2.6 Elevation & Climate

1. 2.6 Elevation & Climate • Understand the relationship between elevation & climate • Chapter 4 p. 71

2. 2.6.1 Define Elevation p. 71 • Elevation = height of a region above sea level • Figure 1.6 p. 8 shows cross section of Canada Winnipeg 239 m 4000 m Sea Level

3. DID YOU KNOW? • Air temperature decreases 2oC for every 300m increase in elevation • IT’S TRUE!! In fact, the higher up we go; the colder it gets; hence snow on mountain tops

4. 2.6.2 Describe the relationship between the elevation of a point and its temperature and precipitation. See Figure 4.19 – Textbook…what is the relationship between temperatures and elevation???? Stop La Paz & Rio de Janeiro have similar dist. from ocean & similar latitude. La Paz is much colder because of higher elevation . • La Paz, Bolivia • Elevation = 3600m • Coldest month = 9oC • Rio de Janeiro, Brazil • Elevation = 61m • Coldest month= 25oC

5. 2.6.2 Describe the relationship between the elevation of a point and its temperature and precipitation. • Relief Rainfall • Windward Side of mountain • Leeward Side of Mountain • Rain shadow – What side?

6. Relief Rainfall – Recap!!! Elevation and Precipitation • Windward = side of a mountain wind blows toward • Leeward = side of mountain opposite from windward • Rain shadow = region on leeward side of mountain that receives little precipitation because most rain dropped on windward side.

7. Vancouver Prince George wind 2.6.3 Analyze the relationship between temperature and precipitation of a point and its location relative to a mountain system. • Cities higher up in a mountain have colder temperatures • Cities on leeward side have little rain • Cities on windward side have more rain • Match the city to the data • 1113mm rain & 0oC coldest month • 628mm rain & -12oC coldest month

8. 2.6.3 Practice • #37 p. 71 • #40 a & b p. 72 • #41 a & b p. 72