Temperature Over Time  Investigation 1
http://www.ces.fau.edu/nasa/module3/temperaturechangeindustrial/investigation4.1.php
How Did Temperature Change Before the Industrial Revolution
Exploration 1: Antarctica Ice Cores and Temperature Over the 800,000 Years
Use the interactive, timeseries graphing tool to answer the following questions.
1. Look at the temperature anomaly data and describe the general pattern that you see over the past
800,000 years.
2. Approximately how many glacial periods do you observe over the past 800,000?
3. What is the approximate time period between each glacial period?
4. The last ice age began about 2.75 million years ago, but according the timeseries graph, approximately when did the last major glacial period begin?
5. Are we currently in a glacial or interglacial period? Approximately, when did this most recent period of climate begin?
6. Calculate the estimated rate of change for three sequential glacialinterglacial periods. To do this, zoom in on the time series graph to the glacialinterglacial periods listed in the table below. In the table you are given a one thousand year range to examine. You will look at all points in that thousand year period by running your cursor over the points. You will note the temperature anomaly for each point and then estimate the average for that range. Complete the table below by answering the following:

What is the range of years for each glacialinterglacial period listed?

What is the temperature anomaly estimate for this glacial period?

What is the temperature anomaly estimate for this interglacial period?

Subtract your glacial period estimate from your interglacial period estimate and divide by the range.
___T_{2} – T_{1}___
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