1. Lesson objectives: To know how we can measure weather conditions What is the difference between weather and climate? Use the dictionaries to find definitions

2. Microclimates Microclimate refers to the climate or temperature differences within a small area e.g. over a few meters

3. Which areas of the school do you think have different climates? 1.Level 4 ‘garden’ 2.Into the blue

4. Look at the equipment What could it measure? What units is it measured in?

5. Look at the equipment What could it measure? What units is it measured in? Today we can measure: 1.Wind Speed 2.Wind Direction 3.Temperature 4.Cloud Cover How would you measure these to get accurate, detailed readings?

6. Cloud Cover - Oktas

7. What is the most efficient way to work collaboratively? Photographer ? Someone to measure temperature? Someone to measure wind speed? Someone to measure wind direction? Cloud cover ? Data recorder ? Explanations/ Location notes? What comments could you write about in the final row? What factors might effect the microcimate data?

8. Home Learning Draw a picture of the equipment you used Write a method for how you collected the results You could lay this out as a table… Data measuredEquipmentMethodology (location, time etc.) Why I did this? Limitations of this method A/A* Extension – Discuss how the data collected compares to that recorded by the Hong Kong Observatory for today in and around Pokfulam.

9. Example Methodology for Wind Speed 1.Select a suitable location and find the wind direction by holding a wind vane in the air above your head. 2.Hold an anemometer above your head for several seconds, pointing into the wind. 3.Record the wind speed shown on the screen in a table. 4.Repeat this test three times and find the mean. 5.Repeat steps 1-4 at different locations around the area to find the mean wind speed at a place. Why I did this? The wind speed is measured at head height to avoid disturbances caused by obstructions such as the ground or walls. These obstructions would likely slow the wind speed down. As the wind can change suddenly it is important to hold the anemometer for several seconds before recording the speed. Several readings are taken in order to be accurate when finding the mean speed. If we want to find the mean speed in an area, different locations have to be chosen at a range of altitudes and positions (open and enclosed). This will then give a fair indication of the mean wind speed in a given area. What is missing from this answer?....Why the anemometer is pointed into the wind!

10. Equipment Anemometer

11. Thermometer

12. Wind vane