Report on the method for determining the location of the polar vortex boundary region

To determine the boundary region of the polar vortex objectively using the PV distribution on isentropic surfaces, the equivalent latitude(Eql) of the polar vortex boundary was calculated using a slightly modified form of the technique of E.R. Nash et al.(J. Geophys. Res., 101D, 9471, 1996). Using t...

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Bibliographic Details
Main Authors: Michio Hirota, Kazuhiko Nagata, Kazuyoshi Yoshimatsu, Koji Miyagawa, Yukiko Ikeda, Toshifumi Fujimoto, Yukio Makino
Format: Report
Language:English
Published: Meteorological Research Institute/Japan Meteorological Agency/Japan Meteorological Agency/Aerological Observatory/Japan Meteorological Agency/Japan Meteorological Agency/Japan Meteorological Agency 2003
Subjects:
Eureka
Nash
Polar meteorology and glaciology
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2966
http://id.nii.ac.jp/1291/00002966/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2966&item_no=1&attribute_id=18&file_no=1
Description
Summary:To determine the boundary region of the polar vortex objectively using the PV distribution on isentropic surfaces, the equivalent latitude(Eql) of the polar vortex boundary was calculated using a slightly modified form of the technique of E.R. Nash et al.(J. Geophys. Res., 101D, 9471, 1996). Using the NCEP/NCAR reanal- ysis data, the Eql of the polar vortex boundary region in the winter of 1999/2000 was calculated, and compared with the ozone mixing ratio in the lower stratosphere over Eureka observatory(80°N , 86°W ). The results indicate that this method determines the boundary region of the polar vortex well.

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