cc: t.osborn@uea.ac.uk, k.briffa@uea.ac.uk
date: Fri, 10 Feb 2006 21:42:15 -0000 (GMT)
from: "Tim Osborn" <t.osborn@uea.ac.uk>
subject: Re: Osborn and Briffa 2006 NH temp. data archived
to: "Bruce Bauer" <Bruce.A.Bauer@noaa.gov>

Brilliant, thanks Bruce.

Tim

On Fri, February 10, 2006 4:28 pm, Bruce Bauer wrote:
> Hi Tim,
> The data from your Science paper is now available from the WDC Paleo
> website. Hopefully the few-hour delay after publication won't cause too
> much of an uproar!! :)
>
> I put all the series in a single text file, with our standard
> documentation header, which is copied below for your inspection. As I
> mentioned earlier, the paper is featured in our What's New section:
> http://www.ncdc.noaa.gov/paleo/whatsnew.html and
> http://www.ncdc.noaa.gov/paleo/pubs/osborn2006/osborn2006.html
> as well as the Climate Reconstructions web page:
> http://www.ncdc.noaa.gov/paleo/recons.html
> Please let me know if you have suggestions for improvement to any of
> these. I will be out of the office next week, but can do updates upon my
> return.
> Thanks very much for contributing the data!
> Cheers, Bruce
>
> Tim Osborn wrote:
>
>> That's great, Bruce. Looking forward to seeing it later today (already
>> sceptics have been complaining that I haven't archived the data!).
>>
>> Cheers
>>
>> Tim
>>
>> At 00:17 08/02/2006, Bruce Bauer wrote:
>>
>>> Dear Tim,
>>> Congratulations on your upcoming Science paper, and thanks very much
>>> for contributing the data. You have provided everything I need,
>>> except a few details I will obtain from Science online when the paper
>>> is posted. If we have no technical glitches, the data should be
>>> available via our "Whats New" web page friday morning in the US,
>>> friday afternoon in Norwich. The web address is:
>>> http://www.ncdc.noaa.gov/paleo/whatsnew.html
>>> I'll let you know when it is all set!
>>> Thanks, Bruce
>>>
>>>
>>> Tim Osborn wrote:
>>>
>>>> Dear Connie / WDC-Paleo,
>>>>
>>>> Together with Keith Briffa, I have a paper that is being published
>>>> in Science next week (10-Feb-2006) about Northern Hemisphere
>>>> temperature variations over the last 1200 years.
>>>>
>>>> We would like to provide the data to WDC-Paleo so that it can be
>>>> made available for people to download once the paper is published.
>>>>
>>>> I wasn't entirely sure what information you required, because it is
>>>> a mixture of individual records that already exist (which we have
>>>> used for our analysis) plus the results of our analysis itself,
>>>> which is various dimensionless indicators of the relative spatial
>>>> extent of warm or cold conditions.
>>>>
>>>> I have attached some ASCII files:
>>>>
>>>> wdc_paleo_osborn2006_header.txt contains a description of the data
>>>> etc.
>>>>
>>>> osborn2006_fig 1,2,3A-C,3D .dat each contain the data shown in a
>>>> particular figure of our paper.
>>>>
>>>> Science have a strict embargo on our paper until next Thursday
>>>> afternoon (9-Feb-06), but I can provide a copy of the manuscript
>>>> page proofs if you need to see the paper, provided it isn't
>>>> forwarded to anyone else.
>>>>
>>>> Please let me know what else you need (e.g. one of the figures from
>>>> our paper) and whether/when this can all go ahead.
>>>>
>>>> Best regards
>>>>
>>>> Tim
>>>
> Spatial Extent of Warm and Cold Conditions over the Northern Hemisphere
> Since 800 AD
> -----------------------------------------------------------------------
> World Data Center for Paleoclimatology, Boulder
> and
> NOAA Paleoclimatology Program
> -----------------------------------------------------------------------
> NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!!
>
>
> NAME OF DATA SET:
> Spatial Extent of Warm and Cold Conditions over the Northern Hemisphere
> Since 800 AD
> LAST UPDATE: 2/2006 (Original receipt by WDC Paleo)
>
> CONTRIBUTORS: Tim Osborn and Keith Briffa
> Climatic Research Unit, School of Environmental Sciences,
> University of East Anglia, Norwich, UK
>
> IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-009
>
> SUGGESTED DATA CITATION: Osborn, T.J. and K.R. Briffa. 2006.
> Spatial Extent of Warm and Cold Conditions over the Northern Hemisphere
> Since 800 AD.
> IGBP PAGES/World Data Center for Paleoclimatology
> Data Contribution Series # 2006-009.
> NOAA/NCDC Paleoclimatology Program, Boulder CO, USA.
>
> ORIGINAL REFERENCE:
> Osborn, T.J. and K.R. Briffa. 2006.
> The spatial extent of 20th century warmth in the context of the past
> 1200 years.
> Science, Vol 311, Issue 5762, 10 February 2006.
>
>
> ABSTRACT:
> Periods of widespread warmth or cold are identified by positive or
> negative
> deviations that are synchronous across a number of temperature-sensitive
> proxy records drawn from the Northern Hemisphere. The most significant and
> longest duration feature during the last 1200 years is the geographical
> extent of warmth in the middle to late 20th century. Positive anomalies
> during 890 to 1170 and negative anomalies during 1580 to 1850 are
> consistent
> with the concepts of a Medieval Warm Period and a Little Ice Age,
> but comparison with instrumental temperatures shows the spatial extent of
> recent warmth to be of greater significance than that during the
> medieval period.
>
>
> GEOGRAPHIC REGION: Northern Hemisphere land masses
> PERIOD OF RECORD: 800 - 1995 AD
>
>
> FUNDING SOURCE:
> This analysis was supported by the European Community under research
> contract EVK2-CT2002-00160 SOAP.
>
> DESCRIPTION:
> Four data files are provided, linked directly to the three figures shown
> in the publication.
> The figure captions provide the necessary description of the data.
>
> Fig. 1. The 14 temperature-related proxy records used in this study,
> filtered to remove
> variations on time scales less than 20 years and then normalised to have
> zero mean
> and unit standard deviation during the period from 800 to 1995 [with
> adjustments made
> to the shorter records].
>
> Fig. 2. Fraction of the records available in each year that have
> normalized values > 0, > 1, > 2,
> < 0, < -1, and < -2, with the latter three series multiplied by 1. The
> series are shown from
> 800 to 1995 and have been filtered to remove variations on time scales
> less than 20 years.
>
> Fig. 3A-C & Fig. 3D provided as separate files.
> Fig. 3. Difference between the fraction of the records available in each
> year that have normalized
> values (A) > 0 and < 0, (B) > 1 and < -1, (C) > 2 and < -2, and (D) as
> (A) but using a shorter (1865
> to 1995) reference period for normalization. The difference series are
> shown for 800 to 1995 and have
> been filtered to remove variations on time scales less than 20 years.
> Zero indicates that the number of
> series exceeding the upper threshold equals those with values below the
> lower threshold.
> In (D), results based on annual-mean instrumental temperatures from grid
> boxes throughout the NH (red
> curve) or only in regions close to the proxy records (green curve) are
> shown for 1856 to 2004 (also
> normalized over the period from 1856 to 1995).
>
>
> --
> *******************************************************
> Bruce Bauer, Data Manager
> World Data Center for Paleoclimatology and
> NOAA's National Climatic Data Center, Paleoclimatology Branch
> 325 Broadway, E/CC23, Boulder, CO 80305-3328 USA
> Phone: (303) 497-6280 FAX: (303) 497-6513
> Email: Bruce.A.Bauer@NOAA.gov
> FTP: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/
> Web: http://www.ncdc.noaa.gov/paleo/paleo.html
> ********************************************************
>
>
>




