Stationary planetary wave propagation in Northern Hemisphere winter ? climatological analysis of the refractive index

Li, Q.
Graf, H.-F.
Giorgetta, M. A.

Publication date

September 2006

Publisher

European Geosciences Union

Abstract

International audienceThe probability density on a height-meridional plane of negative refractive index squared f(nk2<0) is introduced as a new analysis tool to investigate the climatology of the propagation properties of stationary planetary waves based on NCEP/NCAR reanalysis data for 44 Northern Hemisphere boreal winters (1958?2002). This analysis shows the control of the atmospheric state on planetary wave propagation. It is found that not only the variability of atmospheric stability with altitudes, but also the variability with latitudes has significant influence on planetary wave propagation. Eliassen-Palm flux and divergence are also analyzed to investigate the eddy activities and forcing on zonal mean flow. Only the ultra-long plan...

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Stationary planetary wave propagation in Northern Hemisphere winter ? climatological analysis of the refractive index

Abstract

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Stationary planetary wave propagation in Northern Hemisphere winter ? climatological analysis of the refractive index

Abstract

Extracted data

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