Decrease of summer tropospheric ozone concentrations in Antarctica

Schnell, R. C.; Liu, S. C.; Oltmans, S. J.; Stone, Robert S.; Hofmann, D. J.; Dutton, Ellsworth G; Deshler, Terry; Sturges, William T.; Harder, J. W.; Sewell, Scott; Trainer, M.; Harris, Joyce M.

doi:10.1038/351726a0

Cited by 86 publications

(29 citation statements)

References 21 publications

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“…Lower tropospheric ozone followed a prominent seasonal change of winter maximum and summer minimum, which is very close to results of surface ozone measurements (36)(37)(38). It has been suggested that the intrusion of stratospheric ozone into the troposphere occurs over Syowa Station throughout the year and that air with low ozone concentration is transported from subpolar or middle latitudes to Antarctica through the lower troposphere from spring to early autumn.…”

Section: Resultssupporting

confidence: 62%

Springtime peaks of trace metals in Antarctic snow.

Ikegawa

Kimura²,

Honda³

et al. 1997

Environ Health Perspect

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Section: Resultssupporting

confidence: 62%

Springtime peaks of trace metals in Antarctic snow.

Ikegawa

Kimura²,

Honda³

et al. 1997

Environ Health Perspect

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“…Conversely, in hydrocarbon and NO x -poor environments the additional UV provokes a net O 3 loss -as in Reactions 1, 2 and 7. This development was observed at the South Pole ozone monitoring station (Schnell et al, 1991;Thompson, 1991).…”

Section: X10"mentioning

confidence: 85%

Tropospheric Ozone and Climate Change

1993

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“…The concentration of ozone precursors like nitrogen oxides in Antarctica is very low all year long. However, in the austral summer solar radiation is so strong that the ozone destruction by ultraviolet radiation is dominant over its photochemical production, and consequently the surface ozone concentration is low in summer in Antarctica [27]. By contrast, the surface ozone concentration is high in winter because there is no solar radiation during the polar night period in austral winter and the solar radiation intensity is weak right before and after the polar night period.…”

Section: Impact Of Local Wind On Observed Surface Ozone Concentrationmentioning

confidence: 92%

Surface ozone monitoring and background characteristics at Zhongshan Station over Antarctica

Wang

Bian

et al. 2011

Chin. Sci. Bull.

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Seasonal variation in surface ozone and the relationship between the background ozone concentration and wind were evaluated at Zhongshan Station, Antarctica using 2008 data. The wind frequency from the station area was only 2%, while the prevailing wind frequency was much larger (79.2%). This indicates that the surface ozone observations were not affected by the human activities at the station, and therefore could be counted as background concentrations of surface ozone along Antarctic coast. The concentration of surface ozone shows a distinct annual variation with the yearly mean of 25.0 nmol mol -1 and the maximum in winter, the minimum in summer. The surface ozone concentration had a strong negative correlation with ultraviolet radiation, and the mean values during polar night were one to two times higher than those in summer. These results imply that photochemical destruction of ozone dominates over Antarctica. The ozone depletion events at Zhongshan Station were obviously related to lower temperatures and higher BrO concentrations. Backward trajectory analysis reveals that the ozone depletion events are predominately caused by the high BrO concentrations.

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Decrease of summer tropospheric ozone concentrations in Antarctica

Cited by 86 publications

References 21 publications

Springtime peaks of trace metals in Antarctic snow.

Springtime peaks of trace metals in Antarctic snow.

Tropospheric Ozone and Climate Change

Surface ozone monitoring and background characteristics at Zhongshan Station over Antarctica

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