IDENTIFY PROBLEM AND PROBLEM ANALYSIS

 STEP 2

IDENTIFY PROBLEM & PROBLEM ANALYSIS

What is climate change?

The earth climates nowadays is changing very rapidly and differently. Besides that, the climate changes in our earth are effecting our lives psychological, physically and emotionally. What is climate changes? Climate change is seasonal changes for a long period at time in the world. These climate patterns play an important role in shaping natural ecosystems, the human economies and cultures that depend on them. For example, the changes in climate can affect how people, plants and animal live, such as food production and health risks. As the earth's climate is dynamic and always changing through a natural cycle, the world is now worried about changes that occurring today have been speeding up and seriously affecting human's lives. All across the world, people are taking action to prevent climate change. For example, in 2007 , scientists from the International panel on climate change (IPCC) predicted that warming oceans and melting glaciers due to global warming and climate change could cause sea levels to rise 7-23 inches by the year of 2100. Because of this ,we must take action as soon as possible to try to solve this problem or to prevent more serious of climate changes occur. I'm interested in this topic because the climate changes in Malaysia or this world are too serious and it is interesting to discuss and try to fix the problem.

What are the cause of climate change?

There are two main causes of climate changes that that effecting our lives and environment which is natural causes and human activities. Natural causes have influenced the earth's climates such as volcanic eruptions, ocean current, the earth orbital changes and solar variations. The eruptions of the volcanoes cause a cooling effect on the earth. when a volcano erupts it throws out  large volumes Sulphur dioxide(SO2), water vapors, dust and ash into the atmosphere. the volcano eruptions will affect the climatic pattern for years although the eruptions occur in a few days . the Sulphur dioxide gas will reach the upper level of the atmosphere. the tiny particles, dust and ashes will block the incoming sun rays and this will leads to cooling the atmosphere. this is because the bouncing of sunlight to the space is cooling the atmosphere of the earth.

                                    

                                                                       

 Furthermore, ocean current is one of the natural cause. The ocean is the major component of the climate system. The oceans cover about 71% of the earth and absorb about twice as much of the sun's radiation as the atmosphere at the land surface. Winds push horizontally against the sea surface and drive ocean current pattern. Beside that., the oceans also play an important role of the concentration of carbon dioxide . the change in ocean circulation will affect the climate through the movement of carbon dioxide into or out of the atmosphere.

                     

  Moreover, another cause that affects climate change is the earth's orbital changes. The earth makes one full orbit around the sun every year. if there is no tilt we will not experience seasons. Changes in the tilt of the earth can effect the severity of the seasons. For example, if there is more tilts means we will experience warmer summer and colder winters and if theirs less tilt means we will experiences cooler summer and milder winters.

  Another main cause that lead to climate changes is human activities. From the 19th century, the Industrial Revolution saw the large-scale use of fossil fuels for industrial activities . therefore, they created many jobs for the people. So, many people moved from rural areas to cities. Many vegetation areas were cleared  to become houses or factories for industries. Natural resources are being used extensively for construction , industries, transport and consumption. All this has contributed to the rises of greenhouse gases such as methane and nitrous oxide in the atmosphere. Human is generating industries factories and houses , running the vehicles that used many fossil fuels such as coal, oil and natural gases. these use of fossils fuel will lead to climate changes. Global climate change is caused by the fertilizers that used for agricultures. the result of microbial action in the soil , these chemical will release nitrous oxide. Besides that , the emission of methane and carbon dioxide will also affect climate changes. in addition, the increasing of agriculture is also caused by the increasing of human population in the world.