Persistent Link:
http://hdl.handle.net/10150/304606
Title:
Tree-Ring Evidence for Climatic Changes in Western North America
Author:
Fritts, Harold C.
Affiliation:
Laboratory of Tree-Ring Research, University of Arizona
Publisher:
American Meteorological Society (Boston, MA)
Issue Date:
Jul-1965
Description:
Reprinted from: Monthly Weather Review, Vo. 93, No. 7, Pp. 421 to 443, 1965
URI:
http://hdl.handle.net/10150/304606
Abstract:
The relationships between climatic factors and fluctuations in dated tree-ring widths are statistically evaluated. A wide ring indicates that the year's climate was moist and cool, and a narrow ring dry and warm. In general, ring width relates to a 14-month period from June through July but most tree-ring chronologies exhibit a closer relationship with autumn, winter, and spring moisture than with summer moisture. The climatic relationships for evergreen trees are attributed largely to the influence of environmental factors on photosynthesis and the accumulation of food reserves. Under abnormally dry and warm conditions, especially during the autumn, winter, and spring, little food is accumulated, new cells are formed more slowly during the growing period, and the resulting ring is narrow. Relative 10 -yr. departures are calculated for the entire length of 26 tree -ring chronologies from western North America. Those portions after 1500 are used to map areas of high and low moisture. Periods of widespread drought are noted in 1576-1590, 1626-1635, 1776-1785,1841-1850, 1871-1880, 1931-1940. Periods of widespread and above average moisture occurred during 1611-1625,1641-1650, 1741-1755, 1826-1840, 1906-1920. The moist periods of 1611-1625, and 1906-1920 were most widespread and markedly above average.
Type:
Article; text
Language:
en_US
Keywords:
Dendrochronology -- North America.; Tree-rings.

Full metadata record

DC FieldValue Language
dc.contributor.authorFritts, Harold C.en_US
dc.date.accessioned2013-10-24T15:08:03Z-
dc.date.available2013-10-24T15:08:03Z-
dc.date.issued1965-07-
dc.identifier.urihttp://hdl.handle.net/10150/304606-
dc.descriptionReprinted from: Monthly Weather Review, Vo. 93, No. 7, Pp. 421 to 443, 1965en_US
dc.description.abstractThe relationships between climatic factors and fluctuations in dated tree-ring widths are statistically evaluated. A wide ring indicates that the year's climate was moist and cool, and a narrow ring dry and warm. In general, ring width relates to a 14-month period from June through July but most tree-ring chronologies exhibit a closer relationship with autumn, winter, and spring moisture than with summer moisture. The climatic relationships for evergreen trees are attributed largely to the influence of environmental factors on photosynthesis and the accumulation of food reserves. Under abnormally dry and warm conditions, especially during the autumn, winter, and spring, little food is accumulated, new cells are formed more slowly during the growing period, and the resulting ring is narrow. Relative 10 -yr. departures are calculated for the entire length of 26 tree -ring chronologies from western North America. Those portions after 1500 are used to map areas of high and low moisture. Periods of widespread drought are noted in 1576-1590, 1626-1635, 1776-1785,1841-1850, 1871-1880, 1931-1940. Periods of widespread and above average moisture occurred during 1611-1625,1641-1650, 1741-1755, 1826-1840, 1906-1920. The moist periods of 1611-1625, and 1906-1920 were most widespread and markedly above average.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Society (Boston, MA)en_US
dc.rightsCopyright © Arizona Board of Regents. The University of Arizona.en_US
dc.sourceLaboratory of Tree-Ring Research Archives. The University of Arizona.en_US
dc.subjectDendrochronology -- North America.en_US
dc.subjectTree-rings.en_US
dc.titleTree-Ring Evidence for Climatic Changes in Western North Americaen_US
dc.typeArticleen_US
dc.typetexten_US
dc.contributor.departmentLaboratory of Tree-Ring Research, University of Arizonaen_US
dc.description.collectioninformationThis item is part of the Natural History Reports collection. It was digitized from a physical copy provided by the Laboratory of Tree-Ring Research at The University of Arizona. For more information about items in this collection, please contact the Lab's Curator, (520) 621-1608 or see http://ltrr.arizona.edu/collection.en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.