5
1
2
Greenhouse gases
Aerosols and soot
Initial causes of temperature changes
Variations in Earth's orbit
4
Solar activity
3
6
1
Greenhouse gases
Fossil fuel burning
effects on the Earth's radiation budget.
8
3
Solar activity
The sun ' activities cause volcanic eruption , and produce a large number of ash
9
4
Variations in Earth's orbit
?Climate engineering
solar radiation management and carbon
dioxide removal.
18
LOGO
谢谢大家观看
Thanks For Watching
19
Variations in orbital cycles may initiate a new glacial period in the future, though the timing of this depends on greenhouse gas concentrations as well as the orbital forcing.
3
The average global temperature rises significantly after entering the eighties
Global warming is coming !!!!
4
Reason
There are many reasons of the global warming, but it mainly caused by human activities
Ice, islands, city disappear
14
1
affect particular ecosystems reduced diversity of ecosystems
Terrestrial（陆地 ） ecosystems
2
threaten coral reefs, fisheries, protected species, and other natural resources of
雹）, storm, the heat aRise
19th century ——rise at the rate of 0.10 to 0.15 per one hundred meters Bring disaster to the coastal areas
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Problem
Global warming causes all sorts of problems
11
1
Extreme weather
2
Sea level rise
Ecological systems
Long-term effects
3
4
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Extreme weather
Projections suggest a probable increase in the frequency and severity of some extreme weather events, such as heat waves ， Elnino（厄尔尼诺）, drought, floods, thunderstorms, hail （冰
Global Warming
1
目录
CONTENT
1 Background 2 Reason 3 Problem 4 Solution
2
Background
The climate has been getting stea dily warmer and warmer in recent years.
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Solution
Low carbon life
17
?Mitigation
?Adaptation
Mitigation of climate reduce greenhouse gas emissions, or enhance the capacity of carbon sinks to absorb GHGs from the
Population growth
CO2 land-use change
7
2
Aerosols and soot
In addition to their direct effect by scattering and absorbing solar radiation, aerosols have indirect
atmosphere
Local adaptation efforts Enhancing adaptive capacity Agricultural production
More spending on irrigation Weather control Damming glacial lakes Geoengineering Migration Insurance
valuoe ctoeasonciety ecosystem
3
Effect the flight of the migratory birds
Air
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Long-term effects
Abrupt climate change a response from the Earth's crust the rapid release of methane and carbon dioxide from permafrost injury and loss of life a large risk to global and regional food security Economic and Infrastructure loss