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2011

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/49257

Evidence for the influence of the North Atlantic Oscillation on the total ozone column at northern low latitudes and midlatitudes during winter and summer seasons.

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Recurs relacionat

http://dx.doi.org/10.1029/2011JD016539

Resum

The strong influence of the winter North Atlantic Oscillation (NAO) on the total ozone column (TOC) in the Northern Hemisphere has been reported in a number of previous studies. In this study we show that this influence is not restricted to the winter season but is also significant in summer. Especially interesting effects of the summer NAO (SNAO) on the TOC are observed over the eastern Mediterranean region, where a strongly positive SNAO index is related to the creation of a geopotential height-negative anomaly over Greece with maximum amplitude at 200 hPa. Another anomaly was observed west of the Iberian Peninsula with similar effects on the TOC. Analyzing 26 years of Total Ozone Mapping Spectrometer (TOMS) and Ozone Monitoring Instrument (OMI) data from the equator to midlatitudes (60°) in the Northern Hemisphere, we demonstrate that the SNAO accounts for up to 30% of the TOC variability with a strong latitudinal and longitudinal dependence. Additionally, we obtain significant correlations between the NAO index and the thermal tropopause pressure and also with the geopotential heights at 200 and 500 hPa. Finally, some indirect connections between NAO and the TOC through teleconnections are also discussed.

Matèries

Geofísica, Ozó atmosfèric, Canvi climàtic, Atlàntic, Oceà, Climatologia, Hivern, Estiu, Mediterrània (Regió)

Matèries (anglès)

Geophysics, Atmospheric ozone, Climatic change, Atlantic Ocean, Climatology, Winter, Summer, Mediterranean Region

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citació

OSSÓ CASTILLÓN, Albert, et al. Evidence for the influence of the North Atlantic Oscillation on the total ozone column at northern low latitudes and midlatitudes during winter and summer seasons. Journal of Geophysical Research. 2011. Vol. 116, num. D24122, pags. 1-12. ISSN 0148-0227. [consulted: 1 of July of 2026]. Available at: https://hdl.handle.net/2445/49257

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