Global Warming essay

According to the report, the largest human influence is the emission of greenhouse gases for example methane, carbon dioxide, and nitrous oxide. CO2 is a heat-trapping gas that is released through either human activities, for instance, the burning of fossil fuel and deforestation or through natural processes such as volcanic eruption and respiration. The graph below shows CO2 levels in the last three glacial cycles. Data source; Reconstruction from ice cores Credit: NOAA In the report, a summarized climate model projection indicated that in the 21st century, depending on the emission of these greenhouse gases, the global surface temperature may rise from 0. 3 to 1. Shrinking ice sheets- between 1993 and 2016, Gravity Recovery and Climate Experiment (NASA) reports that Greenland’s ice cover has reduced by an average of 281 billion tons and Antarctica an average of 119 billion tons.