Antarctic ozone depletion and trends in tropopause Rossby wave breaking

T. Ndarana; D. W. Waugh; L. M. Polvani; G. J.P. Correa; E. P. Gerber

doi:10.1002/asl.384

Antarctic ozone depletion and trends in tropopause Rossby wave breaking

T. Ndarana, D. W. Waugh, L. M. Polvani, G. J.P. Correa, E. P. Gerber

Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

Trends in summer tropopause Rossby wave breaking (RWB) are examined using meteorological reanalyses and model integrations. The reanalyses for the last 30 years show large increases in RWB on the equatorward side of the tropospheric jet and weak decreases on the poleward side. Comparable changes in RWB are found in general circulation model integrations whose stratospheric ozone differs between 1960 and 2000 levels, but not in integrations that differ only in their greenhouse gas concentrations and sea-surface temperatures. These results indicate that the formation of the ozone hole has led to changes in RWB frequency during southern summer.

Original language	English (US)
Pages (from-to)	164-168
Number of pages	5
Journal	Atmospheric Science Letters
Volume	13
Issue number	3
DOIs	https://doi.org/10.1002/asl.384
State	Published - Jul 2012

Keywords

Ozone hole
Rossby waves
Trends

ASJC Scopus subject areas

Atmospheric Science

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10.1002/asl.384

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abstract = "Trends in summer tropopause Rossby wave breaking (RWB) are examined using meteorological reanalyses and model integrations. The reanalyses for the last 30 years show large increases in RWB on the equatorward side of the tropospheric jet and weak decreases on the poleward side. Comparable changes in RWB are found in general circulation model integrations whose stratospheric ozone differs between 1960 and 2000 levels, but not in integrations that differ only in their greenhouse gas concentrations and sea-surface temperatures. These results indicate that the formation of the ozone hole has led to changes in RWB frequency during southern summer.",

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author = "T. Ndarana and Waugh, {D. W.} and Polvani, {L. M.} and Correa, {G. J.P.} and Gerber, {E. P.}",

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T1 - Antarctic ozone depletion and trends in tropopause Rossby wave breaking

AU - Ndarana, T.

AU - Waugh, D. W.

AU - Polvani, L. M.

AU - Correa, G. J.P.

AU - Gerber, E. P.

PY - 2012/7

Y1 - 2012/7

N2 - Trends in summer tropopause Rossby wave breaking (RWB) are examined using meteorological reanalyses and model integrations. The reanalyses for the last 30 years show large increases in RWB on the equatorward side of the tropospheric jet and weak decreases on the poleward side. Comparable changes in RWB are found in general circulation model integrations whose stratospheric ozone differs between 1960 and 2000 levels, but not in integrations that differ only in their greenhouse gas concentrations and sea-surface temperatures. These results indicate that the formation of the ozone hole has led to changes in RWB frequency during southern summer.

AB - Trends in summer tropopause Rossby wave breaking (RWB) are examined using meteorological reanalyses and model integrations. The reanalyses for the last 30 years show large increases in RWB on the equatorward side of the tropospheric jet and weak decreases on the poleward side. Comparable changes in RWB are found in general circulation model integrations whose stratospheric ozone differs between 1960 and 2000 levels, but not in integrations that differ only in their greenhouse gas concentrations and sea-surface temperatures. These results indicate that the formation of the ozone hole has led to changes in RWB frequency during southern summer.

KW - Ozone hole

KW - Rossby waves

KW - Trends

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Antarctic ozone depletion and trends in tropopause Rossby wave breaking

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Keywords

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