2-7: Paleoclimate; Ice Core and Lake Sediment Records

Importance of this Unit to the Course

We have seen in previous units that climate models can give simulations of past as well as present and future climates. But we don't have temperature measurements going back more than about 150 years, so we rely on "proxy" measurements of temperature and precipitation to provide evidence climatic conditions hundreds and thousands of years ago. This will allow us to test climate models for accuracy and also offer a better perspective of current climate conditions and how much they might be expected to change if the future were to be similar to the past.


Preparation for Discussion (You must complete this section before class.)

  1. Read the summary information. (Print text for offline review; images only.)
  2. Take the Quiz
  3. Review additional reading material (this material is not covered in the quiz, but offers more ideas for online discussion)
    • None

Discussion (online / face-to-face) (See your portfolio for due dates and times)

A major component of the course is participation in the online dialog. The following types of comments are required:

The following may be used as discussion starters for the online dialog:

Additional Reading