• Circum-Antarctic Paleoclimate from Tree-Ring Analysis: Final Technical Report

      LaMarche, Valmore C., Jr.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1978-01-16)
    • Climate in North-Central China from tree-ring variables

      Hughes, Malcolm K.; Leavitt, Steven W.; Laboratory of Tree-Ring Research, University of Arizona (1993)
    • The Climate of Arizona: Prospects for the Future

      Brazel, Anthony J.; Fritts, Harold C.; Idso, Sherwood B.; Department of Geography, Arizona State University; Laboratory of Tree-Ring Research, University of Arizona; U.S. Water Conservation Laboratory, Phoenix, Arizona (The State Climatologist for Arizona (Tempe, AZ), 1978)
      Introduction: The climate of any region sets the tempo of indigenous life styles and largely dictates the scale and type of economic activity that can be sustained. In Arizona, we are subject to perhaps more climatic restraints than are many other areas, due to the high air temperatures in summer and the rather low yearly rainfall. But, weather is variable; and its sum total -- climate -- is not unchanging either. Thus, in planning the future direction economic activity should take, prospects for changes in climate should be considered. In this paper we attempt to marshal the best evidence available to outline the possibilities for Arizona's future climate. We hope that the information will prove useful to those who must make the difficult decisions that will shape the character of our state in the years to come.
    • Climatic Regimes of the Pacific Sector and Adjacent Continents Since 1600: A Synoptic Description and Comparison of Independent Climate Proxy Records

      Fritts, Harold C.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1987-06)
    • Climatic Variations for North America and the North Pacific Since A.D. 1500 as Identified by Well-Dated Tree Rings, and Applied Research Reconstructing Past Climate of the Northern Hemisphere by Use of Tree Rings (Progress Reports)

      Fritts, Harold C.; Ares, M. C.; Blasing, T. J.; Carter, J. R.; Conkey, L. E.; DeWitt, E.; Lofgren, G. R.; Robinson, W. J.; Sherwood, J. A.; Stevens, D. W.; et al. (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1977)
    • Comments on TRL 63-48

      Ferguson, C. W.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1974-08-20)
    • Concepts and Techniques of Dendrochronology

      Ferguson, C. W.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1970)
    • Conditional Probability of Occurrence for Variations in Climate Based on Widths of Annual Tree Rings in Arizona

      Stockton, Charles W.; Fritts, Harold C.; Laboratory of Tree-Ring Research, University of Arizona; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1968-01-10)
      Modern statistical innovations have been incorporated into several recent analyses of tree -ring growth as related to climate. For example, Fritts (1962) used stepwise multiple regression techniques to study the systematic relationship of ring widths to climatic parameters in the southwestern United States; Bryson and Dutton (1962) have utilized power and cross -power spectral analyses in analyzing tree-ring records for periodicities; Mitchell (1967) applied factorial analysis; and Julian and Fritts (1967) introduced digital filter techniques as a means of appraising the systematic relations of tree growth to climatic variables. None of these studies, however, has attempted to analyze the joint occurrence of specific ring widths with certain climatic types so that probability statements could be made about climate from ring widths. This present study analyzes the joint occurrence of climate and relative width of tree rings for the state of Arizona. Conditional probabilities of occurrence are used to establish quantitative relevance of state -wide tree -ring growth from 1900 through 1957 to recorded climate for 1899 through 1957. The results are then used to make probability estimates of climate for the period 1650 through 1899.
    • Cutoff Lows in the Southwestern United States and Their Effects on the Precipitation of this Region: A Study of Circulation Features that may be Recorded by Tree Rings

      Douglas, Arthur V.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1974-06)
    • Dendrochronological and Paleoecological Evidence for Holocene Climatic Fluctuations in the White Mountains, California

      LaMarche, Valmore C., Jr.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1974-05-20)
      The bristlecone pines are of exceptional interest for studies of past environmental changes and especially of climatic changes. Individual trees of these species attain ages approaching 5000 years, and the wood of dead trees can remain intact for several thousand years more. These characteristics permit the development of very long tree-ring chronologies. Furthermore, ecological and environmental changes are shown by the age structure of the forest and by presence of logs, stumps, and wood remnants in areas that are now unforested. The Great Basin bristlecone pine (Pinus longaeva D. K. Bailey) and the closely related Rocky Mountain bristlecone pine (P. aristata Engelm.) are widely distributed in the high mountains of western United States. However, the largest number of old trees and the greatest climatic sensitivity of ring -width characteristics and of distributional patterns are found at the western limits of the Great Basin species - in the White Mountains of eastern California.
    • Dendrochronology in Mexico

      Bannister, Bryant; Scott, Stuart D.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1964)
    • "Dendrochronology in Northern Mexico" Final Technical Report

      Stokes, Marvin A.; Laboratory of Tree-Ring Research, University of Arizona (1978-01)
    • Dendrochronology of Bristlecone Pine

      Ferguson, C. W.; Graybill, D. A.; Laboratory of Tree-Ring Research, University of Arizona (1985-05-31)
      Since Edmund Schulman’s initial interest in 1953, the Laboratory of Tree-Ring Research has conducted dendrochronological studies of bristlecone pine (Pinus longaeva D. K. Bailey, sp. Nov.) in the White Mountains of east-central California where living trees reach ages in excess of 4,000 years. The focus of this report relates to the support by the Geology and Anthropology sections in the National Science Foundation under grant EAR-8018687 for the period 1 April 1981 to 31 October 1984 with the assistance of the Department of Energy contract no. DE-AC02-81EV10680 covering the period 1 May 1981 to 31 October 1982. A summary of this research was recently published in Radiocarbon (Ferguson and Graybill 1983). In most cases various facets of the work were related to projects sponsored by all agencies. Therefore the full range of activities during that period is described herein. The primary project goals were: To extend the bristlecone pine chronology from the White Mountains of California beyond 6700 B.C. and strengthen it by incorporating additional specimens. To develop bristlecone pine chronologies in new areas for applications in archaeology, isotopic studies, and other earth sciences. To furnish dendrochronologically dated wood to researchers engaged in the study of past variations in carbon isotopes and climate.
    • Dendrochronology of Bristlecone Pine

      Ferguson, C. W.; Graybill, D. A.; Laboratory of Tree-Ring Research, University of Arizona (1981-10-31)
    • Dendrochronology of Bristlecone Pine in East-Central Nevada

      Ferguson, C.W.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1970-06-30)
      In the Administrative Study Plan, as set forth 10 August 1966 and approved 16 August 1966, it was proposed that a joint inventory and dendrochronological study of bristlecone pine, Pinus aristata Engelm., be conducted by the Forest Service and the University of Arizona on the Snake, Mt. Moriah, Ward Mountain, and the Schell Creek divisions of the Humboldt National Forest in Nevada. Through a closely integrated inventory and dendrochronological program designed to take full advantage of the unique scientific resources available at the University of Arizona, the proposed study was expected to yield maximum information on the age, volume, growth, extent, and area of bristlecone pine and to provide authoritative data for interpretive and future planning uses. Dr. J. O. Klemmedson of the Department of Watershed Management, for the inventory phase, and Dr. C. W. Ferguson of the Laboratory of Tree -Ring Research, for the dendrochronological phase, were co- investigators of the project.
    • Dendrochronology of Bristlecone Pine Prior to 4000 B.C.

      Ferguson, C. W.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1972-10)
      A 7104 -year tree -ring chronology for bristlecone pine was published in tabular form in 1969. Since then, the chronology has been improved in quality and extended in time. Twenty-one pieces of wood, representing separate trees, have been identified for the period prior to 4000 B.C. and these have made possible a chronology extension to nearly 8200 years. In this paper, the specimens are described in terms of the time range each represents and their statistical parameters relating to the quality of tree-ring record they contain. These specimens not only have extended the climatic tree-ring chronology, but also have made possible the calendar-year dating of additional samples for calibration of the radiocarbon time scale.
    • Dendrochronology on and Adjoining the Appleton-Whittell Research Ranch

      Ferguson, C. W.; Laboratory of Tree-Ring Research, University of Arizona (Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1983-03-11)
    • Dendroecological Research on Mt. Graham: Development of Tree-Ring Chronologies for the Pinaleño Mountains

      Grissino-Mayer, Henri D.; Swetnam, Thomas W.; Laboratory of Tree-Ring Research, University of Arizona (1992-03-30)