My name is Sandra. In this blog I will be explaining two graphs. In the first graph it shows temperature change from 1900c beginning from 1850 to 2020. The gray line shows hadley centre, the dark line shows natural climate data center and the dotted lines shows GISS. in the second graph it shows how the temperature has gone up from 1900 through the years of 2010. The dark line  with the circle in the middle represent rice models-2010. The very dark dotted line with the shaded square shows emf-22 models and the lines A1B, A2, B1 and B2 represents emissions. For example  graph two shows the global temperature increase from 1900c to 2100 to be between 1.8 and 4.0. These models are used to compare changes that may occur  in the following years.