{"id":11,"date":"2026-10-02T11:49:50","date_gmt":"2026-10-02T10:49:50","guid":{"rendered":"https:\/\/mapdow.com\/?p=11"},"modified":"2026-10-02T11:49:50","modified_gmt":"2026-10-02T10:49:50","slug":"n%e2%82%82o-atmospheric-concentration-336-ppb-in-2024","status":"publish","type":"post","link":"https:\/\/mapdow.com\/?p=11","title":{"rendered":"N\u2082O Atmospheric Concentration: 336 ppb in 2024"},"content":{"rendered":"<p>Global atmospheric monitoring networks, including NOAA&#8217;s Global Monitoring Laboratory, recorded an atmospheric N\u2082O concentration of approximately 336.0 parts per billion (ppb) in 2024 \u2014 the highest level in at least 800,000 years of ice core records.<\/p>\n<h2>Historical Trend<\/h2>\n<p>Pre-industrial N\u2082O concentration was approximately 270 ppb. The current rate of increase is about 1.0\u20131.3 ppb per year, driven by agricultural emissions (67%), industrial sources (10%), and combustion (15%).<\/p>\n<div class=\"chem-data-box\">\n<div class=\"label\">2024 Global Mean<\/div>\n<div class=\"value\">336.0 ppb (\u00b10.1)<\/div>\n<\/div>\n<h2>Measurement Methods<\/h2>\n<p>Atmospheric N\u2082O is monitored using gas chromatography with electron capture detection (GC-ECD) and infrared spectroscopy at stations including Mauna Loa (Hawaii), Alert (Canada), Cape Grim (Australia), and over 50 other global sites in the WMO Global Atmosphere Watch network.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Global atmospheric monitoring networks, including NOAA&#8217;s Global Monitoring Laboratory, recorded an atmospheric N\u2082O concentration of approximately 336.0 parts per billion (ppb) in 2024 \u2014 the\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-11","post","type-post","status-publish","format-standard","hentry","category-environment"],"_links":{"self":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/posts\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11"}],"version-history":[{"count":0,"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/posts\/11\/revisions"}],"wp:attachment":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}