Three-Year Observations of Ozone Columns over Polar Vortex Edge Area above West Antarctica
Advances in Atmospheric Sciences, ISSN: 1861-9533, Vol: 38, Issue: 7, Page: 1197-1208
2021
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Most Recent News
Scientists observe rapid ozone fluctuations over the Antarctic polar vortex edge area
The polar vortex is a large area of upper-atmosphere cyclonic air circulation surrounding both poles. It is bounded by the polar jet stream and its associated cold air is usually confined to the polar regions. Within the Antarctic circle, and southern polar vortex, ozone quantities are the lowest, globally. A research published in Advances in Atmospheric Sciences, led by Dr. Luo Yuhan, correspondi
Article Description
Ozone vertical column densities (VCDs) were retrieved by Zenith Scattered Light-Differential Optical Absorption Spectroscopy (ZSL-DOAS) from January 2017 to February 2020 over Fildes Peninsula, West Antarctica (62.22°S, 58.96°W). Each year, ozone VCDs started to decline around July with a comparable gradient around 1.4 Dobson Units (DU) per day, then dropped to their lowest levels in September and October, when ozone holes appeared (less than 220 DU). Daily mean values of retrieved ozone VCDs were compared with Ozone Monitoring Instrument (OMI) and Global Ozone Monitoring Experiment 2 (GOME-2) satellite observations and the Modern-Era Retrospective analysis for Research and Applications Version 2 (MERRA-2) reanalysis dataset, with correlation coefficients (R) of 0.86, 0.94, and 0.90, respectively. To better understand the causes of ozone depletion, the retrieved ozone VCDs, temperature, and potential vorticity (PV) at certain altitudes were analyzed. The profiles of ozone and PV were positively correlated during their fluctuations, which indicates that the polar vortex has a strong influence on stratospheric ozone depletion during Antarctic spring. Located at the edge of polar vortex, the observed data will provide a basis for further analysis and prediction of the inter-annual variations of stratospheric ozone in the future.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85105271031&origin=inward; http://dx.doi.org/10.1007/s00376-021-0243-7; https://link.springer.com/10.1007/s00376-021-0243-7; https://link.springer.com/content/pdf/10.1007/s00376-021-0243-7.pdf; https://link.springer.com/article/10.1007/s00376-021-0243-7/fulltext.html; https://dx.doi.org/10.1007/s00376-021-0243-7; https://link.springer.com/article/10.1007/s00376-021-0243-7; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=6979810&internal_id=6979810&from=elsevier
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