{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Lab02-03Answers - Solutions to Homework from Homework...

This preview shows pages 1–3. Sign up to view the full content.

Solutions to Homework from Homework: Exercises for Weather and Climate , Lab. 2–3 EES 108: Earth and Atmosphere Due Tues. Sept. 6 Lab 2, #9 Following the patterns provided below, draw a simple series of sketches for solar noon on June 21 at a site at 30 N and on December 22 and June 21 for a site at 60 N. Indicate the zenith angle, solar angle, and beam spreading in each diagram. Note that you will need to change the scale of the beam for December 22 at 60 N. Answer: 9. 60˚ N Dec. 22 60° N June 21 10. Summer temperature is highest because solar radiation is more concentrated. During the winter, it’s cooler as the solar beam is spread over a greater surface area. 11. There is a much greater seasonal range in daylight hours in polar regions than in tropical regions. 12. 30˚ N 60˚ N June solstice 14 18 Equinoxes 12 12 December solstice 10 6 13. 60° N 14. The change in daylight hours is greatest near the equinoxes (when solar declination changes are greatest) and smallest near the solstices. 15. a. At 30° N, the sun rises due east and sets due west on the equinoxes. Between the March 1 unit Sun’s rays Sun angle 83.5 ° Zenith angle 6.5 ° 1.01 units 1 unit Sun’s rays 8.83 units Zenith angle 83 1 / 2 ° Sun angle 6 1 / 2 ° 1 unit Sun’s rays Zenith angle 36 1 / 2 ° 1.24 units Sun angle 53 1 / 2 ° Lab 2, #10 Given these sketches, explain why sun angle causes seasonal tempearture changes in the mid-latitudes. Answer: Summer temperature is highest because solar radiation is more concentrated. Dur- ing the winter, it’s cooler as the solar beam is spread over a greater surface area.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
EES 108 Answers to Homework for Lab. 2 3 Due Sept. 6 To emphasize, with more detail than you needed to give for your answer: in the winter, the solar radiation at 60 N is spread over seven times as much area as in the summer ( 8 . 83 / 1 . 24 = 7 . 12 ), so it’s only one seventh as intense. That’s why it’s so much colder in December than in June.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 5

Lab02-03Answers - Solutions to Homework from Homework...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online