{"id":102,"date":"2016-09-24T03:00:52","date_gmt":"2016-09-24T03:00:52","guid":{"rendered":"http:\/\/ciresblogs.colorado.edu\/southpoleozone2016\/?p=102"},"modified":"2016-09-24T03:00:52","modified_gmt":"2016-09-24T03:00:52","slug":"wmos-first-report-on-the-2016-antarctic-ozone-hole-development","status":"publish","type":"post","link":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/2016\/09\/24\/wmos-first-report-on-the-2016-antarctic-ozone-hole-development\/","title":{"rendered":"WMO’s first report on the 2016 Antarctic ozone hole development"},"content":{"rendered":"
\n
<\/div>\n
<\/div>\n
\u00a0\"screen-shot-2016-09-23-at-2-38-59-pm\"<\/div>\n
<\/div>\n
\n
<\/div>\n
\n

By Irina Petropavovskikh,\u00a0CIRES and NOAA scientist, from Boulder, September 23<\/strong><\/p>\n<\/div>\n

\n

This morning’s e-mail arrived\u00a0with the first of the World Meteorological Organization’s (WMO) 2016\u00a0Antarctic\u00a0Ozone Bulletins.\u00a0These bulletins discuss the\u00a0processes that affect formation of the ozone hole\u00a0and\u00a0the status of the ozone layer over the entire Antarctic continent<\/p>\n<\/div>\n<\/div>\n

<\/div>\n<\/div>\n
\n

Here’s a short excerpt from the\u00a0\u00a0Antarctic Ozone Bulletin no. 1, 2016, courtesy of\u00a0Dr. Geir O. Braathen,\u00a0Scientific Officer of the\u00a0Atmospheric Environment Research Division (AER)\u00a0Research Department (RES) at the World Meteorological Organization:<\/p>\n<\/div>\n

<\/div>\n
\n

“Satellite observations show that the area where total ozone is less than 220\u2009DU (\u201cozone hole area\u201d) has been significantly above zero since 7 August. This is a relatively early onset of ozone depletion and about ten days earlier than in 2015. The ozone hole area on 20 September was 21.8 million<\/em><\/em>km2\u00a0<\/sup><\/em>, whereas it was 26.1 million\u00a0<\/em>km2\u00a0<\/sup><\/em> on the same date in 2015. The date of the onset of ozone depletion varies considerably from one year to the next, depending on the position of the polar vortex and availability of sunshine after the polar night. In 2016, the vortex has been relatively perturbed and shifted somewhat away from the South Pole. This can explain the relatively early onset of ozone depletion in 2016.<\/em><\/p>\n<\/div>\n

<\/div>\n
Measurements with ground based instruments and with balloon sondes show clear signs of ozone depletion at all sites. In this issue data are reported from the following stations: Arrival Heights, Belgrano, Davis, D\u00f4me Concordia, Dumont d\u2019Urville, Halley, Kerguelen, Macquarie Island, Marambio, Mirny, Neumayer, Novolazarevskaya, Rothera, South Pole<\/strong>, Syowa, Ushuaia, Vernadsky and Zhongshan.<\/em>
\n As the sun continues to rise in the sky after the polar night ozone destruction will continue as long as there is active chlorine and bromine present. It is still too early to give a definitive statement about the development of this year\u2019s ozone hole and the degree of ozone loss that will occur. This will, to a large extent, depend on the meteorological conditions. However, the temperature conditions and the extent of polar stratospheric clouds together with the perturbed nature of the vortex so far indicate that the degree of ozone loss in 2016 will be less than that observed in 2015 and probably similar to that observed in 2013 and 2014.<\/em><\/div>\n
<\/div>\n
\n

WMO and the scientific community will use ozone observations from the ground, from balloons and from satellites together with meteorological data and modelling results to keep a close eye on the development during the coming weeks and months.”<\/em><\/p>\n

 <\/p>\n

 <\/p>\n

\"On

This plot (from the WMO Bulletin, Fig. 29)\u00a0\u00a0shows total ozone observations (Dobson instrument – red circles, ozonesonde – blue circles) from South Pole (mid July and to\u00a0\u00a0August 2016)\u00a0plus data from the three previous years\u00a0and long-term statistics based on the model (MSR-2, NILU). \u00a0These data show that total\u00a0ozone so far this season\u00a0is very near the long-term median.<\/em><\/p><\/div>\n

I would like\u00a0to share with you the link to the entire first Bulletin,\u00a0now available on the WMO’s website:\u00a0http:\/\/www.wmo.int\/pages\/prog\/arep\/gaw\/ozone\/index.htm<\/span><\/u><\/a><\/p>\n

 <\/p>\n<\/div>\n

 <\/p>\n

<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

\u00a0 By Irina Petropavovskikh,\u00a0CIRES and NOAA scientist, from Boulder, September 23 This morning’s e-mail arrived\u00a0with the first of the World Meteorological Organization’s (WMO) 2016\u00a0Antarctic\u00a0Ozone Bulletins.\u00a0These bulletins discuss the\u00a0processes that affect formation of the ozone hole\u00a0and\u00a0the status of the ozone layer over the entire Antarctic continent Here’s a short excerpt from the\u00a0\u00a0Antarctic Ozone Bulletin no. 1,… Read More<\/a><\/p>\n","protected":false},"author":94,"featured_media":119,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-102","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-content\/uploads\/sites\/55\/2016\/09\/picture-form-WMOBulletin1-e1474669450654.jpg","publishpress_future_action":{"enabled":false,"date":"2026-09-01 05:05:44","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/posts\/102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/users\/94"}],"replies":[{"embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/comments?post=102"}],"version-history":[{"count":24,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/posts\/102\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/posts\/102\/revisions\/129"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/media\/119"}],"wp:attachment":[{"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/media?parent=102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/categories?post=102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/southpoleozone\/wp-json\/wp\/v2\/tags?post=102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}