IPCC report Flashcards

1
Q

what is the IPCC report?

A

special report on the impacts of global warming if 1.5 degrees C increase.

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2
Q

how do we reduce GHG’s?

A

geoengineering? there are 2 mitigation processes

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3
Q

what are the 2 mitigation pathways to reduce GHG’s?

A

stabilising global temperature at/below 1.5 degrees above pre-industrial levels
or exceed 1.5 degrees at around 2050, remain for a few decades and then return to below 1.5 by 2100

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4
Q

what does GHG stand for?

A

greenhouse gases.

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5
Q

what are the 4 pathways for reducing GHG’s?

A

P1, P2, P3, and P4- all have different levels of CO2 per year

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6
Q

what is P1 in the pathway to reduce GHG?

A

lower energy demand, while living standard rise. CO2 emissions are evenly distributed, rapid decarbonisation of energy supply. afforestation is only a CDR option. neither fossil fuels or BECCs are used. with this pathway, we have to leave fossil fuels by 2020.

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7
Q

what is P2 in the pathway to reducing GHG?

A

sustainability including energy intensity, human development, international cooperation.. low carbon technology, well managed and systems.

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8
Q

what is P3 in the pathway to reducing GHG?

A

middle of the road scenarios. historical patterns, achieved by changing ways of energy and products.

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9
Q

what is P4 in the pathway to reducing GHG?

A

business as usual. resource and energy-intensive scenario. adoption of greenhouse gas-intensive lifestyles. emission reductions are mainly achieved through technological means.

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10
Q

which pathway is the only one which would allow is to not go over 1.5 degrees by 2050?

A

P1.

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11
Q

what happens if the overshoot is large?

A

the larger and longer overshoot, the greater the reliance on practices or technologies that remove CO2 from the atmosphere, on top of reducing the sources of emissions.

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12
Q

whats wrong with CO2 removal techniques?

A

end up competing for land and water. and larger and longer overshoot, increase the risk for irreversible climate impacts.

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13
Q

what is charismatic mega fauras?

A

poster animals that are critical for changes in climate. shows how ecosystems are changing. shows awareness.

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14
Q

what was the guardian coverage for the IPCC report?

A

very high certainty facts.

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15
Q

how many peer-based reviewed studies did IPCC use?

A

70

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16
Q

what does climate relate risks to?

A

health, livelihood, food, water supply, economic growths.

17
Q

what is the biggest difference of species in the temperature change?

A

coral reefs. 25% of all marine species replies on coral reefs. vulnerable to hotter and more acidic water. the rise of 1.5 degrees will lose 80% of all coral reefs.

18
Q

what are the changes of no remaining artic sea ice?

A

summer with no remaining arctic sea ice, 10 x more likely at 2 degrees than 1.5 degrees.

19
Q

what is connected to the dissapearing sea ice?

A

the jet stream is connected to sea ice, which causes weather systems to get stuck in place, leading to heatwaves, floods, and droughts.

20
Q

how has the volume of sea ice declined?

A

7-% in the past 40 years.

21
Q

what does IPCC conclude about 2 degrees of global warming compared to 1.5 degree world?

A

lead to more heat-related deaths, smaller crop yields, worse extreme weather events, slower economic growth, more people on poverty, increase in population facing water stress by up to 50%, compared to a 1.5 degree world

22
Q

how has the level of global warming affect impacts with the reasons for concern systems?

A

5 RFC illsutrate impacts and risks of different levels of global warming for people, economies, ecosystems.

23
Q

what does RFC stand for?

A

Reasons for Concern

24
Q

what does purple represent in the RFC graphs?

A

very high risks of severe impacts and the presence of significant irreversibililty or the persistence of climate-related hazards, and the ability to adapt due to the nature of the hazard

25
Q

what does red represent in the RFC graphs?

A

severe and widespread.

26
Q

what deos yellow and white represent in the RFC graphs?

A

risks are detectable and attributable to climate change, and no impacts are detectable.

27
Q

what are the 5 reasons for concern?

A

threatened systems, extreme weather events, global aggregate impact, larger-scale singular events.

28
Q

what are the 10 natural, managened and human systems?

A

warm-water corals, mangroves, small scale fisheries, artic region, terrestrial ecosystem, coastal flooding, fluvial flooding, crop yields, tourism, heat-related morbidit,y and mortality.

29
Q

what is the most affected natural system?

A

warm water corals and artic region, with large purple colours.

30
Q

what is the msot affected RFC?

A

unique and threatened systems

31
Q

what is the direct relationship between increasing temperature?

A

intensifying storms, elevated thermal stress, loss of tropical coral reefs.

32
Q

what are the top 10 countries for all emissions?

A

china, united states, EU, india, russia, japan, braxil, indionesia, canada, mexico.

33
Q

what are the 3 areas which all emmisions go to?

A

largest is energy, then agriculture and industry.

34
Q

what fundamental cahnges are needed in the world to help?

A

transportation, agriculture, housing, infrastructure.

35
Q

what does IPCC say about global CO2 emissions?

A

they will have to have halved by 2030, and reduce more or less by 0 by 2050. this would still not be enough.