- Dendroclimatology
. Limitations Along with the advantages of dendroclimatology are some limitations confounding variable ... record. Then one is justified in extending the dendroclimatology inferences to areas ... posited global warming from man made CO sub 2 sub , has moved dendroclimatology from a sleepy ... around global warming. Dendroclimatology is a young science&mdash improvements in methods are being ... . Hughes M.K., Swetman T.W., Diaz H. Editors 2009 , Dendroclimatology Springer . ISBN 978 1 4020 4010 8 Luckman B.H. 2007 , Dendroclimatology , Encyclopedia of Quaternary Science editor&mdash Elias ... more details
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- 14th century in North American history
Unreferenced date December 2007 div style clear both div class infobox style background color f0f0f0 align right small Centuries small align center 13th century in North American history 13th century 14th century 15th century in North American history 15th century The 14th century in North American history provides a timeline of events occurring within the North American continent from 1301 to 1400 CE in the Gregorian calendar . This time period from 1000 BCE present is known as the Post archaic period Post archaic stage . Although this timeline segment may include some European or other world events that profoundly influenced later American life, it focuses on developments within Indigenous peoples of the Americas Native American communities. The archaeological records supplements indigenous recorded and oral history . Because of the inaccuracies inherent in radiocarbon dating and in interpreting other elements of the archaeological record, most dates in this timeline represent approximations that may vary a century or more from source to source. The assumptions implicit in archaeological dating methods may also yield a general bias in the dating in this timeline. List of events 1200 1400 Middle Mississippian culture in the Eastern Woodlands The Little Ice Age brought a period of severe decline to medieval Europe, causing the Great Famine of 1315 1317 Great Famine . The 14th century in America probably also brought decline of the Mississippian culture , especially in the northern states. Dendroclimatology suggests that severe droughts ravaged the American Southwest and especially the Southern Plains early in the period, leading to a rapid cultural decline. Athapaskan speaking people continue to migrate southward from the Canadian prairies toward the American Southwest . See also Mississippian culture List of archaeological periods North America Notes reflist Pre Columbian Category 14th century in North America North American history Category Timelines of North Amer ... more details
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- Keith Briffa
notability Academics date October 2010 Professor Keith R. Briffa born 1952 is a climatologist employed since 1977 by the Climatic Research Unit at the University of East Anglia , of which he is currently deputy director. ref http www.cru.uea.ac.uk cru people ref In his professional work, he focuses on the climate change in late Holocene , with a special focus on northern portions of Europe and Asia . Briffa s preferred method is dendroclimatology , which is a set of procedures intended to decode information about the past climate from dendrology tree rings . Briffa helped develop data sets from trees from Canada, Fennoscandia, and northern Siberia which have been used in climate research. ref http www.uea.ac.uk env people facstaff briffak ref Selected publications cite journal title The spatial extent of 20th century warmth in the context of the past 1200 years author Osborn T.J. and K.R. Briffa year 2006 journal Science journal Science volume 311 issue 5762 pages 841 4 doi 10.1126 science.1120514 pmid 16469924 bibcode 2006Sci...311..841O cite journal doi 10.1098 rstb.2007.2199 journal Philosophical Transactions of the Royal Society B Biological Sciences Phil. Trans. R. Soc. B year 2008 volume 363 pages 2269 82 title Trends in recent temperature and radial tree growth spanning 2000 years across northwest Eurasia author Briffa K.R., et al. pmid 18048299 issue 1501 pmc 2606779 cite journal journal Nature journal Nature volume 376 pages 156 9 year 2002 doi 10.1038 376156a0 title Unusual twentieth century summer warmth in a 1,000 year temperature record from Siberia author Briffa K.R., et al. issue 6536 bibcode 1995Natur.376..156B cite journal journal Journal of Geophysical Research volume 106 D3 pages 2929 2941 year 2001 title Low frequency temperature variations from a northern tree ring density network author Briffa K.R., et al. url http www.cru.uea.ac.uk cru people briffa jgr2001 Briffa2001.pdf bibcode 2001JGR...106.2929B doi 10.1029 2000JD900617 cite jour ... more details
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- Acanthochronology
is relatively new. Acanthochronology is closely related to dendrochronology , dendroclimatology ... more details
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- Mount Graham
D. Grissino Mayer and Harold C. Fritts, Dendroclimatology and Dendroecology in the Pinale o Mountains ... more details
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- Rhythmite
2009 ref See also Varve Dendrochronology Dendroclimatology Touchet Formation References reflist ... more details
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- Divergence problem
File Briffa tree ring density vs temperature 1880 2000.jpg thumb right 300px Twenty year smoothed plots of averaged ring width dashed and tree ring density thick line , averaged across all sites, and shown as standardized anomalies from a common base 1881 1940 , and compared with equivalent area averages of mean April September temperature anomalies thin solid line . From Keith Briffa Briffa 1998 ref Briffa K., Trees tell of past climates but are they speaking less clearly today? , Proceedings of the Royal Society , 1998 ref . The divergence problem is an anomaly from the field of dendroclimatology , the study of past climate through observations of old trees, primarily the properties of their annual growth rings. It is the disagreement between the temperatures measured by the thermometer s Instrumental temperature record instrumental temperatures and the temperatures reconstructed from the widths of tree rings in the far northern forests. While the thermometer records indicate a substantial warming trend, many tree rings do not display a corresponding change in their width. ref name Darrigo cite journal last D Arrigo first Rosanne last2 Wilson first2 Rob last3 Liepert first3 Beate last4 Cherubini first4 Paolo title On the Divergence Problem in Northern Forests A review of the tree ring evidence and possible causes journal Global and Planetary Change volume 60 pages 289 305 publisher Elsevier year 2008 url http www.ldeo.columbia.edu liepert pdf DArrigo etal.pdf doi 10.1016 j.gloplacha.2007.03.004 accessdate ref A temperature trend extracted from tree rings alone would not show any substantial warming. The temperature graphs calculated in these two ways thus diverge from one another since the 1950s, which is the origin of the term. Samples from southern forests do not exhibit this divergence, though this could be due to paucity of samples, and not all trees in the northern hemisphere do. Divergence is most common in the far northern hemisphere. Importance The deviati ... more details
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- Temperature record of the past 1000 years
proxy methods. One such method, based on principles of dendroclimatology , uses the width and other ... since 1880 CLIWOC Climatological database for the world s oceans Dendroclimatology Table of historic ... more details
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- Varve
2007 04 27 ref See also Dendrochronology Dendroclimatology Rhythmite References reflist More ... more details
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- Sukachev Institute of Forest
, microbiology, physiology and biochemistry of wood plants, dendrology and dendroclimatology and other ... more details
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- Index of climate change articles
enhancement Coal phase out Contrail Cool roof Cool tropics paradox Coral bleaching D Dendroclimatology ... more details
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- Proxy (climate)
of a tree. main Dendroclimatology Dendroclimatology is the science of determining past climates ... more details
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- Temperature record
climatological database for the world s oceans Temperature record of the past 1000 years Dendroclimatology ... more details
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- Bernard Price Institute for Palaeontological Research
Assemblage Zone of the Beaufort Group Dendroclimatology of the Karoo Basin Taxonomic and taphonomic ... more details
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- Plant stem
objects and associated artifacts. Dendroclimatology is the use of tree rings as a record of past ... more details
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- Paleoclimatology
. Dendroclimatology Climatic information can be obtained through an understanding of changes in tree ... temperatures Paleotempestology , the study of past tropical cyclone activity Dendroclimatology ... more details
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- Dendrochronology
Dendroclimatology Dendroarchaeology Dendrology Paleoclimatology Post excavation Varve Timeline of dendrochronology ... more details
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- Climatic Research Unit
climate over the last 10,000 years based upon dendroclimatology tree ring data and a study of European ... more details
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- Climate change
soil moisture has been perceived. ref name USGS watercycletrend Dendroclimatology Dendroclimatology ... book title Dendroclimatology progress and prospect year 2010 publisher Springer location New York ... more details
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- Index of meteorology articles
in the atmosphere Darrieus wind turbine dawn dBZ meteorology degree temperature deicing dendroclimatology ... more details
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- Ulmus americana
old. Herbie s wood is of interest to Dendroclimatology dendroclimatologist s, who will use cross ... more details
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- Climate change in Australia
like dendroclimatology tree ring data cannot be used in Australia owing to the character of its soils ... more details
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- List of Greek words with English derivatives
lang grc dendron lang grc dendr o tree dendrite , dendrochronology , dendroclimatology ... more details
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- Climatic Research Unit email controversy
Use British English date August 2011 Use dmy dates date August 2011 pp move indef Infobox news event image caption The Hubert Lamb Building, which houses the Climatic Research Unit date 17 November 2009 time place Climatic Research Unit , University of East Anglia also known as Climategate first reporter filmed by participants reported property damage inquiries House of Commons Science and Technology Committee UK ref cite book author Secretary of State for Energy and Climate Change url http www.official documents.gov.uk document cm79 7934 7934.pdf title Government Response to the House of Commons Science and Technology 8th Report of Session 2009 10 The disclosure of climate data from the Climatic Research Unit at the University of East Anglia publisher The Stationery Office isbn 9780101793421 ref br Independent Climate Change Review UK br International Science Assessment Panel UK br Pennsylvania State University US United States Environmental Protection Agency US br Department of Commerce US verdict Exoneration or withdrawal of all major or serious charges One of the FOIA charges was withdrawn, rather than being resolved The Climatic Research Unit email controversy also known as Climategate ref Chameides, Bill. https www.scientificamerican.com article.cfm?id climategate redux Climategate Redux . Scientific American , 30 Aug. 2010. Retrieved 17 Aug. 2011. ref ref http www.nature.com nature journal v468 n7322 full 468345a.html Closing the Climategate . Nature . 18 Nov 2010. Retrieved 17 Aug. 2011. ref began in November 2009 with the hack computer security hack ing of a server at the Climatic Research Unit CRU at the University of East Anglia UEA . ref Pooley 2010, p. 425 Climategate broke in November, when a cache of e mails was hacked from a server at the Climatic Research Unit CRU of the University of East Anglia in Norwich, England. See Pooley, Eric 2010 . The Climate War True Believers, Power Brokers, and the Fight to Save the Earth . Hyperion Books. ISBN 14013232 ... more details
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