Lab 7 – Climate Change Proxy
Click on the data set to open in excel.
Graph the data following the instructions and then answer the following questions:
Step 1: Click on and highlight the two columns of data.
Step 2: Click on Insert and choose line graph from the choices of graphs
Step 3: Click on the title and provide a title for the graph: Ice Cover Caz Lake, choose chart elements and add the titles for the axis – Decade, Average # Days and then submit the excel file along with the answers to the following questions.
1) What is the trend in ice cover for Cazenoiva Lake over the last century?
2) Given what you learned about the physical and biological properties of water speculate: what other factors might cause the trends in ice cover data to change over the past century? (you may want to review the physical characteristics of water and terrestrial plants).
3) Which proxy do you think would be more accurate to determine global climate change? Why do you think this? Give reasons based on your research into what causes ice to melt on lakes, and what may impact blooming times from the discussions. Cite your sources for full credit.
