referenced on the 2nd page of the document:
https://www.wmo.int/pages/prog/wcp/wcdmp/documents/913_en.pdf
Front cover: Northern Hemisphere temperatures were reconstructed for the past 1000 years (up to 1999) using palaeoclimatic records (tree rings, corals, ice cores, lake sediments, etc.), along with historical and long instrumental records. The data are shown as 50-year smoothed differences from the 1961–1990 normal.
Uncertainties are greater in the early part of the millennium (see page 4 for further information). For more details, readers are referred to the PAGES newsletter (Vol. 7, No. 1: March 1999, also available at http://www.pages.unibe.ch) and the National Geophysical Data Center
(http://www.ngdc.noaa.gov).
(Sources of data: P.D. Jones, K.R. Briffa and T.J. Osborn, University of East Anglia, UK; M.E. Mann, University of Virginia, USA; R.S. Bradley, University of Massachusetts, USA; M.K. Hughes, University of Arizona, USA; and the Hadley Centre, The Met. Office)
They refer the reader to this document where on page 8 one finds the hiding of the decline by publishing it.
http://www.pages-igbp.org/products/newsletters/nl99_1_prt.pdf
In the immediate future, work will continue on important statistical issues related to the processing and interpretation of all of the various tree-ring collections. Potential anthropogenic influences on recent tree growth will become an increasingly important focus of the work. Increased tree productivity during the 19th and early 20th centuries and post-1950 declines in tree density trends have recently been identified in our data. The extent, detail and implications of these phenomena have yet to be further explored. Chronology confidence and the expression of climate forcing are most strongly expressed on short (annual to century) timescales. New data processing techniques are exploring...
So the only complaint can be the fact the graph does not differentiate between the proxy and thermometer record.
Showing posts with label met office. Show all posts
Showing posts with label met office. Show all posts
2011/02/24
2011/01/15
Piers Corbyn "Fails and Fails again"
From Piers pdf
http://www.weatheraction.com/docs/WANews11No2.pdf
2011 - Another year of weather extremes warns Piers
“Solar-lunar driven major jet stream blocking will continue through January and the whole of 2011 giving more extreme cold and snowy / blizzardy spells in parts of USA, Britain and Europe though January continuing into February and then not the sort of Spring and Summer the warmists want. “The warmists will fail and fail again to predict what is coming and are now writing scripts to deceive the public into believing that cold is warm by showing you “data” which has had 62% of recording station they didn’t like removed (see videos & link below).
On Britain & Europe he said (7 Jan) the mild(er) spell now is “as we forecast and it will end from around 12th Jan”.
15th now what happened to the accuracy, perhaps the moon moved!!!?
From the met office
UK Outlook for Wednesday 19 Jan 2011 to Friday 28 Jan 2011:
The start of this period looks to be relatively settled for much of the UK, with a good deal of dry though rather cloudy weather, but with a risk of overnight frost and fog. More unsettled in the northwest with outbreaks of rain and a risk of gales. Into the weekend and the following week, rather more unsettled conditions are likely more widely across the UK, although amounts of rain in the south should be small. Also, a risk of precipitation turning wintry across more northern and northeastern parts, particularly over high ground, where it is likely to be accompanied by strong winds. Temperatures starting off rather cold, although will recover to near normal, especially in the northwest, before tending to cool off somewhat into the start of next week.
Updated: 1144 on Fri 14 Jan 2011
It'll be interesting to see how this pans out.
http://www.weatheraction.com/docs/WANews11No2.pdf
2011 - Another year of weather extremes warns Piers
“Solar-lunar driven major jet stream blocking will continue through January and the whole of 2011 giving more extreme cold and snowy / blizzardy spells in parts of USA, Britain and Europe though January continuing into February and then not the sort of Spring and Summer the warmists want. “The warmists will fail and fail again to predict what is coming and are now writing scripts to deceive the public into believing that cold is warm by showing you “data” which has had 62% of recording station they didn’t like removed (see videos & link below).
On Britain & Europe he said (7 Jan) the mild(er) spell now is “as we forecast and it will end from around 12th Jan”.
15th now what happened to the accuracy, perhaps the moon moved!!!?
From the met office
UK Outlook for Wednesday 19 Jan 2011 to Friday 28 Jan 2011:
The start of this period looks to be relatively settled for much of the UK, with a good deal of dry though rather cloudy weather, but with a risk of overnight frost and fog. More unsettled in the northwest with outbreaks of rain and a risk of gales. Into the weekend and the following week, rather more unsettled conditions are likely more widely across the UK, although amounts of rain in the south should be small. Also, a risk of precipitation turning wintry across more northern and northeastern parts, particularly over high ground, where it is likely to be accompanied by strong winds. Temperatures starting off rather cold, although will recover to near normal, especially in the northwest, before tending to cool off somewhat into the start of next week.
Updated: 1144 on Fri 14 Jan 2011
It'll be interesting to see how this pans out.
2010/12/23
Probability predictions of Met Office
The met office keeps historical predictions online
http://www.metoffice.gov.uk/science/specialist/seasonal/probability/glob_seas_prob.html
http://www.metoffice.gov.uk/science/specialist/seasonal/probability/glob_seas_prob.html
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