Ozone mini-hole observation over the Balkan Peninsula in March 2005

Werner, R.; Valev, Dimitar; Atanassov, At.; Kostadinov, I.; Petkov, Boyan; Giovanelli, G.; Stebel, K.; Petritoli, A.; Palazzi, Elisa; Gausa, Michael; Markova, T.

doi:10.1016/j.asr.2008.03.028

Cited by 5 publications

(6 citation statements)

References 17 publications

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“…The total valley is also found in other areas and is also called mini ozone hole [3,4]. The total ozone valley or mini ozone hole is generated dynamically in two ways, either by poor-ozone air mass transport from the tropics to higher latitudes by planetary wave activity or is connected with strong adiabatic uplifting of the tropopause height [3][4][5][6][7]. Figure 4 shows a total ozone valley occurring in Tibetan Plateau on October 4, 2009, the lowest total ozone amount in the central area is about 220 DU.…”

Section: Monitoring For Tibetan Plateau Total Ozone Valleymentioning

confidence: 97%

“…The total ozone amount near the center of Tibetan total ozone valley is below 220 DU, 10% lower than the average value of the same latitude zone, the area of ozone valley can reach 2000000 km 2 . The total valley is also found in other areas and is also called mini ozone hole [3,4]. The total ozone valley or mini ozone hole is generated dynamically in two ways, either by poor-ozone air mass transport from the tropics to higher latitudes by planetary wave activity or is connected with strong adiabatic uplifting of the tropopause height [3][4][5][6][7].…”

Section: Monitoring For Tibetan Plateau Total Ozone Valleymentioning

confidence: 99%

“…Since the Antarctica ozone hole was first discovered by Farman [2], significant changes of the stratospheric ozone have been found in many areas such as the Tibetan Plateau [3][4][5][6][7]. Continuous global ozone data are needed for understanding the temporal-spatial distribution and variability in the atmospheric ozone.…”

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confidence: 99%

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Analysis for retrieval and validation results of FY-3 Total Ozone Unit (TOU)

Wang

Zhang

et al. 2010

Chin. Sci. Bull.

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Retrieval experiment was made for global total column ozone using the first year measurements of Total Ozone Unit (TOU) on board the second generation polar orbiting meteorological satellite of China, FY-3/A. The retrieval results were analyzed and validated by comparison with AURA/OMI, Meteop/GOME-2 global ozone products and ground-based ozone measurement data. The qualititative comparisons over the globe especially over Antarctica and the Tibetan Plateau show that the spatial and temporal distribution characteristics are consistent with OMI and GOME-2 products. The quantitative comparisons with ground-based measurements and AURA/OMI ozone product were made over 74 stations, the TOU total ozone retrieval has a 3% rms relative error compared with AURA/OMI ozone product and 4.2% rms relative error with ground-based measurements. The maximum difference between satellite retrieval and ground-based measurements was found in the Antarctica ozone hole. The TOU global ozone product is operational and distributed to all users.Total Ozone Unit, total column ozone, FY-3 satellite, retrieval, validation Citation:Wang W H, Zhang X Y, An X Q, et al. Analysis for retrieval and validation results of FY-3 Total Ozone Unit (TOU).

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Section: Monitoring For Tibetan Plateau Total Ozone Valleymentioning

confidence: 97%

Section: Monitoring For Tibetan Plateau Total Ozone Valleymentioning

confidence: 99%

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Analysis for retrieval and validation results of FY-3 Total Ozone Unit (TOU)

Wang

Zhang

et al. 2010

Chin. Sci. Bull.

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“…Orsolini et al (2003) demonstrated that intense LOEs in summertime over northern Norway were related to a meridional displacement of the mid-stratospheric pool of low ozone air that resides over the Arctic. This displacement could affect lower latitudes such as Italy and the Balkans (Werner et al, 2009).…”

Section: Climatology Of Ozone Mini-holesmentioning

confidence: 99%

“…However, the enhanced UV radiation could have had potential implications on biological processes and a significant impact on human health in particular, as the seasonal mean UV levels are high. Many other studies have analysed in detail the occurrence of ozone mini-holes at different places in winter (Bojkov and Balis, 2001;Semane et al, 2002;Antón et al, 2007) and in spring (Stick et al, 2006;Werner et al, 2009).…”

Section: Ozone Mini-holes and Uv Radiationmentioning

confidence: 99%

Impact of two low ozone events on surface solar UV radiation over the northeast of Spain

Solá

Lorente

2011

Intl Journal of Climatology

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Total ozone column (TOC) abundance over northeastern Spain follows a strong seasonal pattern with higher values in spring and lower values in fall. The annual cycle has weakened since the late 1970s, due to a decrease in the ozone annual maximum monthly mean in spring. The long-term trend and the seasonal variability of the TOC suggest that thresholds of ozone 'mini-holes' should be defined as deviations from local monthly mean levels. Ozone mini-holes are synoptic scale regions of short-term, large TOC reductions. The climatology of ozone mini-holes over Barcelona shows a seasonal pattern, with a higher frequency in winter and early spring. Nevertheless, many of these events are detected in September, when the UV irradiance reaching the Earth's surface is still high. This may enhance negative effects such as erythema.The deepest ozone 'mini-hole' ever reported over the area was on 10 January 2004, when the daily TOC was about 40% lower than the climatological mean for January. A high-pressure system induced cloud-free skies, and the small temporal variations in aerosol concentrations indicated that low TOC was responsible for the enhanced UV radiation at ground level: the erythemal irradiance at noon was 36% higher than the day before. However, in absolute terms, this increase is relatively small as UV levels in winter are low. Nevertheless, the low ozone events observed in late spring could be biologically harmful, even though the TOC anomaly was rather less than the winter values. On 20 April 2004, low TOC and high solar elevation favoured the increase that was detected in UVB radiation, especially at shorter wavelengths. The UV Index at noon was 1 unit higher than the previous day's value, due to an uplift of the tropopause and a reduction in the ozone mixing ratio in the upper troposphere-lower stratosphere (UTLS) region.

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