Notice: Undefined property: stdClass::$section_nr in /srv/www/html/sustainabledevelopment.un.org/root/content.php on line 285 In May 2013 carbon concentration reached 400 parts per million (ppm) at observatory in Hawaii. Global carbon concentration is supposed to reach 400 ppm soon. It was 315 ppm in 1958, 375 ppm in 2000 (UNEP, 2012). While it increased by 60 ppm in 42 years till 2000, in the last decade it rose by 25 ppm. The reasons are easy to understand. The global emission was 40 gigatonnes(GT) of carbon dioxide (CO2) e in 2000, which rose to 50 GT of CO2 in 2011, rising by 25 percent in ten years! The current emission levels need to be brought down to 44 GT of CO2 by 2020, to contain a rise in temperature below 2 degrees.
Against this rapid increase in climate change, global efforts have been lackluster. In the business as usual scenario, the total emissions in 2020 will be 58 GT. Based on the pledges that have been made by the countries in the United Nations Framework Convention on Climate Change (UNFCCC) , and the Kyoto Protocol in the best case scenario the emissions in 2020 will be 52 GT, in the worst case scenario (low ambition levels) it will be 57 GT. This is only 1 GT less than business as usual (BAU) scenario and far above the threshold limit of 44 GT. Obviously, this is not enough to keep the rise in temperature below 2 degrees Celsius. This calls for wartime efforts to reduce the emissions.
.:. Sustainable Development Knowledge Platform