A contrast.

Hello everyone I'm Julien, and today i will be comparing two graphs from "The Climate Casino" a book written by William Nordhaus. I'm doing this because summarizing visual information is important and it involves something called quantitative reasoning, a skill required for my English class.

 I will be tackling the graphs talking about Greenland and its ice sheet.On page 52 we can see figure 10 a graph telling us the historical temperature estimated for Greenland. This graph is to illustrate us the equilibrium that the Greenland has maintained for the last 7,000 years. The graph is represented on the bottom by 5 units, each unit representing 10 thousand years, and on the top left side it shows the temperature, the line in the middle that goes across the graph, shows the imbalance of the temperature for more than 40,000 years, and over the last 7,000 years the fluctuation is minimum.

The other graph I'm going to write about is the graph located on page 62, this graph shows the tipping point for the Greenland ice sheet. This figure shows the response of the Greenland ice sheet to different locations. On the bottom side of the graph we can see 11 units going from 0 to 10, each unit representing a change in temperature. On the left side of the graph we can see the "Volume (% present)", this side has 6 units each representing 20 % starting from 0. On the middle of the graph we can see a line that starts at 100% located at the top of the graph going from left to right, this means that every time the temperature rises volume of the ice sheet decreases gradually, but it reaches its tipping point, the point where melting is irreversible, at 6 C global temperature rise, this means that the ice sheet will melt in just a matter of time regardless of what we do. This will contribute to the sea level rise because we talked in class before that when ice sheets start to melt the sea level rises.