IPCC report Flashcards
what is the IPCC report?
special report on the impacts of global warming if 1.5 degrees C increase.
how do we reduce GHG’s?
geoengineering? there are 2 mitigation processes
what are the 2 mitigation pathways to reduce GHG’s?
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
what does GHG stand for?
greenhouse gases.
what are the 4 pathways for reducing GHG’s?
P1, P2, P3, and P4- all have different levels of CO2 per year
what is P1 in the pathway to reduce GHG?
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.
what is P2 in the pathway to reducing GHG?
sustainability including energy intensity, human development, international cooperation.. low carbon technology, well managed and systems.
what is P3 in the pathway to reducing GHG?
middle of the road scenarios. historical patterns, achieved by changing ways of energy and products.
what is P4 in the pathway to reducing GHG?
business as usual. resource and energy-intensive scenario. adoption of greenhouse gas-intensive lifestyles. emission reductions are mainly achieved through technological means.
which pathway is the only one which would allow is to not go over 1.5 degrees by 2050?
P1.
what happens if the overshoot is large?
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.
whats wrong with CO2 removal techniques?
end up competing for land and water. and larger and longer overshoot, increase the risk for irreversible climate impacts.
what is charismatic mega fauras?
poster animals that are critical for changes in climate. shows how ecosystems are changing. shows awareness.
what was the guardian coverage for the IPCC report?
very high certainty facts.
how many peer-based reviewed studies did IPCC use?
70