Interannual Variability and Trends of Extratropical Ozone. Part II: Southern Hemisphere

Jiang, Xun; Pawson, Steven; Camp, C. D.; Nielsen, J. E.; Shia, Run‐Lie; Liao, Tien-Hao; Limpasuvan, Varavut; Yung, Yuk L.

doi:10.1175/2008jas2793.1

Cited by 18 publications

(14 citation statements)

References 39 publications

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“…While ERA-40 total column ozone has been reported to agree well with independent observations [Dethof and Hólm, 2004;Jiang et al, 2008b], studies involving ERA-40 ozone profiles seem scarce. Comparing ERA-40 ozone to sonde observations at high latitude, we find that although the annual cycle is captured well, polar ozone variability is underestimated in this data set.…”

Section: Comparison To Era-40 Ozonementioning

confidence: 76%

A long‐term stratospheric ozone data set from assimilation of satellite observations: High‐latitude ozone anomalies

et al. 2010

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[1] A 29 year data set of stratospheric ozone from sequential assimilation of solar backscatter UV (SBUV) satellite ozone profile observations into a chemical transport model is introduced and validated against independent observations (satellite instruments and sondes). Our assimilated data set shows excellent agreement with ozone profile data from sonde measurements from high-latitude observation sites on both hemispheres and Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) satellite observations, including during polar night when no SBUV observations are available. Although we only assimilate ozone profiles, total column ozone in the assimilated data set is in good agreement with independent satellite observations from the Global Ozone Monitoring Experiment (GOME), the Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY), and the Total Ozone Mapping Spectrometer (TOMS). The data set can thus be viewed as a consistent long-term data set closing the gaps in satellite observations in order to investigate high-latitude ozone variability. We then use the assimilated data set to analyze the development and persistence of both high and low ozone anomalies in the Arctic stratosphere. Ozone anomalies typically develop in the 1000 K potential temperature (∼35 km) region and slowly descend from there, remaining visible for around 7 months. Anomalies in the stratospheric circulation, expressed by the Northern Hemisphere annular mode (NAM) index, show a large influence on ozone anomalies. Extreme phases of the NAM index (strong and weak vortex events) lead to the creation of distinctively shaped ozone anomalies, which first appear in the uppermost stratosphere and then rapidly cover the upper and middle stratosphere, from where they then slowly descend into the lowermost stratosphere within 5 months.Citation: Kiesewetter, G., B.-M. Sinnhuber, M. Vountas, M. Weber, and J. P. Burrows (2010), A long-term stratospheric ozone data set from assimilation of satellite observations: High-latitude ozone anomalies,

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Section: Comparison To Era-40 Ozonementioning

confidence: 76%

A long‐term stratospheric ozone data set from assimilation of satellite observations: High‐latitude ozone anomalies

et al. 2010

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“…In this paper we include several dynamical proxies in the statistical regression model that help to capture the interannual ozone variability observed in the upper and middle stratosphere over Syowa station. The attribution of ozone variability described in this paper is specific to the processes affecting ozone at the Antarctic coastal area, and may be different for other geolocations above the Antarctic continent because the polar vortex exhibits nonzonal features during the austral spring time (Schoeberl et al, 1992;Manney et al, 1995Manney et al, , 1999Jiang et al, 2008;Hitchman and Rogal, 2010;Hassler et al, 2011;and references therein).…”

Section: Trend Evaluationmentioning

confidence: 94%

“…Variations in the Brewer-Dobson circulation (BDC), in wave activity, and in the polar vortex all contribute to the observed distribution of ozone (e.g., Manney et al, 1995;Jiang et al, 2008;Hitchman and Rogal, 2010). Conversely, ozone depletion has been shown to affect the circulation in the Antarctic's stratosphere and troposphere (e.g., Thompson and Solomon, 2002;Li et al, 2010;Oman et al, 2010, Son et al, 2010.…”

Section: Proxy Data Setsmentioning

confidence: 99%

Long-term changes in the upper stratospheric ozone at Syowa, Antarctica

et al. 2014

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Abstract. Analyses of stratospheric ozone data determined from Dobson-Umkehr measurements since 1977 at the Syowa (69.0 • S, 39.6 • E), Antarctica, station show a significant decrease in ozone at altitudes higher than that of the 4 hPa pressure level during the 1980s and 1990s. Ozone values over Syowa have remained low since 2001. The time series of upper stratospheric ozone from the homogenized NOAA SBUV (Solar Backscatter Ultraviolet Instrument)(/2) 8.6 overpass data (±4 • , 24 h) are in qualitative agreement with those from the Syowa station data. Ozone recovery during the austral spring over the Syowa station appears to be slower than predicted by the equivalent effective stratospheric chlorine (EESC) curve. The long-term changes in the station's equivalent latitude (indicative of vortex size/position in winter and spring) are derived from MERRA (Modern Era Retrospective-analysis for Research and Applications) reanalyses at ∼ 2 and ∼ 50 hPa. These data are used to attribute some of the upper and middle stratospheric ozone changes to the changes in vortex position relative to the station's location. In addition, high correlation of the Southern Hemisphere annular mode (SAM) with polar upper stratospheric ozone during years of maximum solar activity points toward a strong relationship between the strength of the Brewer-Dobson circulation and the polar stratospheric ozone recovery. In the lower stratosphere, ozone recovery attributable to CFCs (chlorofluorocarbons) is still not definitive, whereas the recovery of the upper stratosphere is slower than predicted. Further research indicates that dynamical and other chemical changes in the atmosphere are delaying detection of recovery over this station.

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“…Some recent studies further suggest that atmospheric processes have significant influences on the temporal variability of CO 2 Jiang et al 2010;Wang et al 2011;Jiang et al 2013Jiang et al , 2012. It was found that the intraseasonal variability (e.g., MaddenJulian oscillation and semiannual oscillation) influence CO 2 concentrations in the middle troposphere Jiang et al 2013). Interannual variability (e.g., El…”

Section: Introductionmentioning

confidence: 99%

“…Niño-Southern Oscillation) can also modulate CO 2 concentrations at the surface and midtroposphere (Keeling et al 1995;Jones et al 2001;Nevison et al 2008;Jiang et al 2010;Jiang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Influence of Stratospheric Sudden Warming on AIRS Midtropospheric CO2

Jiang

Wang

Olsen

et al. 2013

Journal of the Atmospheric Sciences

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Midtropospheric CO 2 retrievals from the Atmospheric Infrared Sounder (AIRS) were used to explore the influence of stratospheric sudden warming (SSW) on CO 2 in the middle to upper troposphere. To choose the SSW events that had strong coupling between the stratosphere and troposphere, the authors applied a principal component analysis to the NCEP/Department of Energy Global Reanalysis 2 (NCEP-2) geopotential height data at 17 pressure levels. Two events (April 2003 and March 2005) that have strong couplings between the stratosphere and troposphere were chosen to investigate the influence of SSW on AIRS midtropospheric CO 2 . The authors investigated the temporal and spatial variations of AIRS midtropospheric CO 2 before and after the SSW events and found that the midtropospheric CO 2 concentrations increased by 2-3 ppm within a few days after the SSW events. These results can be used to better understand how the chemical tracers respond to the large-scale dynamics in the high latitudes.

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Interannual Variability and Trends of Extratropical Ozone. Part II: Southern Hemisphere

Cited by 18 publications

References 39 publications

A long‐term stratospheric ozone data set from assimilation of satellite observations: High‐latitude ozone anomalies

A long‐term stratospheric ozone data set from assimilation of satellite observations: High‐latitude ozone anomalies

Long-term changes in the upper stratospheric ozone at Syowa, Antarctica

Influence of Stratospheric Sudden Warming on AIRS Midtropospheric CO2

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