Atmospheric Sciences 336 - Spring 1998
Weather, Climate and Society

Second Exam - April 22, 1998

Please answer only 10 of the following 12 questions. All questions carry equal weight. Answers should be 1 to 3 complete sentences and should fit in the space provided.

  1. The picture below shows the prevailing winds on the surface of the Earth. What are these wind systems called? What is the dominant direction (upward or downward) of the vertical motion at the latitudes labeled A, B, and C on that same picture?

  2. What are the two modes of operation of a weather radar? Name two weather forecasting applications of this meteorological instrument and how they benefit human populations.

  3. Name two methods of weather modification currently in use or that have been used in the past.

  4. What ocean current plays an important role in determining the climate of Western Europe? How was this current modified during the Younger Dryas event?

  5. How do volcanic eruptions affect the amount of solar radiation received at the Earth's surface? What is the initial climatic effect of these eruptions?

  6. Who was Milutin Milankovitch and what is his contribution to the theory of the Ice Ages?

  7. Name two reasons why scientists are interested in studying the climates of the past (aside pure scientific curiosity).

  8. Name three types of climate information that the analysis of ice cores provides.

  9. What are the two Epochs of the Quaternary Period and when did they occur? What kind of climate best describes these two epochs?

  10. What kind of climate made the migration of ancient populations from Asia to N. America possible? How was the migration accomplished?

  11. What were the main changes in climate at the end of the last glacial period and how did they impact human populations?

  12. Who were the Natufians (where did they live and when)? What kind of climate forcing is believed to have made them start growing their own food?


Andrea Hahmann
1999-04-07