challenges of natural hazards- Weather hazards- Global atmospheric circukation

Question 1

what is global atmospheric circulation?

Answer 1

The circulation of air due to pressure difference and suns energy difference.

Question 2

what is the atmosphere?

Answer 2

The layer of air around the earths surface which contains different gases such as oxygen, nitrogen, CO2 and water vapour…

Question 3

where are area of high pressure?

Answer 3

where air is sinking

Question 4

what are surface winds used for?

Answer 4

to transport heat and moisture

Question 5

how does wind travel>

Answer 5

high pressure to low pressure in a curved motion due to the earths rotation.

Question 6

What are the pressure belts?

Answer 6

Hadey, ferrel and polar

Question 7

how does atmospheric circulation affect climate and weather?

Answer 7

• at the equator:
  sun directly shines, warm air rises, lo pressure, causes cloud and rain to form as the air cools.
  Humid and rainy
• subtropics:
  Less concentrated sun, dry air sink, no clouds, cintrasting day and night weather
• climate at sub poar lattitudes:
  low pressure, cloudy and wet, not very warm as suns ray is not directed’

Question 8

what is the weather lime in the UK?

Answer 8

55degrees North which puts it between the cold air from the north and warm from the subtropics Cold polar air bring snowy and cold winters. Rising air causes clouds and rain and cause it to be wet and cloudy.

Question 9

What are teh surface winds and where are they found? (Trade winds, westerlies…)

Answer 9

• The trade winds: Blow from the subtropical high-pressure belts (30 degrees N and S) towards the Equator’s low-pressure zones and are deflected by the Coriolis force
• The westerlies: Blow from the sub-tropical high-pressure belts to the mid-latitude low areas, but again, are deflected by the Coriolis force
• The easterlies: Polar easterlies meet the westerlies at 60 degrees S