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Poptech · 25-04-2008, 11:56 PM

The Medieval Warming Period and Little Ice Age were Global:

20th Century Climate Not So Hot (Harvard-Smithsonian Center for Astrophysics)
Greenland's Ice Yields Further Clues About Climate Change (Science Daily)
Marshes Tell Story Of Medieval Drought, Little Ice Age, And European Settlers Near NYC (Science Daily)
Middle Ages Were Warmer Than Today, Say Scientists (The Daily Telegraph, UK)
Medieval Warm Period, Little Ice Age and 20th Century Temperature Variability from Chesapeake Bay (USGS)
Tree Ring Evidence For A Medieval Warm Period In Columbia Bay, Alaska (The Geological Society of America)
Tree Rings Show a Period of Widespread Warming in Medieval Age (The New York Times)
Tree Rings show Earth was warm 800 years ago (USA Today)
Warmer Periods In Alaskan Area Not Confined To Modern Times (Science Daily)

A 700 year record of Southern Hemisphere extratropical climate variability
(Annals of Glaciology, vol. 39, p.127-132, 2004)
- P.A Mayewski, K. Maasch, J.W.C White, E.J. Steig, E. Meyerson, I. Goodwin, V.I. Morgan, T. van Ommen, M.A.J. Curran, J. Sourney, K. Kreutz

Coherent High- and Low-Latitude Climate Variability During the Holocene Warm Period
(Science, Vol. 288. no. 5474, pp. 2198 - 2202, 23 June 2000)
- Peter deMenocal, Joseph Ortiz, Tom Guilderson, Michael Sarnthein

Evidence for a 'Medieval Warm Period' in a 1,100 year tree-ring reconstruction of past austral summer temperatures in New Zealand
(Geophysical Research Letters. Vol. 29, no. 14, pp. 12-1 to 12-4. 15 July 2002)
- E. R. Cook, J. G. Palmer, R. D'Arrigo

Evidence for the existence of the medieval warm period in China
(Climatic Change, Volume 26, Numbers 2-3, March, 1994)
- De'Er Zhang

Glacial geological evidence for the medieval warm period
(Climatic Change, Volume 26, Numbers 2-3, March, 1994)
- Jean M. Grove, Roy Switsur

Late Holocene surface ocean conditions of the Norwegian Sea (Vøring Plateau)
(Paleooceanography, Vol. 18, No. 2, 1044, 2003)
- Carin Andersson, Bjørg Risebrobakken, Eystein Jansen, Svein Olaf Dahl

Low-Frequency Signals in Long Tree-Ring Chronologies for Reconstructing Past Temperature Variability
(Science, Vol. 295. no. 5563, pp. 2250 - 2253, 22 March 2002)
- Jan Esper, Edward R. Cook, Fritz H. Schweingruber

Medieval climate warming and aridity as indicated by multiproxy evidence from the Kola Peninsula, Russia
(Palaeogeography, Palaeoclimatology, Palaeoecology, Volume 209, Issues 1-4, Pages 113-125, 6 July 2004)
- K. V. Kremenetski, T. Boettger, G. M. MacDonald, T. Vaschalova, L. Sulerzhitsky, A. Hiller

Medieval Warm Period, Little Ice Age and 20th century temperature variability from Chesapeake Bay
(Global and Planetary Change, Volume 36, Issues 1-2, March 2003, Pages 17-29)
- T. M. Cronin, G. S. Dwyer, T. Kamiya, S. Schwede, D. A. Willard

Reconstructing Climatic and Environmental Changes of the Past 1000 Years: A Reappraisal
(Energy and Environment, Vol. 14, Issues 2 & 3, April 11, 2003)
- Willie Soon, Sallie Baliunas, Sherwood B. Idso, Craig Idso, David R. Legates

Quote:

Many records reveal that the 20th century is likely not the warmest nor a uniquely extreme climatic period of the last millennium.

The Little Ice Age and Medieval Warm Period in the Sargasso Sea
(Science, Vol. 274. no. 5292, pp. 1503 - 1508, 29 November 1996)
- Lloyd D. Keigwin

The Little Ice Age and Medieval Warming in South Africa
(South African Journal of Science 96: 121-126, 2000)
- P. D. Tyson, W. Karlén, K. Holmgren and G. A. Heiss

The 'Mediaeval Warm Period' drought recorded in Lake Huguangyan, tropical South China
(Holocene, Vol. 12, no. 5, pp. 511-516, 2002)
- Guoqiang Chu, Jiaqi Liu, Qing Sun, Houyuan Lu, Zhaoyan Gu, Wenyuan Wang, Tungsheng Liu

The Medieval Warm Period in the Daihai Area
(Journal of Lake Sciences, Vol. 14, no. 3, pp. 209-216, Sep 2002)
- Z. Jin, J. Shen, S. Wang, E. Zhang

Torneträsk tree-ring width and density ad 500–2004: a test of climatic sensitivity and a new 1500-year reconstruction of north Fennoscandian summers
(Climate Dynamics, January, 2008)
- Håkan Grudd

Tree-ring and glacial evidence for the medieval warm epoch and the little ice age in southern South America
(Climatic Change, Volume 26, Numbers 2-3, March, 1994)
- Ricardo Villalba

Was the Medieval Warm Period Global?
(Science, Vol. 291. no. 5508, pp. 1497 - 1499, 23 February 2001)
- Wallace S. Broecker

Quote:

The Little Ice Age and the subsequent warming were global in extent. Several Holocene fluctuations in snowline, comparable in magnitude to that of the post-Little Ice Age warming, occurred in the Swiss Alps. Borehole records both in polar ice and in wells from all continents suggest the existence of a Medieval Warm Period. Finally, two multidecade-duration droughts plagued the western United States during the latter part of the Medieval Warm Period. I consider this evidence sufficiently convincing to merit an intensification of studies aimed at elucidating Holocene climate fluctuations, upon which the warming due to greenhouse gases is superimposed.