Activities Causing Enhanced Greenhouse Effect (Leaving Cert CASD): Flashcards
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Enhanced greenhouse effect
Enhanced greenhouse effect
Human activities intensifying natural greenhouse effect
CO₂ rise since Industrial Revolution (ppm)
CO₂ rise since Industrial Revolution (ppm)
From 280 ppm to over 410 ppm
Global temp rise from late 1800s to 2020
Global temp rise from late 1800s to 2020
Approximately 1.18°C
Transport sector's % of global CO₂ emissions
Transport sector's % of global CO₂ emissions
Around one-quarter (25%)
Deforestation's dual impact on greenhouse effect
Deforestation's dual impact on greenhouse effect
Releases stored carbon & reduces CO₂ absorption
Agriculture's contribution to total greenhouse gases
Agriculture's contribution to total greenhouse gases
Around one-third
Gas livestock produce during digestion
Gas livestock produce during digestion
Methane (CH₄)
Largest single source of human-caused emissions
Largest single source of human-caused emissions
Fossil fuels (coal, oil, natural gas)
Evidence from isotopic signature of atmospheric CO₂
Evidence from isotopic signature of atmospheric CO₂
Shows it comes from fossil fuels, not natural sources
IPCC 2021 conclusion on human influence
IPCC 2021 conclusion on human influence
Unequivocal that humans warmed atmosphere, ocean, and land