Climate Change Flashcards

(36 cards)

1
Q

Hot house conditions

A

150-200 Mya
2000 ppm
3-4 degrees warmer

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2
Q

Icehouse conditions

A

4-5 degrees cooler
1.8mya-12kya
approximately 200ppm

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3
Q

Mid cretaceous

A

100 million years ago. - 6-8 degrees higher

C02 levels 5 times higher

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4
Q

Devensian period

A

20,000 years ago

Ice 1km deep

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5
Q

Current interglacial period

A

Holocene

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6
Q

Medieval warm period

A

900-1300 years ago

1-2 degrees warmer

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7
Q

little ice age

A

Mean annual temps declined by 0.6 degrees
Tambora and Laki
Crop failures

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8
Q

Increase in ocean temps

A

0.57 degrees

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9
Q

Shrinking of glaciers

A

Valley glaciers to shrink 80-96 percent
1961-2005 - thickness of glaciers shrunk by 12 m
Melting of ice sheets adds 1mm to sea level rise per year

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10
Q

Sea level rise

A

3mm per year

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11
Q

Snow cover

A

Decreasing by 2 percent per decade
snow reflects 70-80 percent of radiation, vegetation reflects only 20%
Decline in sea ice by 8%

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12
Q

Land use changes

A

Responsible 1850-1990 for 121 GtC

south east Asia accounts for half of deforestation in tropical forests

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13
Q

Industrialisation

A

Factories Mathew Boulton

21.3% of global energy consumption in power generation

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14
Q

Population growth

A

1800-1bn
2000-6bn
Top of the s curve - 9-12 bn

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15
Q

C02 concentrations

A

280pp pre industrial, now at 400ppm

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16
Q

UK emissions

A

1800 - 7 thousand thousand tonnes
1900 - 115,000 thousand tonnes
19 times increase

17
Q

UK reductions

A

Fell by 9% in 2014
35% natural gas
Kyoto - knocked of 12.5% of 1990 benchmark by 2012
Now aims for 80%

18
Q

China emissions

A

1900 - 26 thousand

2010 - 2,500,000 thousand tonnes of co2

19
Q

Why did chinas economy grow

A

economic liberalisation - command to fee market after Mao in 70’s

20
Q

Proportion of coal in chana energy mix

A

65% more than rest of the world combined uses

21
Q

Climate Change Deniers

A

Lord Lawson - BbC aired his sceptic views, absolute uproar
Bjorn Lomborg ‘the sceptical environmentalist’ - denies significance of climate change and finds there are benefits
James Inhofe - “the greatest hoax ever perpetrated on the American people - 2 million in payments from big businesses

22
Q

Percentage of scientists that believe in anthropogenic climate change

A

97% but 1000 don’t….

23
Q

Types of sceptics

A

trend, attribution and impact sceptics

24
Q

REDD

A

paying developing countries to look after forests

25
Kivalina
Kivalina 50 feet of beech lost no sea ice to protect from winter storms uninhabitable in 10 years
26
Tuvalu
10,000 environmental refugees | low lying achiapelago
27
Bangladesh vulnerability to sea level rise
20m within 1 m above sea level - storm surges up the bay of bengal
28
How many in poverty
60 million
29
Flooding issues
80% floodplain, 70% floods annually 1/6 of land to be lost to sea
30
Mitigation strats
2bn flood embankment project protection of mangrove swamps, flooding garden beds, houses on stilts, strains of resistant crops, swimming cows
31
Australia GDP
49,000 dollars
32
Percentage of population living near coasts
80%
33
Australia risks
Desertification and flooding
34
Costs for australia
Natural disasters cost 4.5 bn now, likely to be 9bn by 2030
35
Australia weather events
Yasi cyclone, 45 degree heat wave in summer 2009
36
Mitigation
$59bn in wetland and river management 1 billion sustainable cities fund carbon pricing mechanism applied to 60% of emmissions Relocation after Queensland bush fires