Global warming refers to the increase in global temperatures. In the past 100 years or so, the global average temperature has undergone two fluctuations of cold-warm-cold-warm, which is generally seen as an upward trend. After entering the 1980s, global temperatures have risen significantly. From 1981 to 1990, the global average temperature rose by 0.48°C from 100 years ago. The main cause of global warming is the fact that humans have used fossil fuels (such as coal, oil, etc.) for most of the past century, and discharged a large amount of CO2, or greenhouse gases, into the atmosphere Because these greenhouse gases are highly transparent to visible light from solar radiation, they are highly absorptive to the long-wave radiation reflected by the Earth, which is often referred to as the “greenhouse effect”, leading to global warming. The consequences of global warming will redistribute global precipitation, melt glaciers and frozen soil, and increase sea levels, which will harm the balance of natural ecosystems and result in climate change and threaten human food supply and living conditions.
The specific cause of the global warming trend is that people incinerate fossil minerals to generate energy or there is deforestation that injects CO2 into the Earth’s atmosphere. The Intergovernmental Panel on Climate Change predicts that by the climate model, until 2100, global temperature estimates are expected to increase by approximately 1.4-5.8 degrees Celsius (2.5-10.4 degrees Fahrenheit). According to this forecast, global temperatures will experience dramatic changes that have never been seen in the past 10,000 years, which will have a potentially significant impact on the global environment. There are two main reasons for global climate change: human and natural reasons, among which humans account for the main reason. If you are really interested in climate change, you can watch the recent climate change conference in Durban, South Africa.
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While many realize that global warming is occurring on our planet, few understand the implications that this may have on our way of life. These rising global temperatures are going to cause a host of changes on our planet, and we need to act now or prepare to adjust to some very profound changes.
First, these rising temperatures present a huge threat to our ice-caps. Layers of ice that have not melted for thousands of years are beginning to break apart and fall into the ocean. One of the biggest ice sheets on the planet, located on Greenland, is at a great risk of splitting apart and falling into the ocean. While it doesn’t sound like too big of a deal, the loss of the Greenland ice sheet will cause catastrophic circumstances world wide. The world’s sea level is expected to rise as much as 23 feet when the sheet falls, and that spells disaster for the coastal cities that represent some of the largest and most important centers of trade and commerce across the planet. Manhattan would be sunk; much of Florida would be underwater, and that’s not even to mention the worldwide consequences. Every area of the globe would be affected by this rising of sea levels, and the disaster caused would make hurricane damage seem like a blessing. Millions of refugees from the coastal cities will be without home or workplace; it would be one of the hugest human issues ever faced in our history. The changing of the climate could also affect a host of circumstances on our planet; crop yields can be affected by the rising temperatures, which would also pose significant problems to a planet of refugees. Much of the land may become barren due to the effects of temperature change, and we may find some of our most arable lands subject to the effects of soil erosion, and eventually, a transition into desert land. Also, water supplies, forests, and plant and animal life would be affected by the planet’s changes, and we may not be able to see how significant these changes may affect our lives until they are already upon us. For that reason, it’s important that we increase our knowledge of global warming, and do our best to prevent it in the coming years.