Zonal asymmetries in middle atmospheric ozone and water vapour derived from Odin satellite data 2001–2010

Gabriel, Axel; Körnich, Heiner; Lossow, Stefan; Peters, D.; Urban, Joachim; Murtagh, Donal

doi:10.5194/acp-11-9865-2011

Cited by 37 publications

(64 citation statements)

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“…This differs from the asymmetry axis about 0 • -180 • E in the 100-hPa temperatures in Fig. 1 because of westward tilt of the QSW phase with altitude (Randel, 1988;Gabriel et al, 2011). Temperature fields (not shown) indicate also that the TOC maximum between 90 • E and 180 • E in Fig.…”

Section: Zonal Asymmetrymentioning

confidence: 95%

“…The largest changes in the ozone field in 2002 occur between about 90 • E and 240 • E (Fig. 6b) as a result of the maximum ozone accumulation due to the BDC which tend to be zonally asymmetric in the SH stratosphere (Salby and Callaghan, 2004;Sato et al, 2009;Gabriel et al, 2011). The TOC minimum between about 0 • E and 60 • W (Fig.…”

Section: Zonal Asymmetrymentioning

confidence: 99%

“…It is known that the quasi-stationary planetary wave of zonal wave number 1 (QSW1) dominates the Southern Hemisphere (SH) stratosphere (Randel, 1988;Wirth, 1993;Grytsai et al, 2007;Gabriel et al, 2011) leading to steady displacements of the stratospheric polar vortex relative to the pole (e.g. Waugh and Randel, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Quasi-stationary planetary waves in late winter Antarctic stratosphere temperature as a possible indicator of spring total ozone

et al. 2012

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Abstract. Stratospheric preconditions for the annual Antarctic ozone hole are analyzed using the amplitude of quasistationary planetary waves in temperature as a predictor of total ozone column behaviour. It is found that the quasistationary wave amplitude in August is highly correlated with September-November total ozone over Antarctica with correlation coefficient (r) as high as 0.83 indicating that quasi-stationary wave effects in late winter have a persisting influence on the evolution of the ozone hole during the following three months. Correlation maxima are found in both the lower and middle stratosphere. These likely result from the influence of wave activity on ozone depletion due to chemical processes, and ozone accumulation due to largescale ozone transport, respectively. Both correlation maxima indicate that spring total ozone tends to increase in the case of amplified activity of quasi-stationary waves in late winter. Since the stationary wave number one dominates the planetary waves that propagate into the Antarctic stratosphere in late austral winter, it is largely responsible for the stationary zonal asymmetry of the ozone hole relative to the South Pole. Processes associated with zonally asymmetric ozone and temperature which possibly contribute to differences in the persistence and location of the correlation maxima are discussed.

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Section: Zonal Asymmetrymentioning

confidence: 95%

Section: Zonal Asymmetrymentioning

confidence: 99%

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Quasi-stationary planetary waves in late winter Antarctic stratosphere temperature as a possible indicator of spring total ozone

et al. 2012

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“…Indeed, many previous studies have demonstrated the important role of planetary waves in modulating ZAO variations (e.g. Peters and Entzian 1999;Peters et al 2008;Efstathiou et al 2003;Hio and Yoden 2004;Grytsai et al 2005;Gabriel et al 2011;Ialongo et al 2012;Zhang et al 2015) and have proposed that the planetary waves of tropospheric origin could affect TCO through tropopause height modulations and stratosphere-troposphere exchange processes. Nevertheless, whether and to what extent planetary wave changes exert an influence on the zonally asymmetric TCO trend in the past 30 years remains unclear.…”

Section: Introductionmentioning

confidence: 99%

“…In the present study, we will analyze ZAO variations over the past three decades and diagnose the relative importance of various processes which dominate the zonally asymmetric TCO trend over the whole northern middle latitudes during winter (December-January-February, DJF) when the ZAO structure is more pronounced (Hood and Zaff 1995;Gabriel et al 2011). Data and methods are described in Sect.…”

Section: Introductionmentioning

confidence: 99%

Zonally asymmetric trends of winter total column ozone in the northern middle latitudes

et al. 2018

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Using various satellite-based observations, a linear ozone transport model (LOTM), a chemistry-climate model (WACCM3) and an offline chemical transport model (SLIMCAT), zonally asymmetric trends of the total column ozone (TCO) in the northern middle latitudes during winter for the period 1979-2015 are analyzed and factors responsible for the trends are diagnosed. The results reveal that there are significant negative TCO trends over the North Pacific and positive TCO trends over the northwestern North America. The zonally asymmetric TCO trends are mainly contributed by the trends in partial column ozone in the upper troposphere and lower stratosphere (UTLS) which are closely related to the long-term changes of geopotential height in the troposphere. Furthermore, the trends of geopontential height in the UTLS are mainly modulated by pattern changes in the Arctic Oscillation (AO), the Cold Ocean-Warm Land (COWL) and the North Pacific (NP) index. Accordingly, the zonally asymmetric TCO trends can be largely reconstructed by the trends of the above three teleconnection patterns. Sea surface temperature (SST) changes over the Pacific Ocean and the Atlantic Ocean can also exert a significant contribution to the zonally asymmetric TCO trends through their influence on the COWL and NP patterns. In addition, chemical ozone loss partially offsets the positive trends in zonal TCO anomalies over Central Siberia and enhances the positive TCO trends over northwestern North America. However, the contribution of chemical processes to the zonally asymmetric TCO trends is relatively smaller than that of dynamical transport effects. Interpreting the zonally asymmetric TCO trends and their responsible factors would be helpful for accurately predicting the stratospheric ozone return date in the northern middle latitudes.

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A three‐dimensional analysis on the role of atmospheric waves in the climatology and interannual variability of stratospheric final warming in the Southern Hemisphere

2016

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Stratospheric final warming (SFW) in the Southern Hemisphere is examined in terms of their interannual variability and climatology using reanalysis data from January 1979 to March 2014. First, it is shown from a two-dimensional transformed Eulerian mean (TEM) analysis that a time-integrated vertical component of Eliassen-Palm flux during the spring is significantly related with SFW date. To clarify the role of residual mean flow in the interannual variability of the SFW date, SFWs are categorized into early and late groups according to the SFW date and their differences are examined. Significant difference in potential temperature tendency is observed in the middle and lower stratosphere in early October. Their structure in the meridional cross section accords well with that of vertical potential temperature advection by the residual mean flow. Difference in heating rate by shortwave radiation is minor. These results suggest that the adiabatic heating associated with the residual mean flow largely affects polar stratospheric temperature during austral spring and SFW date. The analysis is extended to investigate the longitudinal structure by using a three-dimensional (3-D) TEM theory. The significant difference in potential temperature tendency is mainly observed around the Weddell Sea at 10 hPa. Next, climatological 3-D structure of a vertical component of the residual mean flow in association with SFW is examined in terms of the effect on the troposphere. The results suggest that a downward residual mean flow from the stratosphere penetrates into underlying troposphere over East Antarctica and partly influences tropospheric temperature there. an extended Hilbert transform in order to estimate the envelope function of momentum and energy fluxes of HIRANO ET AL.STRATOSPHERIC FINAL WARMING IN THE SH 8429

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Zonal asymmetries in middle atmospheric ozone and water vapour derived from Odin satellite data 2001–2010

Cited by 37 publications

References 50 publications

Quasi-stationary planetary waves in late winter Antarctic stratosphere temperature as a possible indicator of spring total ozone

Quasi-stationary planetary waves in late winter Antarctic stratosphere temperature as a possible indicator of spring total ozone

Zonally asymmetric trends of winter total column ozone in the northern middle latitudes

A three‐dimensional analysis on the role of atmospheric waves in the climatology and interannual variability of stratospheric final warming in the Southern Hemisphere

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