: Henry Pollack To: Tim Osborn Cc: Jason Smerdon Subject: NH Borehole Timeseries User-Agent: Internet Messaging Program (IMP) H3 (4.0.3) X-Remote-Browser: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) X-IMP-Server: 141.211.144.92 X-Originating-IP: 141.211.197.134 X-Originating-User: X-Spam-Score: 2.5 X-Spam-Level: ++ X-Spam-Flag: NO Hi Tim, Attached is the Northern Hemisphere timeseries for the boreholes, an area- weighted average from a five-degree grid. It includes a mean reconstruction and two uncertainty timeseries representing +/- 1 standard error. We have referenced the series to the zero crossing of the NH SAT (total). This is after the Moberg et al. paper in which the crossing year was determined to be 1958.5. That reference for the SAT data is: Jones, P.D. and A. Moberg, Hemispheric and large-scale surface air temperature variations: An extensive revision and an update to 2001. J. Clim. 16, 206223 (2003). The reference for the borehole reconstruction is Pollack & Smerdon (2004). If you and Keith are using another subset (land only?) or version of the SAT data please send us the year of the zero-crossing of the 20th-century SAT trend in the dataset you are using. We can reference from there accordingly. Let me or Jason know if you have any questions. I am leaving for Australia next week and Jason is also traveling a little, so please let us know ASAP if you need something different. Cheers, Henry Dr Timothy J Osborn Climatic Research Unit School of Environmental Sciences, University of East Anglia Norwich NR4 7TJ, UK e-mail: t.osborn@uea.ac.uk phone: +44 1603 592089 fax: +44 1603 507784 web: [1]http://www.cru.uea.ac.uk/~timo/ sunclock: [2]http://www.cru.uea.ac.uk/~timo/sunclock.htm -- Professor Keith Briffa, Climatic Research Unit University of East Anglia Norwich, NR4 7TJ, U.K. Phone: +44-1603-593909 Fax: +44-1603-507784 [3]http://www.cru.uea.ac.uk/cru/people/briffa/