Water and Carbon Cycles and the Atmosphere (AQA A-Level Geography): Flashcards
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Radiative forcing definition
Radiative forcing definition
Measure of Earth's energy budget imbalance (watts/m²)
Current radiative forcing (IPCC AR5)
Current radiative forcing (IPCC AR5)
2.8 watts/m²
CO₂ contribution to greenhouse effect (%)
CO₂ contribution to greenhouse effect (%)
Approximately 20%
Water vapour contribution to greenhouse effect (%)
Water vapour contribution to greenhouse effect (%)
Roughly 50%
Clouds contribution to greenhouse effect (%)
Clouds contribution to greenhouse effect (%)
About 25%
Which gas controls atmospheric baseline temperature?
Which gas controls atmospheric baseline temperature?
Carbon dioxide (CO₂)
Positive feedback loop in climate
Positive feedback loop in climate
Warming causes changes that lead to more warming
% of Earth's water accessible for land life
% of Earth's water accessible for land life
Approximately 1%
Committed future temp rise from existing CO₂
Committed future temp rise from existing CO₂
At least 0.6°C
Radiative forcing before 1750
Radiative forcing before 1750
Virtually negligible