date: Wed May 22 09:12:55 2002 from: Tim Osborn subject: Re: 2002GL015404 Request to Review from Geophysical Research to: JPanning@agu.org Dear Saburo Miyahara, I am willing to review this manuscript, but will be away on holiday for the next 3 weeks and thus wouldn't be able to return my review until mid-June or soon after. If that's adequate then let me know and I'll click on "accept"; if it's not then please find another reviewer (Prof. Phil Jones, p.jones@uea.ac.uk, is suitable as he has done some v. closely related work, but he is away for the next 1 to 2 weeks too). Regards Tim At 14:31 21/05/02, you wrote: Dear Dr. Osborn: Would you be willing and available to review "Are temperature-sensitive proxies adequate for North Atlantic Oscillation reconstructions?" by Eduardo Zorita, Eduardo Zorita, Fidel Gonzalez-Rouco, submitted for possible publication in the Geophysical Research Letters. The manuscript's abstract is: Recent reconstructions of the North Atlantic Oscillation Index(NAOI) for the last few centuries are mostly based on statistical models linking this index with proxy records. The underlying assumption is that the statistical relationship between the NAO and the indicators are stable in time and independent of time scale. This assumption might not be physically substantiated, since at time scales of centuries, other processes, such as solar variability, might disturb the link between the NAOI and temperature-sensitive proxy indicators. The statistical approach for NAOI reconstructions was tested using a climate simulation with a state-of-the art climate model driven by external forcing of the last 490 years as a surrogate for the real climate. Two kinds of indicators were tested, temperature-sensitive and precipitation sensitive. It was found that, in this surrogate climate, the NAOI reconstructions based on precipitation-sensitive proxies are more reliable than the reconstructions based on temperature-sensitive proxies. If you agree to review this manuscript, I would ask for your comments within 14 days from your acceptance. To ACCEPT, click on the link below: [1]http://grl-submit.agu.org/cgi-bin/main.plex?pra=39935-0-joedziuyVQMwc-101469-10 If you are unable to review this manuscript at this time, I would appreciate any suggestions of other potential reviewers who would be qualified to examine this manuscript. (Via reply e-mail.) To DECLINE, click on the link below: [2]http://grl-submit.agu.org/cgi-bin/main.plex?prd=39935-0-joedziuyVQMwc-101469-10 If you have any questions or need more information feel free to reply to this e-mail. Thank you for your consideration and support of Geophysical Research Letters. Sincerely, Saburo Miyahara Associate Editor Geophysical Research Letters