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Climate Change

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by

Gabriel Yap

on 16 December 2014

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Transcript of Climate Change

Climate
Change

By: Gabe Yap & Aravindhan .V
What is Climate Change?
Climate change is a change in the weather patterns when that change lasts for an extended period of time from decades to millions of years.
Signs of Climate Change
Higher Temperatures
Drought and Desertification
Wilder Weather
Change in rain and snow patterns
Less snowpack
Melting glaciers
Shrinking sea ice
Permafrost thawing
Increase in ocean acidity

What is this?
Greenhouse trap heat from earth which causes increase in Earth’s temperature

Why Care?
This is important because this affects Agriculture, Water Supplies, Animals and Forests
Evidence
The worlds average temperature has increased roughly by 1.53 F (0.85 C) from 1880 to 2012.
Higher Temperatures
Drought and Desertification
What is this?
Extended period dryness in an area due to lack of rain which causes increase in temperature.
Why Care?
A drought means there's less water available for drinking, watering crops, making electricity at hydroelectric dams, and other uses.
Evidence
Since the 1970s, droughts have become longer and more extreme worldwide, particularly in the tropics and
subtropics.
Surface During Drought
Wilder Weather
What is this?
As the top layer of the ocean gets warmer, hurricanes and other tropical storms grow stronger, with faster winds and heavier rain. This causes other storms too.
Why Care?
Hurricanes and other storms can cause flooding, damage buildings, roads, and other structures, harm crops and put people's lives in danger.
Evidence
Over the past 20 years, hurricanes and other tropical storms in the Atlantic Ocean have become stronger.
Change in Rain
and
Snow Patterns
What is this?
As temperatures rise, more moisture evaporates from land and water. More moisture in the air generally means we can expect more rain and snow. This excess is not all over the world.
Why Care?
Too little or too much water can be a problem. Places where people depend on rain or snow melt, if there is too much it may cause flooding.
Evidence
On average, the world is already getting more precipitation now than it did 100 years ago
Thank You!

How Can We Prevent It?
Effect On People
Climate change affects in many ways including:
Agriculture
Energy
Water Supplies
Health
Ecosystems
Effects on Agriculture
Agriculture is vital for our lives.
Increase in temperature and carbon-dioxide levels can sometimes speed up plant growth.
Droughts affect plant growth too.
Effects On Energy
Sources:
http://www.google.ca/
http://www.epa.gov/
http://www.youtube.com/
Change in temperature can affect energy production.
Warmer climate may affect power plants' production.
Effect on
Water Supplies

Effect On Health
Effect on Ecosystems
Less Snowpack
What is this?
Snowpack refers to the total amount of snow and ice on the ground.
Why Care?
When snowpack melts in spring and summer, it provides fresh water for rivers and streams, and it fills reservoirs
Evidence
Many places have less snowpack than they used to, and this snowpack is melting earlier
Melting Glaciers
What is this?
This is the melting of glaciers faster than there is accumulation of snow due to warmer temperatures.
Why Care?
Melting of glaciers can add water to seas and increase water levels which can cause floods in coastal areas.
Evidence
Many glaciers in Alaska and other parts of the United
States have shrunk at a fast pace.
The Glaciers have shrunk.
Drought has caused lack water in some places like the western USA.
Less snowpack doesn't help fill rivers after melting.
Lake Powell, Utah, USA
High heat waves cause strokes and dehydration.
Change in climate increases the spread of diseases.
Climate change causes habitat destruction and pollution may cause species extinction.
In some places, the animals' life cycles depend on climate.
What is this?
This is the faster melting of ice in the Arctic during summer than normal.
Why Care?
Organisms depend on snow and ice for survival. Also, it helps keep earth warm and not too hot.
Evidence
The amount of summer ice in the Arctic Ocean in recent years was the smallest since scientists started watching them.
Shrinking Sea Ice
What is this?
Permafrost Thawing
Permafrost is the soil that is frozen all through the year. In many places ground temperatures have increased and permafrost has thawed in many places.
Why Care?
When permafrost melts, the land above it sinks or changes shape. This can cause significant damage to infrastructure and it also affects ecosystems.
Evidence
The trees in forsets are leaning or falling over because the permafrost underneath them has melted.
Increase in ocean acidity
What is this?
When the amount of carbon dioxide in the atmosphere rises, the oceans absorb it, it reacts with sea water to form carbonic acid.
At Home
Switch to lights with ENERGY STAR on them.
Reduce, Reuse and Recycle instead of throwing away everything.
Seal and Insulate houses by reducing air leaks to save on heating and cooling
Changing all filters in heating and cooling systems help reduce energy usage by those systems.
At Office
Save energy used by equipments in office like computers, monitors and others but switching them off when not in use.
Inform the office building manager to try to get a ENERGY STAR for the building by taking all efficient steps.
Use public transport or car pools to go to office than private modes.
Also, encourage your employer to bring commuter benefits
On the Road
Choose a clean and fuel-efficient vehicle, whether new or old.
Go easy on the gas and the brakes to reduce emissions.
Get regular tune-ups.
Take public transit, carpool, walk or bike instead of drive.
Check tire pressure regularly
At School or College
Raise awareness by presentations in schools.
College students can work with management to improve energy efficiency on campus.
You can also spread the word by creating clubs.
Lastly, make middle school children aware so that they act accordingly in the future.
Why Care?
Increasing acidity will make it harder for corals to build skeletons. The corals mainly serve as a habitat for marine creatures.
Evidence
Over the last few decades, the amount of carbon dioxide dissolved in the ocean has increased all over the world, and so has ocean acidity.
Have a Great Day!
Full transcript