Return to CIG

Search

View All Publications

Go To Publication by Year:

View Publications by Topic:

Adaptation

Agriculture

Air Quality

Aquatic Ecosystems and Fisheries

Background Papers

Climate: Atmospheric Modeling

Climate: Coupled Atmosphere-Ocean Modeling

Climate: Diagnostics

Climate: Global Climate

Climate: Ocean Modeling

Climate: PNW Climate

Climate: Regional Climate Modeling

Coastal Ecosystems

Coastal Environments

Conservation Biology

Data Analysis and Sharing

Energy

Fact Sheets

Forecasts and Applications

Forest Ecosystems

Human Health

Hydrology and Water Resources

Infrastructure

Integrated Assessment

Ocean Acidification

Oceanography

Program Documents

Science Advisory Reports

Societal Dimensions

Special Reports

Theses and Dissertations

View Publications by Author:

Search the Publication Abstracts:


Other CSES Links:

About CSES

CSES Personnel

Data / Links

Publications

Welcome to the publications directory for the Climate Impacts Group and the Climate Dynamics Group. Please contact the web administrator for assistance with any of these publications.


View: Abstract

Characterizing the interannual variability of the equatorial Pacific: An OLR perspective

Harrison, D.E., and A.M. Chiodi. 2008. Characterizing the interannual variability of the equatorial Pacific: An OLR perspective. NOAA Tech. Memo. OAR PMEL-140. Seattle, WA, 30pp.

Abstract

There has been considerable societal importance placed on the ability to distinguish and predict interannual anomalies of the tropical Pacific's coupled ocean-atmosphere system. Specific importance has been placed on determining when anomalous conditions follow one of two sets of conditions first described in detail by Bjerknes and commonly referred to as "El Nino" and "La Nina." Here, we investigate the use of outgoing-longwave-radiation (OLR) as a means of determining "El Nino"-type anomalies operationally and retrospectively.

We find that OLR, averaged over regions which are known to play a role in Bjerknes feedbacks over the tropical Pacific, can be used to unambiguously identify such interannual anomalies and that some OLR-based indices are advantageous in terms of the degree to which anomalous years are clearly distinguished from background variability. Thus, OLR offers a useful perspective on the state of the coupled tropical Pacific system and should be considered when assessing the state of this system, along with other more traditionally discussed variables such as sea surface temperature (SST) and sea level pressure (SLP).