3234 - Urban Climate Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Define urban climate

A

The small scale variations in temperature, precipitation, humidity, wind speed and evaporation than occur in a particular environment e.g an urban area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define urban dome

A

The urban microclimate is sometimes called an urban dome. This is the area within which the weather is different from that of the surrounding rural areas. The two levels in the dome is the urban canopy and the urban boundary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define albedo

A

The reflectivity of a surface. It is the ratio between the amount of incoming insulation and the amount of energy reflected back into the atmosphere. Light surfaces reflect more than dark surfaces and so have a greater albedo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What kind of surface has a low albedo

A

A dark surface that absorbs light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What kind of surface has a high albedo

A

A lighter colour that reflects light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How is albedo expressed

A

On a scale from 0-1
0= total absorption
1= complete reflecting/ance of solar radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the albedo of grass

A

0.25-0.30

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Albedo of tar/ gravel

A

0.03-0.18

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Albedo of highly reflective roof

A

0.60-0.70

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does a high albedo mean

A

The surface reflects the majority of the radiation that hits it and absorbs the rest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does a low albedo mean

A

A low albedo means a surface reflects a small amount if the incoming radiation and absorbs the rest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly