<![endif] [if lt IE 7]> <p class="browsehappy">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p> <![endif] Bloomberg the Company Bloomberg Anywhere Login Methodology NASA's Model Researchers who study the Earth's climate create models to test their assumptions about the causes and trajectory of global warming. Around the world there are 28 or so research groups in more than a dozen countries who have written 61 climate models . Each takes a slightly different approach to the elements of the climate system, such as ice, oceans, or atmospheric chemistry. The computer model that generated the results for this graphic is called "ModelE2," and was created by NASA's Goddard Institute for Space Studies (GISS) , which ...