The Global Distribution of Atmospheric Eddy Length Scales | Zendy

Elizabeth A. Barnes | Zendy; Dennis L. Hartmann | Zendy

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The Global Distribution of Atmospheric Eddy Length Scales

Author(s) -

Elizabeth A. Barnes,

Dennis L. Hartmann

Publication year - 2011

Publication title -

journal of climate

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.315

H-Index - 287

eISSN - 1520-0442

pISSN - 0894-8755

DOI - 10.1175/jcli-d-11-00331.1

Subject(s) - climatology , eddy , stratosphere , northern hemisphere , zonal and meridional , southern hemisphere , potential vorticity , atmospheric sciences , vorticity , range (aeronautics) , atmospheric circulation , geology , environmental science , meteorology , geography , turbulence , vortex , materials science , composite material

The correlation lengths of vorticity anomalies from temporal averages are examined in the 40-yr European Centre for Medium-Range Weather Forecasts Re-Analysis dataset. It is shown that, in the annual mean, eddies in the Southern Hemisphere are significantly larger than those in the Northern Hemisphere. The eddy vorticity lengths exhibit a strong seasonal cycle, with the largest scales occurring in the winter season. The maximum zonal eddy lengths closely follow the contours of the strong upper-level winds, while the maximum meridional lengths are found in jet exit regions and in the stratosphere.

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