The meridional mode of global tropospheric-stratospheric circulation

Details The meridional mode of global tropospheric-stratospheric circulation The meridional mode of global tropospheric-stratospheric circulation

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jastp..72..856y&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 72, Issue 11-12, p. 856-863.

Physics

Scientific paper

The spatio-temporal variations of major meridional modes are studied by using the ECMWF and NCEP/NCAR reanalyzed geopotential data between 70 and 10 hPa during 1979 and 2001. The variance contribution rates from the first and second modes are 56-69% and 14-22%, respectively, for ECMWF, but 76-85% and 9-10% for NCEP/NCAR. The climatic trend coefficients are positive and negative in the troposphere and stratosphere, respectively. The reversal is remarkably correlated with the AO/NAM, AAO/SAM and polar vortex, suggesting their important role in connecting the mid-low and upper circulation and the interaction between SH and NH.

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