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

J.L. Jirikowic, R. Kalin

Research output: Contribution to journalArticle

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.
LanguageEnglish
Pages439-442
Number of pages3
JournalGeophysical Research Letters
Volume20
Issue number6
Publication statusPublished - Mar 1993

Fingerprint

Southern Oscillation
tree ring
El Nino-Southern Oscillation
el Nino
spatial variation
rings
cellulose
modulation
shift
indicator
index

Keywords

  • tree-ring cellulose
  • oceanic and atmospheric shifts
  • ENSO events
  • El Nino-Southern Oscillation events

Cite this

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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.",
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A possible paleoclimatic enso indicator in the spatial variation of annual tree-ring C-14. / Jirikowic, J.L.; Kalin, R.

In: Geophysical Research Letters, Vol. 20, No. 6, 03.1993, p. 439-442.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A possible paleoclimatic enso indicator in the spatial variation of annual tree-ring C-14

AU - Jirikowic, J.L.

AU - Kalin, R.

PY - 1993/3

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N2 - 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.

AB - 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.

KW - tree-ring cellulose

KW - oceanic and atmospheric shifts

KW - ENSO events

KW - El Nino-Southern Oscillation events

M3 - Article

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SP - 439

EP - 442

JO - Geophysical Research Letters

T2 - Geophysical Research Letters

JF - Geophysical Research Letters

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