Global warming is the increase in the average temperature of Earth’s surface. Since the late 1800’s, the global average temperature has increased about 0. 7 to 1. 4 degrees F (0. 4 to 0. 8degree C). Climate change is happening and its effects are real. However, the larger the change in climate, the more negative the consequences will become. Global warming will make life harder for most people . When the carbon-dioxide level doubles, the temperature will go up by 5 degree Celsius.
It would lead to melting of polar ice caps, rise in sea level and there would be dramatic changes in the map of the world. Global warming has been experienced all over the world. In U. S. ,average temperatures have been rising because of climate change. As a result, the growing season has lengthened; tree has been sucking more carbon. Global warming is the biggest and most serious problem faced by us today. One cause is the human activities; human activities are contributing to global warming by enhancing Earth’s natural greenhouse effect.
The greenhouse effect warms Earth’s surface through a complex process involving sunlight, gases, and particles in the atmosphere. Gases that trap heat in the atmosphere are known as greenhouses gases. This is like when heat is trapped in a car. On a very hot day, the car gets hotter when it is out in the parking lot. Because, the heat and light from the sun get into the car through the window, but it can’t get back out and that is what greenhouse effect does to the earth. People started emitting large amounts of greenhouse gases when industry took off in the mid-1700.
Fossil fuels were burned more and more to run our cars, trucks, factories, planes and power plants, those fuels released carbon in the form of carbon-dioxide. Greenhouses are released not only when these fuels are burned, but also when they are retrieved from the earth. Coal, oil and natural gases are fossil fuels, but they are not all the same. They differ in how they are used, the greenhouse gases that they released when they are burned. Another is, electricity, generating electricity produces large amounts of greenhouse ases. Large scale power plant waste as much as two-thirds of the fuel that they use, either as heat sent up smoke stacks or electricity lost along transmission lines. Global warming has many damaging effect. It might harm animals and plants that lived in the sea. It could also force animals and plants on land to move to new habitants. Change in weather can cause floods, droughts, and an increase in damaging storms. Global warming could melt enough polar ice to raise the sea level.
As a result of global warming, the surface water of the ocean could become warmer, increasing the stress on ocean ecosystem. High water temperature can cause a damaging process called coral bleaching. Coral bleaching expels the algae that give them their color and nourishment. Consequently, the coral turn white and the animals and plants die. Warmth temperature also spread diseases that affect sea creatures. Another one is changes of habitat, when there is change in climate, shift might occur in the natural habitats of animals and plants.
Many species will not survive in the new region they inhabit. The plants and animals that sustain people in a given area may be unable to adapt to local or regional change in climate. Consequently, the weather pattern could change. Changes in the rainfall patterns could increase both flooding and drought in some areas and it will a have serious bearing on agriculture and the tourism industry as well. In addition changes in temperature are altering evaporation and precipitation patterns which means more rain in some places and less in others. This might lead to hurricane and other tropical storms.
As a result, the sea level will rise, when the planet heats up, the sea level rise for two reasons: the ice from Greenland melt into the water and it changes the water’s salinity, or saltiness and water expands when it warms. The sea level would rise throughout the world. Unfortunately, global warming is endangering those water sources. Glaciers are melting more quickly, this rapid melting can mean floods in the spring and drought in the late summer because the water has drained away. Hence, there will be threats to human health; tropical disease such as malaria might spread to larger regions.
Heat waves can cause more death and illness, and Floods and drought can increase hunger and malnutrition. Due to global warming, crop yield could decline. Therefore, yield in the tropics might fall because the temperature there is too high for many plants to tolerate. Everyone can participate in reducing global warming. Alternate energy sources that do not emit carbon-dioxide and that can convert the sunlight, wind energy into electrical energy. Also, we should reduce the amount of electricity we used at home by turning off our computers and electricity while we are away from home.
At home we should develop the habits of energy saving, choose low energy technologies and turn down your thermostats when the house is empty in winter. We can take our commitment to renewable energy. And the industry would have to reduce the emission of gases. Industrialized nation should have different emission target. We need to take action quickly to reduce the emission of gases and there should be an agreement internationally to target the emission. In summary, global warming would cause economic and ecological damage and it would be disastrous on agriculture, which is the mainstay of the world.
Therefore, the alterations to the climate are expected to be serious: more intense storms, more pronounced droughts, coastal areas more severely eroded by rising seas. High end, the world could face abrupt, catastrophic and irreversible consequences. Finally, everyone can play a part in slowing down global warming. It requires a major commitment from everyone, industry and business, and these changes can make the necessary difference.
References: Elizabeth May and Zoe Caron (2009) on Global warming. www. nasa. gov/worldbook/globalwarming .