Picture of a sphere with binary code

Making Strathclyde research discoverable to the world...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. It exposes Strathclyde's world leading Open Access research to many of the world's leading resource discovery tools, and from there onto the screens of researchers around the world.

Explore Strathclyde Open Access research content

A possible paleoclimatic enso indicator in the spatial variation of annual tree-ring C-14

Jirikowic, J.L. and Kalin, R. (1993) A possible paleoclimatic enso indicator in the spatial variation of annual tree-ring C-14. Geophysical Research Letters, 20 (6). pp. 439-442. ISSN 0094-8276

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Preliminary investigations show regional differences in atmospheric C-14 activity archived in tree-ring cellulose may reflect oceanic and atmospheric shifts associated with ENSO (El Nino-Southern Oscillation) events. Much of the shared variation between sites in Washington and Arizona can be attributed to global forcings such as anthropogenic C-14-depleted CO2 emissions and modulation of C-14 production. The contrasted residual variation between the Washington and Arizona data sets correlates with the annual Southern Oscillation Index (SOI) of the previous year. The spatial differences between DELTAC-14 data sets may provide a proxy indicator of ENSO phenomenon.