NDLI: Troposphere-stratosphere dynamic coupling under strong and weak polar vortex conditions

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Troposphere-stratosphere dynamic coupling under strong and weak polar vortex conditions

Content Provider	NASA Technical Reports Server (NTRS)
Author	Perlwitz, Judith Graf, Hans-F
Copyright Year	2001
Description	The relationship between Northern Hemisphere (NH) tropospheric and stratospheric wave-like anomalies of spherical zonal wave number (ZWN) 1 is studied by applying Canonical Correlation Analysis (CCA). A lag-correlation technique is used with 10-day lowpass filtered daily time series of 50- and 500-hPa geopotential heights. Generally stratospheric circulation is determined by ultralong tropospheric planetary waves. During winter seasons characterized either by any anomalously strong or weak polar winter vortex different propagation characteristics for waves of ZWN 1 are observed. The non-linear perspective of the results have implications for medium range weather forecast and climate sensitivity experiments.
File Size	475046
Page Count	8
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20010047840
Archival Resource Key	ark:/13960/t2f819g0h
Language	English
Publisher Date	2001-01-01
Access Restriction	Open
Subject Keyword	Geophysics Atmospheric Circulation Correlation Spherical Waves Time Series Analysis Vortices Northern Hemisphere Weather Forecasting Stratosphere Nonlinearity Tropospheric Waves Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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