1976 step in the Pacific climate: forty environmental changes between 1968-1975 and 1977-1984

Ebbesmeyer, Curtis C. and Cayan, Daniel R. and McLain, Douglas R. and Nichols, Frederic H. and Peterson, David H. and Redmond, Kelly T. (1991) 1976 step in the Pacific climate: forty environmental changes between 1968-1975 and 1977-1984. In: Betancourt, J.L. and Tharp, V.L. (eds.) Proceedings of the Seventh annual Pacific Climate (PACLIM) Workshop : Asilomar, California -- April, 1990. West Sacramento, CA, California Department of Water Resources. Interagency Ecology Studies Program., pp. 115-126. (California Department of Water Resources. Interagency Ecology Studies Program.Technical Report,26)

[img]
Preview
PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (5Mb) | Preview

Abstract

Examination of 40 times series of multidisciplinary environmental variables from the Pacific Ocean and the Americas, collected in 1968 to 1984, demonstrated the remarkable consistency of a major climate-related, step-like change in 1976. to combine the 40 variables (e.g. air and water temperatures, Southern Oscillation, chlorophyll, geese, salmon, crabs, glaciers, atmospheric dust, coral, CO(sub 2), winds, ice cover, Bering Strait transport) into a single time series, standard variants of individual annual values (substracting the mean and dviding by a standard deviation) were averaged. Analysis of the resulting time series showed that the single step in 1976, separating the 1968-1975 period from the 1977-1984 period, accounted for 89% of variance within the compositie time series. Apparently, one of the Earth's large ecosystems occasionally undergoes large abrupt shifts.

Item Type: Book Section
Title: 1976 step in the Pacific climate: forty environmental changes between 1968-1975 and 1977-1984
Personal Creator/Author:
CreatorsEmail
Ebbesmeyer, Curtis C.
Cayan, Daniel R.
McLain, Douglas R.
Nichols, Frederic H.
Peterson, David H.
Redmond, Kelly T.
Title of Book: Proceedings of the Seventh annual Pacific Climate (PACLIM) Workshop : Asilomar, California -- April, 1990
Editors:
EditorsEmail
Betancourt, J.L.
Tharp, V.L.
Series Name: California Department of Water Resources. Interagency Ecology Studies Program.Technical Report
Number: 26
Page Range: pp. 115-126
Date: 1991
Publisher: California Department of Water Resources. Interagency Ecology Studies Program.
Place of Publication: West Sacramento, CA
Additional Information: Technical Report of the Interagency Ecological Studies Program for the Sacramento-San Joaquin Estuary, CL/PACLIM-IATR/91-26
Uncontrolled Keywords: PACLIM Workshop
Subjects: Atmospheric Sciences
Ecology
Oceanography
Earth Sciences
Environment
Item ID: 4562
Depositing User: Ms Debra Losey
Date Deposited: 18 Nov 2010 12:26
Last Modified: 14 Dec 2010 18:48
URI: http://aquaticcommons.org/id/eprint/4562

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...