The total ozone field separated into meteorological regimes. Part I: Defining the regimes

Robert D. Hudson, Alexander D. Frolov, Marcos Foilán Andrade Flores, Melanie B. Follette

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Traditionally, studies in the stratosphere using column ozone amount, ozone profiles, and dynamical variables at midlatitudes have centered on zonal averages of these quantities made over specific latitude bands. This is in sharp contrast to the studies made within the polar vortices where the average is made within regions defined by potential vorticity, a meteorological parameter. An analysis of the ozone field in the Northern Hemisphere outside of the polar vortex is presented in which it is shown that this field can also be separated into meteorological regimes. These regimes are defined as 1) the tropical regime, between the equator and the subtropical front; 2) the midlatitude regime, between the subtropical and polar fronts; 3) the polar regime, between the polar front and the polar vortex; and 4) the arctic regime, within the polar vortex. Within each regime the zonal daily mean total ozone value is relatively constant, with a clearly separate value for each regime. At the same time, the stratospheric ozone profiles are clearly distinguishable between regimes, each regime having a unique tropopause height. A midlatitude zonal average, whether of ozone profiles, total ozone, or dynamical variables, will depend on the relative mix of the respective values within each regime over the latitude range of the average. Because each regime has its own distinctive characteristic, these averages may not have physical significance.

Original languageEnglish
Pages (from-to)1669-1677
Number of pages9
JournalJournals of the Atmospheric Sciences
Volume60
Issue number14
DOIs
StatePublished - 15 Jul 2003
Externally publishedYes

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