Reka

géographe cartographe information designer - rêveur utopiste et partageur de savoirs

  • Climate Alliance Mapping Project

    https://climatealliancemap.org/about/project-background

    https://climatealliancemap.org/map

    n 2009, scientists and world leaders agreed that the increase in global temperature should be held below 2°C compared to pre-industrial levels in order to prevent dangerous climate change. And in the 2015 Paris Climate Agreement, country governments agreed to hold global temperatures below the 2°C target and pursue the more ambitious goal of 1.5°C. In 2012, a study by the International Energy Agency concluded that no more than 1/3 of known fossil fuel reserves could be used before 2050 if the world is to limit global temperature increase to 2°C. Therefore, at least 2/3 of known fossil fuel reserves must remain in the ground.

    In a recent study in Nature, McGlade and Elkins (2015) use economic modeling to develop an argument about where and which types of fossil fuels should remain in the ground in order to meet the target of 2 °C. Considering different emissions scenarios and the projected costs of energy resources, they conclude that globally, a third of oil reserves, half of gas reserves and over 80 percent of current coal reserves should remain unused from 2010 to 2050. Their model is based on the economically-optimal solution, which maximizes ‘social welfare’ (or the sum of consumer and producer surplus).

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