A case study of extreme tropospheric ozone contamination in the tropics using in-situ, satellite and meteorological data
Since 1992, more than 150 radiosoundings have been performed from Reunion Island in the Indian Ocean in Southern tropics. On August 25, 1995, tropospheric ozone amounts of over 200 ppbv through the entire troposphere were encountered. Typical values during that period do not usually reach more than...
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| Veröffentlicht in: | Geophysical research letters 1999-05, Vol.26 (9), p.1287-1290 |
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| container_title | Geophysical research letters |
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| creator | Randriambelo, T. Baray, J. L. Baldy, S. Bremaud, P. Cautenet, S. |
| description | Since 1992, more than 150 radiosoundings have been performed from Reunion Island in the Indian Ocean in Southern tropics. On August 25, 1995, tropospheric ozone amounts of over 200 ppbv through the entire troposphere were encountered. Typical values during that period do not usually reach more than 80 ppbv. In order to explain these disturbances, we performed an analysis using satellite and ECMWF data. Results indicate that several mechanisms are working together, including photochemical effect of biomass burning associated with convection, and stratosphere‐troposphere exchange near the subtropical jet stream. Based on results shown in this paper, it is difficult to estimate the relative contribution of biomass burning and stratospheric intrusions. Quantitative estimates should stem from other chemical component measurements and from a more detailed dynamical analysis. |
| doi_str_mv | 10.1029/1999GL900229 |
| format | Article |
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Based on results shown in this paper, it is difficult to estimate the relative contribution of biomass burning and stratospheric intrusions. Quantitative estimates should stem from other chemical component measurements and from a more detailed dynamical analysis.</description><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Chemical composition and interactions. Ionic interactions and processes</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Meteorology</subject><subject>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</subject><subject>Pollution</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqFkUFv1DAQhSMEEkvhxg_wAXFqYGwncXwsVdkiRaCiIo7WxBm3hmy82I7Y5deTkgo4wWlGo--9mdEriuccXnEQ-jXXWm87DSCEflBsuK6qsgVQD4sNgF56oZrHxZOUvgCABMk3xeGMWUzEUp6HIwuO0SFH2hHLMexD2t9S9JaFH2EiZsOUcecnzD5MzE8s366ct4nNyU83y7BMPs-nLGGmcfSZGE4D21GmEMMYbrzFkQ2Y8WnxyOGY6Nl9PSk-vb24Pr8suw_bd-dnXWmrSral6pu2b_vBWXC9kq2uB0FaQY0IlaOq4VIowoE0OIm1HWrpFHLXikb1YEmeFC9X330M32ZK2ex8ssttOFGYk-EtBy7q9v-gklzoGhbwdAVtDClFcmYf_Q7j0XAwdzmYv3NY8Bf3vpiW513Eyfr0R6O0rn-tFyv23Y90_Kel2X7s-BLfnahcRT5lOvwWYfxqGiVVbT6_35o3l_qqu64rcyV_AjVpp24</recordid><startdate>19990501</startdate><enddate>19990501</enddate><creator>Randriambelo, T.</creator><creator>Baray, J. 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L.</creatorcontrib><creatorcontrib>Baldy, S.</creatorcontrib><creatorcontrib>Bremaud, P.</creatorcontrib><creatorcontrib>Cautenet, S.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Randriambelo, T.</au><au>Baray, J. L.</au><au>Baldy, S.</au><au>Bremaud, P.</au><au>Cautenet, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A case study of extreme tropospheric ozone contamination in the tropics using in-situ, satellite and meteorological data</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>1999-05-01</date><risdate>1999</risdate><volume>26</volume><issue>9</issue><spage>1287</spage><epage>1290</epage><pages>1287-1290</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>Since 1992, more than 150 radiosoundings have been performed from Reunion Island in the Indian Ocean in Southern tropics. On August 25, 1995, tropospheric ozone amounts of over 200 ppbv through the entire troposphere were encountered. Typical values during that period do not usually reach more than 80 ppbv. In order to explain these disturbances, we performed an analysis using satellite and ECMWF data. Results indicate that several mechanisms are working together, including photochemical effect of biomass burning associated with convection, and stratosphere‐troposphere exchange near the subtropical jet stream. Based on results shown in this paper, it is difficult to estimate the relative contribution of biomass burning and stratospheric intrusions. Quantitative estimates should stem from other chemical component measurements and from a more detailed dynamical analysis.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/1999GL900229</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Geophysical research letters, 1999-05, Vol.26 (9), p.1287-1290 |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Wiley Online Library - AutoHoldings Journals; Wiley-Blackwell AGU Digital Library; EZB-FREE-00999 freely available EZB journals; Wiley Online Library (Open Access Collection) |
| subjects | Applied sciences Atmospheric pollution Chemical composition and interactions. Ionic interactions and processes Earth, ocean, space Exact sciences and technology External geophysics Meteorology Pollutants physicochemistry study: properties, effects, reactions, transport and distribution Pollution |
| title | A case study of extreme tropospheric ozone contamination in the tropics using in-situ, satellite and meteorological data |
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