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Climate change refers to seasonal changes over a long period of time. Worldwide, people are paying serious attention to climate change. Because so many systems are tied to climate, such as, people, plants and animals live, such as food production, availability and use of water, and health risks.
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Sequence Idea’s….
Changing climate
Causes of climate
change
Effects of climate change
Statistical Statement
Illustrate the climatic situation
Recommendation
Question and Answer Secession
Climate change
• Climate change refers to seasonal changes over a long period of time.
• Worldwide, people are paying serious attention to climate change.
• Because so many systems are tied to climate, such as, people, plants and animals live, such as food production, availability and use of water, and health risks.
Factor of climate change
Climate change
Natural Factors
Volcanic eruptions
Ocean current
Earth orbital changes -
Solar variations
Forest fire
Natural Factors
• Volcanic eruptions
• Ocean current
When a volcano erupts it throws out large volumes of sulphurdioxide (SO2), water vapour, dust, and ash into the atmosphere
The oceans are a major component of the climate system. Ocean currents move vast amounts of heat across the planet.
Forest fire
Earth orbital changesThe earth makes one full orbit around the sun each year. It is tilted at an angle of 23.5° to the perpendicular plane of its orbital path. Changes in the tilt of the earth can lead to small but climatically important changes in the strength of the seasons.
A wildfire is any uncontrolled fire in an area of combustible vegetation that occurs in the countryside or a wilderness area.
Natural Factors
Artificial Factors
Human ActivitiesThere is strong evidence that the climate change over the last half-century has been caused largely by human activity, such as the burning of fossil fuels and including agriculture and deforestation."
• Emission of green house gases such as…
• Solar radiation
51% of solar radiation absorb by earth. 20% scattered by the clouds19% absorb by clouds and atmosphere and 6% scattered by atmosphere,4% reflected by surface.
Artificial Factors
water vapour, carbon dioxide, methane, nitrous oxide, ozone and CFC's.
GREENHOUSE GASES Effect of greenhouse gases.
Nitrous oxide
Water vapor
Carbon dioxide
Methane
Sulfur hexafluoride
Greenhouse gases trap the infrared heat that is trying to escape back into space.
Increase in the global average surface temperature .
Greenhouse effect, contributing to global warming.
The atmospheric trapping, or reflection of radiant energy back toward the earth.
Effects of climate change
Global Warming
Global Warming is the increase of Earth's average surface temperature due to effect of greenhouse gases.
Effect of global warming
Sea level rising. Global temperature is rising. Health risk. Melting polar icebergs and glacier. Arctic sea ice loss.
Melting Of Glacier
Nearly 97% of Greenland's surface ice sheet thawed during a four day period in July - more than it ever has in the last 30 years, NASA satellite data shows..
Effects of climate change
Acid Rain
Acid rain is a rain or any other form of precipitation that is unusually acidic. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides, which react with the water molecules in the atmosphere to produce acids.
Effects of climate change
Reduce carbon dioxide emission
Globally, power generation emits nearly 10 billion tons of CO2 per year.
Use Alternative energy such as Wind power Solar energy etc
Worldwide, motor vehicles currently emit well over 900 million metric tons of CO2 each year.
Reduce carbon dioxide emission
Use Electronic Car or Solar car as alternative of Diesel, Petrol or gas engine.
Reduce CFC emission
Each year worldwide, currently over 93 million metric tons of CFC emit by AC, Refrigerator, Aerosol and Body spray etc.
Reduce deforestationEarth's total forest area continues to decrease at about 13 million hectares per year.
Planted 2 tree against 1 tree cutting.
