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Why has the world’s climate changed since the last ice age? (Internal…
Why has the world’s climate changed since the last ice age?
External Factors
Solar Output
1% change could change the climate by 0.5-1.0C
A reduction in hot spots between 1645-1715 that created a mini ice age
100 years it could influence global climate
Solar Energy has decreased by 0.1%
Orbital Geometry
The shape of the earths orbit around the sun varies
the tilt of the earths axis varies over time
Internal Factors
Surface reflection
earth will continue to get warmer
Reflecting sunlight back into space
When it is colder the climate will drop due to snow
Volcanic Activity
1815 Mount Tambora erupted and the next year was unusually cold
Volcanic eruptions produce ash and sulphur dioxide that stops solar radiation
Change in atmospheric gas
Relationship between CO2 and temp variations
CO2 is responsible for green house effect
Green house gasses keep heat in the earth
tectonic activity
The movement of continents caused by plate tectonics affects the global pattern of atmospheric and ocean circulation and the changing shape of the earth surface causes winds and ocean currents to change