Monitoring of the stratospheric chlorine activation by Global Ozone Monitoring Experiment (GOME) OClO measurements in the austral and boreal winters 1995 through 1999

Wagner, Thomas; Leue, Carsten; Pfeilsticker, K.; Platt, U.

doi:10.1029/2000jd900458

Cited by 48 publications

(88 citation statements)

References 70 publications

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“…The event is also confirmed by the presence of high OClO levels observed in December by the UV-Visible spectrometer at Harestua in Southern Norway (Fig. 3) when the vortex was passing above the station and by the ERS-2/GOME (Global Ozone Monitoring Experiment on board ERS-2 satellite) observations displaying an unusual high activation in December (http:// www.iup.physik.uni-bremen.de/gomenrt2003/) compared to the previous winters (Wagner et al, 2001(Wagner et al, , 2002WMO assessment, 2003).…”

Section: Other Reportsmentioning

confidence: 52%

Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters

Goutail¹,

Pommereau²,

Lefèvre³

et al. 2005

Atmos. Chem. Phys.

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Abstract. Ozone loss during the winter 2002/2003 has been evaluated from comparisons between total ozone reported by the SAOZ network and simulated in passive mode by both REPROBUS and SLIMCAT. Despite the fact that the two models have a different approach to calculate the descent inside vortex, both evaluations provide similar results 18±4% using REPROBUS and 20±4% using SLIMCAT and show that the loss started around mid-December, at least ten to twenty days earlier than during any of the previous eleven winters, except 1993/1994. This unusual behaviour is consistent with the low temperatures reported in the stratosphere as well to the signature of early chlorine activation indicated by ground-based, balloon and satellite observations. A significant ozone loss is also simulated by the current versions of two models, but of lesser amplitude compared to SAOZ, 13±2% for REPROBUS and 16±2% for SLIMCAT, the underestimation being already observed by mid-January. The early ozone depletion captured by both model show that chemical depletion did indeed take place in December, predominantly at the illuminated edge of the distorted vortex, but the reason for the underestimation compared to the observations and the differences among the models have still to be investigated.

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Section: Other Reportsmentioning

confidence: 52%

Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters

Goutail¹,

Pommereau²,

Lefèvre³

et al. 2005

Atmos. Chem. Phys.

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“…Another important aspect is that temperature controls polar ozone loss due to heterogeneous chemistry requiring polar stratospheric clouds to be formed (usually below 195 K). The inter-annual variation of chlorine activation with variations in the winter eddy heat flux was shown from OClO data from GOME that are indicative for chlorine activation and subsequent catalytic ozone losses inside the polar vortex (Solomon, 1999;Wagner et al, 2001;Richter et al, 2005). Figure 3 shows the corresponding figure for the SH.…”

Section: Coupling Of Chemistry and Dynamics Of Total Ozonementioning

confidence: 99%

The Brewer-Dobson circulation and total ozone from seasonal to decadal time scales

et al. 2011

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Abstract.The effect of the winter Brewer-Dobson circulation (BDC) on the seasonal and decadal evolution of total ozone in both hemispheres is investigated using satellite total ozone data from the merged GOME/SCIAMACHY/GOME-2 (GSG) data set (1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010) and outputs from two chemistry-climate models (CCM), the FUB-EMAC and DLR-E39C-A models. Combining data from both hemispheres a linear relationship between the winter average extratropical 100 hPa eddy heat flux and the ozone ratio with respect to fall ozone levels exists and is statistically significant for tropical as well as polar ozone. The high correlation at high latitudes persists well into the summer months until the onset of the next winter season. The anti-correlation of the cumulative eddy heat flux with tropical ozone ratios, however, breaks down in spring as the polar vortex erodes and changes to a weak positive correlation similar to that observed at high latitudes. The inter-annual variability and decadal evolution of ozone in each hemisphere in winter, spring, and summer are therefore driven by the cumulative effect of the previous winter's meridional circulation. This compact linear relationship is also found in both CCMs used in this study indicating that current models realistically describe the variability in stratospheric circulation and its effect on total ozone. Both models show a positive trend in the winter mean eddy heat flux (and winter BDC strength) in both hemispheres until year 2050, however the inter-annual variability (peak-to-peak) is two to three times larger than the mean change between 1960 and 2050. It is, nevertheless, possible to detect a shift in this compact linear relationship related to past and future changes in the stratoCorrespondence to: M. Weber (weber@uni-bremen.de) spheric halogen load. Using the SBUV/TOMS/OMI (MOD V8) merged data set , it can be shown that from the decade 1990-1999 to 2000-2010 this linear relationship remained unchanged (before and after the turnaround in the stratospheric halogen load), while a shift is evident between 1980-1989 (upward trend in stratospheric halogen) and the 1990s, which is a clear sign that an onset of recovery is detectable despite the large variability in polar ozone. Because of the large variability from year to year in the BDC circulation substantial polar ozone depletion may still occur in coming decades in selected winters with weak BDC and very low polar stratospheric temperatures.

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“…Continuous measurements from space started at the end of 1978 with the Solar Backscatter UltraViolet (SBUV) and Total Ozone Mapping Spectrometer (TOMS) instruments . Starting in 1995, the SBUV-2 and TOMS observations were complemented by the European Global Ozone Monitoring Experiment (GOME)-type instruments that in addition to ozone measure other important species (NO 2 and OClO) relevant for stratospheric ozone chemistry (e.g., Burrows et al, 1999;Wagner et al, 2001;Richter et al, 2005).…”

mentioning

confidence: 99%

Total ozone trends from 1979 to 2016 derived from five merged observational datasets – the emergence into ozone recovery

et al. 2018

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Monitoring of the stratospheric chlorine activation by Global Ozone Monitoring Experiment (GOME) OClO measurements in the austral and boreal winters 1995 through 1999

Cited by 48 publications

References 70 publications

Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters

Early unusual ozone loss during the Arctic winter 2002/2003 compared to other winters

The Brewer-Dobson circulation and total ozone from seasonal to decadal time scales

Total ozone trends from 1979 to 2016 derived from five merged observational datasets – the emergence into ozone recovery

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