Global Warming is the increase of Earth's averagesurface
temperature due to effect of greenhouse gases,such as carbon
dioxide emissions from burning fossil fuels or from deforestation,
which trap heat that would otherwise escape from Earth. This is a
type of greenhouse effect.
A greenhouse gas (sometimes abbreviated GHG) is a gas in an
atmosphere that absorbs and emits radiation within the thermal
infrared range. This process is the fundamental cause of the
greenhouse effect.The primary greenhouse gases in the Earth's
atmosphere are :
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1. Increasing atmospheric concentrations of greenhouse
gases.
2. Global changes to land surface, such as deforestation.
3. Increasing atmospheric concentrations of aerosols.
1. Acclerating Sea Level Rise and Increased Coastal
FloodingAverage global sea level has increased eight inches since
1880. Global warming is now accelerating the rate of sea level
rise, increasing flooding risks to low-lying communities and
high-risk coastal properties whose development has been encouraged
by today's flood insurance system.2.Longer and More Damaging
Wildfire SeasonsWildfires are increasing and wildfire season is
getting longer in the Western U.S. as temperatures rise.
4. Costly and Growing Health ImpactsClimate change has
significant implications for our health. Rising temperatures will
likely lead to increased air pollution, a longer and more intense
allergy season, the spread of insect-borne diseases.5. An Increase
in Extreme Weather EventsStrong scientific evidence shows that
global warming is increasing certain types of extreme weather
events.3. More Frequent and Intense Heat WavesDangerously hot
weather is already occuring more frequently than it did 60 years
agoand scientists expect heat waves to become more frequent and
severe as global warming intensifies.
6. More Severe Droughts in Some AreasClimate change affects a
variety of factors associated with drought and is likely to
increase drought risk in certain regions. As temperatures have
warmed, the prevalence and duration of drought has increased.7.
Destruction of Coral ReefsAs global temperatures rise, so too do
average sea surface temperatures. These elevated temperatures cause
long-term damage to coral reefs. Scientists have documented that
sustained water temperatures of as little as one degree Celsius
above normal summer maxima can cause irreversible damage.
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1.Reduce Fossil Fuel UseBurning fossil fuels increases the
levels of greenhouse gases in the atmosphere. There are two ways to
reduce fossil fuel use: Use less energy, or use alternative,
nonpolluting energy sources like solar and wind power.
2.Plant TreesBecause carbon dioxide is the most important
greenhouse gas, planting trees and other plants can slow or stop
global warming. Plants take in carbon dioxide and release
oxygen.3.Reduce WasteThe production of garbage contributes to
global warming. Decomposing waste in landfills produces methane and
other greenhouse gases.
4. Conserve WaterCities consume significant amounts of energy
when purifying and distributing water, which contributes to
greenhouse gas emissions. Saving water reduces the amount of energy
used.
