{"id":1625,"date":"2009-08-31T10:30:50","date_gmt":"2009-08-31T10:30:50","guid":{"rendered":"http:\/\/ietransfer.wpengine.com\/?p=1625"},"modified":"2009-08-31T10:30:50","modified_gmt":"2009-08-31T10:30:50","slug":"laughing-gas","status":"publish","type":"post","link":"https:\/\/inspiredeconomist.com\/articles\/laughing-gas\/","title":{"rendered":"Laughing Gas: The Latest Environmental Threat"},"content":{"rendered":"

\"TheNitrous oxide, more commonly known at your dentist\u2019s office as laughing gas, is now the most prevalent man-made substance damaging the ozone layer<\/a>. And it\u2019s a greenhouse gas. Sadly, the joke\u2019s apparently on us.<\/h4>\n

In a report<\/a> published in Science<\/em> on Friday, scientists at the National Oceanic and Atmospheric Administration<\/a> (NOAA<\/a>) located in\u00a0Boulder,\u00a0Colorado, have calculated the ozone-depleting potential<\/a> (ODP) of the common gas nitrous oxide<\/a>, N2<\/sub>O, and come to the conclusion that this previously ignored, naturally occurring substance is now a serious threat and likely will be for the rest of the century. About two-thirds of the nitrous oxide evolved every year comes from bacteria breaking down nitrogen-containing compounds. The other one-third is emitted by a large variety of human activities, including agricultural fertilization, livestock manure, the burning of both fossil and biofuels<\/a>, and other industrial processes. They are increasing the atmospheric concentration of N2<\/sub>O by 1% every 4 years<\/a> and have been essentially since the beginning of the Industrial Revolution.<\/p>\n

There is some good news to accompany the words of doom and gloom, however. \u201cThe main reason for the large role of nitrous oxide<\/a> is the success of the Montreal Protocol in that it has reduced the emissions of CFCs and other ozone-depleting chemicals,\u201d said lead author A.R. Ravishankara. The Montreal Protocol<\/a> is the international treaty of 1987 that aimed to protect the ozone layer by phasing out and banning known ozone-depleting chemicals such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs<\/a>).<\/p>\n

However, the reduction of CFCs is something of a double edged sword. The chlorine<\/a> of CFCs and HCFCs competes with the nitrogen<\/a> of N2<\/sub>O in the stratosphere; as the levels of chlorine<\/a> decrease due to the reduction of CFCs according to international agreements, the remaining nitrogen<\/a> from N2<\/sub>O will become about 50% more potent. N2<\/sub>O itself has an ODP comparable to that of HCFCs. And while the ODPs of the gases are similar, nitrous oxide is significantly more abundant that CFCs ever were. Globally, humans released just over 1 million tonnes of CFCs into the atmosphere at their peak. Today, we are releasing approximately 10 million tonnes of N2<\/sub>O, and that figure does not take into account the amount of the gas produced by natural sources.<\/p>\n

The other bit of good news is that the Environmental Protection Agency (EPA<\/a>) is already considering what to do about nitrous oxide emissions because of its role in global warming. In April, they declared six gases<\/a>, including CO2<\/sub><\/a> and N2<\/sub>O, pollutants that endanger public health, subjecting them to regulation under the Clean Air Act, and announced on Thursday that they are working on an emissions reporting system for all six.<\/p>\n

Scientists have been aware of the ozone-depleting effects of nitrous oxide as well as its greenhouse gas status since the 1970s \u2014 when they were conducting research into the environmental effects of supersonic planes. \u201cNitrous oxide is kind of the forgotten gas,\u201d according to Don Wuebbles<\/a> of the University of Illinois at Urbana-Champaign, a scientist not involved in the report but who invented the method of quantifying a chemical\u2019s ODP. \u201cIt was always thought of as a natural thing,\u201d he said. Focused on the detrimental environmental effects of CFCs and CO2<\/sub><\/a>, \u201cpeople have forgotten that [nitrous oxide has] been increasing.\u201d<\/p>\n

Photo Credit: woodleywonderworks<\/a> at flickr<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Nitrous oxide, more commonly known at your dentist\u2019s office as laughing gas, is now the most prevalent man-made substance damaging the ozone layer. And it\u2019s a greenhouse gas. Sadly, the joke\u2019s apparently on us. In a report published in Science on Friday, scientists at the National Oceanic and Atmospheric Administration (NOAA) located in\u00a0Boulder,\u00a0Colorado, have calculated 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Wojnovich","author_link":"https:\/\/inspiredeconomist.com\/author\/wojnovld3\/"},"uagb_comment_info":2,"uagb_excerpt":"Nitrous oxide, more commonly known at your dentist\u2019s office as laughing gas, is now the most prevalent man-made substance damaging the ozone layer. And it\u2019s a greenhouse gas. Sadly, the joke\u2019s apparently on us. In a report published in Science on Friday, scientists at the National Oceanic and Atmospheric Administration (NOAA) located in\u00a0Boulder,\u00a0Colorado, have calculated…","_links":{"self":[{"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/posts\/1625"}],"collection":[{"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/users\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/comments?post=1625"}],"version-history":[{"count":0,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/posts\/1625\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/media\/1626"}],"wp:attachment":[{"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/media?parent=1625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/categories?post=1625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/tags?post=1625"},{"taxonomy":"adace-sponsor","embeddable":true,"href":"https:\/\/inspiredeconomist.com\/wp-json\/wp\/v2\/adace-sponsor?post=1625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}