Water Cycle: Pollutions Effects

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Water Cycle Pollutions Effects
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(No Transcript)
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"Water may be the resource that defines the
limits of sustainable development.
-Environmental News Service
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gtAerosollt
gtAerosols are mostly made up of small particles
of black carbon that enter the atmosphere as a
gas. gtThese gases are caused by burning fossil
fuels such as oil and coal, and by burning trees
and plants. gtResearchers say aerosols in the
atmosphere may be slowly reducing the water
supplies on which people and animals depend.
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gtAerosols are reducing the amount of sunlight
going into the ocean, which is needed in
evaporation. gtAs sunlight heats the ocean, water
escapes into the atmosphere and falls as rain.
However, scientists say aerosols are blocking
large amounts of sunlight. They say this
reduction may be weakening the water cycle of the
planet. Cynthia Kirk
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Effects on Clouds/ Condensation
gtWithin clouds, aerosols can limit the size of
cloud droplets, interfering in the development of
the larger droplets required for raindrops. gtA
reduction of rain and snowfall caused by aerosol
pollutants can affect the renewal of the world's
major fresh water supplies. gtIt could affect
lakes, groundwater supplies, ice and snowfall in
mountain areas.
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A report by the United Nations Population Fund
found that water use has increased by six times
during the past seventy years. Scientists say
that if usage continues at its current rate, the
fresh water supply could become the most serious
problem facing the world.
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ltWorks Citedgt
http//healthandenergy.com/pollution_and_drought.h
tm http//www.manythings.org/voa/01/011214er_t.htm
http//ga.water.usgs.gov/edu/watercyclesummary.ht
ml http//www.climateark.org/articles/2001/4th/aep
ocoul.htm http//www.mountwashington.org/