{"id":1371,"date":"2016-06-08T14:39:00","date_gmt":"2016-06-08T14:39:00","guid":{"rendered":"http:\/\/glacio-live.ap4net.at\/index.php\/2016\/06\/08\/long-term-study-at-sonnblick-glaciers\/"},"modified":"2020-02-22T12:49:44","modified_gmt":"2020-02-22T12:49:44","slug":"long-term-study-at-sonnblick-glaciers","status":"publish","type":"post","link":"https:\/\/glacio-live.ap4net.at\/index.php\/2016\/06\/08\/long-term-study-at-sonnblick-glaciers\/","title":{"rendered":"Long-term study at Sonnblick glaciers: explicit reduction of air pollutants in the snowpack"},"content":{"rendered":"<div class=\"kg-card-markdown\">\n<p>A <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1352231016301534\">study<\/a> from ZAMG, TU Wien, University of Graz and IIASA showed a distinct reduction of Sulfate and Nitrate ion deposition in snowpack samples over the last 30 years (1983-2014). The total ion concentration declined by 25% whereas single ions such as Nitrate and Sulfate decreased much more by 30% and even 70%, respectively. Dissolved ions are stored in the snowpack and released during snow melt. The rapid release of these pollutants acidifies the meltwater and can induce an \u201cacid shock\u201d in surrounding ecosystems like streams, rivers and soils. The reduction of the deposition of acidifying ions, such as Sulfate and Nitrate, reflects the successful emission reductions of their precursor gases SO<sub>2<\/sub> and NO<sub>x<\/sub>, mainly originating from anthropogenic sources like traffic and industry.<br \/>Both ions show a clear seasonality with elevated spring concentrations compared to fall snow, reflecting the beginning of vertical mixing in the atmosphere in spring.<\/p>\n<\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"402\" src=\"http:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/nitrat_1000.jpg\" alt=\"\" class=\"wp-image-1485\" srcset=\"https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/nitrat_1000.jpg 1000w, https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/nitrat_1000-300x121.jpg 300w, https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/nitrat_1000-768x309.jpg 768w\" sizes=\"(max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" \/><figcaption>Nitrate in the snowpack at Sonnblick.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1000\" height=\"402\" data-src=\"http:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/sulfat_1000.jpg\" alt=\"\" class=\"wp-image-1486 lazyload\" data-srcset=\"https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/sulfat_1000.jpg 1000w, https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/sulfat_1000-300x121.jpg 300w, https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/sulfat_1000-768x309.jpg 768w\" data-sizes=\"(max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1000px; --smush-placeholder-aspect-ratio: 1000\/402;\" \/><figcaption>Sulfate in the snowpack at Sonnblick.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1000\" height=\"666\" data-src=\"http:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/snowpit_sahara_dust_gok_an_1000.jpg\" alt=\"\" class=\"wp-image-1487 lazyload\" data-srcset=\"https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/snowpit_sahara_dust_gok_an_1000.jpg 1000w, https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/snowpit_sahara_dust_gok_an_1000-300x200.jpg 300w, https:\/\/glacio-live.ap4net.at\/wp-content\/uploads\/2020\/02\/snowpit_sahara_dust_gok_an_1000-768x511.jpg 768w\" data-sizes=\"(max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1000px; --smush-placeholder-aspect-ratio: 1000\/666;\" \/><figcaption>Density and temperature measurements in a snow pit with a Sahara dust layer at 120 cm (photo: A. Neureiter).<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A study from ZAMG, TU Wien, University of Graz and IIASA showed a distinct reduction of Sulfate and Nitrate ion deposition in snowpack samples over &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/glacio-live.ap4net.at\/index.php\/2016\/06\/08\/long-term-study-at-sonnblick-glaciers\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Long-term study at Sonnblick glaciers: explicit reduction of air pollutants in the snowpack&#8221;<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":1489,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"class_list":["post-1371","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ghost"],"_links":{"self":[{"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/posts\/1371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/comments?post=1371"}],"version-history":[{"count":1,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/posts\/1371\/revisions"}],"predecessor-version":[{"id":1488,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/posts\/1371\/revisions\/1488"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/media\/1489"}],"wp:attachment":[{"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/media?parent=1371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/categories?post=1371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/glacio-live.ap4net.at\/index.php\/wp-json\/wp\/v2\/tags?post=1371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}