Temperature

Question 1

Bowen Ratio B

Answer 1

B = H /L x E

where H is sensible heat transferred to the atmosphere.

L = Latent heat
E= Evaporation rate

Question 2

High Bowen Ratio

Answer 2

Lots of sensible heating, not much evaporation

Question 3

Where might you find high Bowen Ratio

Answer 3

Deserts

Question 4

What effect does a high Bowen Ration have on temperatures?

Answer 4

Sensible heat is used to raise the temperature. Temperatures rise more quickly and to a higher maximum

Question 5

Lower Bowen Ratio

Answer 5

Lots of evaporation

Question 6

Where might you find a Lower Bowen Ratio

Answer 6

Ocean or Lake

Question 7

What effect does a lower Bowen Ratio have?

Answer 7

Much of available energy is used in evaporation.

Temperature rises more slowly and maximum will be lower.

Question 8

Typical Bowen Ratios

Answer 8

0.1 over tropical ocean
0.6 over temperate forest
4 over semi-arid areas
10 over deserts

Question 9

Sensible heat

Answer 9

Heat that causes a change in temperature (can sense this) with no change in its phase. Transferred by virtue of temperature difference (e.g. conduction/convection)

Question 10

Latent heat

Answer 10

is the energy absorbed or released from a substance during a phase change. Temperature remains the same (e.g. 0 C or 100 C)