Today 12E: Short test on microclimates Quick recap on UHI so far Vancouver Heat Island – extend the case- study from the book Review exams individually

MICROCLIMATES

Upland Regions Per 1000m temperature drops by how much? What difference does height make to rainfall? What difference does altitude make to sunshine hours? Does more or less rain fall on the leeward side of a mountain? Why are valleys often cooler than the hills that surround them?

Coastal Regions Why does the wind often change direction on coastal areas? Why does fog disappear by midday normally? (or soon after)

Forests Why don’t areas of woodland have high wind speeds? Why are these areas cooler?

Microclimate definition Sunshine Duration - 5 to 15% less Annual Mean Temperature - 0.5 to 1.0°C higher Winter Maximum Temperatures - 1 to 2°C higher Occurrence of Frosts - 2 to 3 weeks fewer Relative Humidity (in Winter) - 2% lower Relative Humidity (in Summer) - 8 to 10% lower Total Precipitation - 5 to 10% more Number of Rain Days - 10% more Number of Days with Snow - 14% fewer Cloud Cover - 5 to 10% more Occurrence of Fog (in Winter) - 100% more Amount of Condensation Nuclei - 10 times more