Weather Hazards Flashcards

1
Q

wwhat are the 3 cells in the global atmospheric circulation model?

A

hadley, ferrel, polar

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2
Q

what is pressure like in the polar cell?

A

high, so there is cold air

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3
Q

what is the sun’s distribution of heat like at the poles?

A

spread out

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4
Q

what is global circulation of heat caused by?

A

heating air at the Equator and cooling air at the poles

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5
Q

what is the sun’s distribution of heat like at the equator?

A

concentrated

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6
Q

what happens to air pressure when cold air sinks?

A

air pressure rises

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7
Q

where do downwards trade winds point in the northern hemisphere?

A

South West(so upwards point opposite)

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8
Q

where do downwards trade winds point in the southern hemisphere

A

south east

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9
Q

what is the coriolis effect?

A

the earths surface rotates faster at the equator than at the poles (because its wider), so as air moves from the equator it curves

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10
Q

where are tropical storms usually found?

A

between the tropics, so between 5° and 30° N and S of the equator

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11
Q

in the northern hemisphere, tropical storms spin…

A

anti-clockwise

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12
Q

in the southern hemisphere, tropical storms spin…

A

clockwise

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13
Q

what scale do we use to classify tropical storms?

A

Saffir-Simpson scale

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14
Q

what are stages 1 and 2 of forming a tropical storm?

A

the sun’s insolation warms the tropics to 27°

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15
Q

what is stage 3 and 4 of forming a tropical storm?

A

this warmth causes warm air to rise through thermals, which cools as it rises and condenses to form clouds and rain (low pressure)

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16
Q

what is stage 5 of forming a tropical storm?

A

this cool air sinks, to form the eye (dry air)

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17
Q

what is stage 6 of forming a tropical storm?

A

air rushes in from areas of high pressure outside of the storm, which lowers pressure at the centre of the storm and creates winds

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18
Q

what is stage 7 of forming a tropical storm?

A

the whole storm rotates because of the earth’s spin

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19
Q

what are features of a tropical storm?

A

waters of 27°, low wind shear, not on land or on the equator, cumulonimbus clouds form, a calm eye

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20
Q

what impact may climate change have on the distribution of tropical storms?

A

more tropical storms further from the equator, because the increase in temperature will increase temperatures of oceans

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21
Q

what impact may climate change have on the intensity of tropical storms?

A

more higher category storms, as there is more energy in the storm’s system to fuel it, due to the hotter sea temperatures

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22
Q

what impact may climate change have on the frequency of tropical storms?

A

stay the same, as wind shear can tear the storms apart, or increase as waters get hotter

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23
Q

which airport was damaged in typhoon haiyan?

A

Tacloban airport, so it was difficult for aid to get in

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24
Q

how many fishing boats were destroyed because of the typhoon?

25
which diseases outbroke after Typhoon Haiyan?
Typhoid and Tetnus
26
what were some secondary effects of typhoon haiyan?
looting and violence, food shortages, power cut off
27
how many people died in Typhoon Haiyan?
7,400
28
what are some immediate responses from Typhoon Haiyan?
1,200 evacuation centres UK government sent shelter kits Philippines Red Cross delivered basic food aid
29
what are some long term responses from Typhoon Haiyan?
the UN donated financial aid, Oxfam supported re-establishing fishing boats, cash for work programmes helped clean debris
30
how can you monitor tropical storms?
satellites monitor cloud patterns associated with tropical storms
31
what is an example of monitoring tropical storms?
NASA
32
how can tropical storms be predicted?
supercomputers assess data to predict a location within 400km of the tropical storm
33
what is an example of predicting tropical storms?
National Hurricane Centre (USA)
34
how can protection decrease the effects of tropical storms?
reinforcing buildings, coastal flood defences, no build zones
35
what is an example of protection from tropical storms in the USA?
FEMA where the USA advises home owners how to protect land
36
how can planning reduce the risks of tropical storms?
disaster supply kits, evacuation plans
37
what is an example of a planning scheme to reduce the risks of tropical storms?
American National Hurricane Preparedness week
38
what is the definition of extreme weather?
weather significantly different from the average or usual weather pattern
39
what is our case study for extreme UK weather?
Beast from the East, 2018
40
how did the Beast from the East happen?
there was a change to the northern polar jet stream, which twisted and drew in cold air to the UK from the East
41
what are some social effects of the Beast from the East?
hospitals in Glasgow cancelled outpatient appointments, a baby was born on the A66 because parents could not reach the hospital
42
what is an economic effect of the Beast from the east?
insurance costs were above £10million and the weather cost the UK millions
43
what are some management strategies of the Beast from the East?
the met office established a red warning, stranded drivers were given blankets, greggs delivery van gave out food, rail passengers discouraged from travelling
44
air surface temperatures in the UK have risen by... in 100 years
45
the top ten warmest years for the UK...
since 1884 have occurred since 2002
46
what is some evidence for climate change from the Quaternary period until today?
average global sea level has risen between 10 and 20cm in the past 100 years
47
how do ice cores give evidence for climate change?
the carbon dioxide sequence in the cores give an idea of global temperatures
48
how do orbital changes account for climate change?
the elliptical axis of the sun heats the earth as the earth's tilt is towards the sun (closer to it)
49
how does solar output affect climate change?
there can be fluctuations in radiation emitted from the sun, so when more is emitted, the earth's temperature increases
50
how does volcanic activity affect climate change?
volcanic ash blocks rays from the sun in the short term, so the Earth's temperature decreases
51
how does deforestation affect climate change?
less trees means less of a carbon sink, and slash and burn culture. both keep co2 or release it into the atmosphere
52
how does agriculture affect climate change?
pesticides are produces with fossil fuels so co2 is released. when food is transported co2 is released. reaping lots of cows and dairy releases methane
53
how do fossil fuels affect climate change?
burning fossil fuels like coal gas and oil release co2
54
how does alternative energy production mitigate climate change?
changing to renewables decreases fossil fuels burning and co2 released
55
how does carbon capture and storage mitigate climate change?
reduces co2 into the atmosphere
56
what is an example of an international agreement which mitigates climate change?
Paris 2015 agreement agreed to limit global temperature rise by 1.5°
57
how can changes in agriculture adapt to climate change?
drought resistant crops can be grown, usually milder countries (UK) can grow more exotic crops
58
how can managing water supply adapt to climate change?
hotter temps mean less water, hosepipe bans, reservoirs conserve water
59
how can reducing risk from rising sea levels adapt to climate change?
coastal retreat and sea walls prevent economic damage from rising sea levels