EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Nakamura et al. 2006
Nakamura, T., Tachibana, Y., Honda, M. and Yamane, S. (2006). Influence of the Northern Hemisphere annular mode on ENSO by modulating westerly wind bursts. Geophysical Research Letters 33: doi: 10.1029/2005GL025432. issn: 0094-8276.

The influence of the Northern Hemisphere annular mode (NAM) on the El Ni¿o/Southern Oscillation (ENSO) was examined using 41-year reanalysis data and an atmospheric general circulation model (AGCM). Significant lag correlations between the NAM index for spring and the Ni¿o-3 index for the following winter were revealed. An anomalous lower tropospheric westerly associated with modulation of the westerly wind burst (WWB) over the western tropical Pacific in spring often coincided with the positive phase of the NAM and extended eastward during summer and autumn. Then, warm sea surface temperature (SST) anomalies reflecting El Ni¿o appeared over the eastern tropical Pacific in early winter. In an AGCM experiment in which SSTs were fixed as a climatological-mean monthly distribution, the interannual modulation of WWB was significantly associated with NAM variability in spring, supporting the possible influence of the NAM in spring on an ENSO outbreak the following winter.

BACKGROUND DATA FILES

Abstract

Keywords
Atmospheric Processes, General circulation, Atmospheric Processes, Ocean/atmosphere interactions (0312, 4504), Atmospheric Processes, Climate change and variability (1616, 1635, 3309, 4215, 4513)
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit