What is the cause of global warming? What can be done to reduce global warming? How is global warming linked to extreme weather?
What is the cause of global warming?
Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation, which bounce off the Earth’s surface. Normally, this radiation escapes into space – but these pollutants, which can remain in the atmosphere for centuries, trap heat and cause the planet to warm. This is known as Greenhouse Effect.
In the United States, the largest source of heat-trapping pollution is from the burning of fossil fuels to create electricity, producing about two billion tons of CO2 each year. Coal-burning power plants are by far the biggest polluter. The transport sector is the second largest source of carbon pollution in the country, emitting about 1.7 billion tonnes of CO2 a year.
Read also :- Effects from global warming
Curbing dangerous climate change requires much deeper cuts in emissions, as well as the use of alternatives to fossil fuels around the world.
The good news is that we have begun a change: CO2 emissions in the United States actually decreased from 2005 to 2014, thanks to the use of new, energy-efficient technology and cleaner fuels. And scientists continue to develop new ways to modernize power plants, generate cleaner electricity, and burn less petrol. The challenge is to ensure that these solutions are used and widely adopted.
What can be done to reduce global warming?
What will we do – what can we do – to slow this human-caused warming? How do we deal with the changes we have already set in motion? As we struggle to find out why the fate of the Earth as we know it—shores, forests, fields, and snow-capped mountains—hangs in balance.
How is global warming linked to extreme weather?
Scientists agree that rising Earth’s temperatures are fueling longer and faster heat waves, more frequent droughts, heavier rainfall and more powerful storms. For example, in 2015, scientists said the ongoing drought in California – the state’s worst water shortage in 1,200 years – was intensified by global warming by 15 percent to 20 percent.
He also said that the chances of a similar drought occurring in the future had almost doubled in the last century. And in 2016, the National Academies of Science, Engineering and Medicine announced that it is now possible to believe certain weather events, such as certain heat waves, directly on climate change.
Earth’s ocean temperatures are getting much warmer, which means that tropical storms can pick up more energy. Therefore, global warming can turn a dangerous Category 3 hurricane into a Category 4 hurricane.
In fact, scientists have found that North Atlantic hurricane frequencies have increased since the 1980s, along with hurricane numbers that reach categories 4 and 5. In 2005, Hurricane Katrina was the costliest hurricane in US history; The second costliest hurricane, Sandy, hit the East Coast in 2012.
The effects of global warming are being felt across the world. Extreme heat waves have caused thousands of deaths around the world in recent years. And in an alarming sign of events to come, Antarctica has been losing about 134 billion metric tons of ice per year since 2002.
This rate could increase if we continue to burn fossil fuels at our current pace, some experts say, leading to sea level rise. may rise several meters in the next 50 to 150 years.