Many people hold onto the notion that climate change isn’t caused by humans, or isn’t happening at all. Climate change is absolutely happening, and humans are the primary cause. Scientists have theorized since the beginning of the 20th century that the use of coal and fossil fuels could have an effect on the climate of the earth. Later it was shown that carbon dioxide rising into the atmosphere traps heat that would have left the atmosphere, which causes global climate change. In the 1950’s scientists directly linked the increase in carbon dioxide in the atmosphere to the fossil fuel emissions of humans. Scientists across the world all agree that these fossil fuel emissions are the leading cause of global climate change, and there is literally no evidence that has contradicted the ideas and principles of climate change. As soon as we realize that climate change is in fact happening the sooner we can start taking steps to meet the affects it will have on the world, and try to limit the damage.
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Climate change is going to affect our future. We need to act on this now if we are going to do anything about it. Many people are denying that we humans have such a big impact on global warming, these people are too scared to take fault into their own actions. We have to learn off of the facts, and look at how these wildfires are causing glaciers to melt at such a rapid pace, increasing our sea level. We have to have to change how we live so our ocean is not polluted with a million pounds of carbon every minute! Ignoring this change in our world will not help anything, it will only make things worse.
Yes, I do believe that climate change is real, and so do scientists. According to real Climate (“RealClimate: September, 2013.” RealClimate RSS. N.p., n.d. Web. 08 Oct.), in September scientists came to a conclusion that humans are 95% sure HUMANS are the cause.
Though I do see where the other side is coming from. Many events, such at PETM (a 10+ degree Fahrenheit jump in only a couple thousand years), have caused some to believe that the world is just going through a hot spell, rising a little bit quicker than normal.
While both these arguments have their truths, I have to say the change is caused by humans. It cannot be only by coincidence that the steepest rise in temperature ever recorded (the last 50 years) is at the same time where we are all using and burning tons upon tons of carbon dioxide every day, more than ever before.
I think climate change is very real, the cause however is much more mysterious. Humans definitely play their part, but the world has been known to heat and cool over time. With humans polluting the air as we are, though, it’s hard to say for sure. It could be the glaciers melting in Greenland, for all we know.
Climate change is happening. Ernesto Zedillo summarizes the evidence pretty well in his book, Global Warming: Beyond Kyoto. Vietnam’s National Academy of Public Administration hosts a PDF copy that I link to at the bottom.
The temperature rise in the twentieth century was the highest seen in the past 1000 years based on simulated reconstructions of the climate over that period. The size of the Arctic Sea’s ice sheet has dropped by 20 percent in less than 35 years.
The evidence points to humans as the chief cause of recent climate change. Zedillo discusses “forcing”, which refers to any input to the climate. He explains that the warming that’s happened has been close to the amount of warming predicted to result from anthropogenic forcing, or influence on the climate by humans. He then lists sources of natural forcing, which he claims don’t explain the amount of warming we’ve experienced in the past hundred years: “solar activity, volcanic activity, cosmic rays, and orbital shifts.” He goes further to say that the impact of these kinds of forcing on the climate have diminished recently. From this information and the lack of an accepted alternative cause, he concludes that climate change is mostly caused by human activity.
To me, the evidence pretty clearly points to anthropogenic warming as real. A very accurate simulation of how the environment would have developed in the past several decades without the heavy industrial impacts on the atmosphere might convince me otherwise. The result would have to be something close to how the environment actually ended up today.
Is climate change real? is it mostly human caused?
I think that humans are a large part of climate change. The attached article discusses climate change and how we are affecting it. The greenhouse effect is a large reason for the increased amounts of CO2. For example, in a graph attached you can see that the amount of ppms of CO2 in the air is increasing steadily. This is caused by factories, burning food and trees, and the growth of the population (which means more people contributing).
Climate change would be have a direct effect on life on Earth. It would raise sea levels which would result in more flooding and unexpected stroms. It would also reduce our amount of fresh water and animals that live in colder climates. We need to go to measures such as not burning forests and using more renewable energy.
These are my references
It frustrates me to no end when people refuse to believe that climate change exists. There is such an overwhelming amount of evidence that proves its existence and the necessity of stopping the trend before it is too late. I recently read an article detailing several different forms of evidence to support climate change. Before I get into that though, I’d like to discuss the reason current fluctuations in climate are different from the fluctuations in climate that have occurred throughout history. As the article I linked below explains, large climate changes in the past occurred over tens of years not thousands and the current increasing change that has been happening for thousands of years shows a gradual warming that is not simply a small scale fluctuation of the past. In addition, past fluctuations are due to slight differences in the position of Earth, which affects the amount of solar energy received. Those differences haven’t changed and certainly wouldn’t be able to change enough to account for the differences in climate we are currently experiencing. Therefore, climate change is definitely happening and the only explanation is human related activities since climate fluctuations are clearly distinct from past ones.
Of the immense evidence provided in the article I have linked below, the most compelling is sea level rise, temperature rise, glacial retreat, decreased densities of ice sheets, and ocean acidification. The sea level has risen 17 inches in the last century, which is an especially striking number when one considers the fact that it only grew about half of that in the prior century. The temperature has risen as well with significant increases occurring from the 1880s. The past 12 years have seen ten of the warmest years in history to be exact despite the fact that the net solar output declining in the 2000s. The fact that solar output, which is the cause of past climate fluctuations, has been decreasing and temperatures still continue to rise, proves climate change is occurring and due to something other than natural causes. This leaves humans as the root of the problem. Further evidence is visible in retreating glaciers in all areas of the world as well as the decreasing ice sheets. In fact, Greenland ice sheets decreased by 150 to 250 cubic kilometers per year from 2002 to 2006. The rate of shrinking ice sheets has only increased. Ocean acidification is a direct result of human activities that emit more carbon into the atmosphere as ocean acidification has risen 30 percent since the Industrial Revolution. The Industrial Revolution increased the amount of carbon emitted by humans immensely and the increased acidification of the ocean can only be attributed to the event. The saddest truth about this ocean acidification is that as the ocean becomes more acidic, it absorbs even more carbon. The fact that our effect on climate change is allowing the ocean to store more carbon and yet we produce enough carbon to still cause massive climate change is ridiculous. We are far outpacing the amount of natural climate regulation that exists in the ocean and we are the root cause of the temperature fluctuation. People need to stop arguing about if climate change is happening and start making changes to mitigate it.
Is climate change real? Of course! But I disagree that humans are entirely to blame for global warming. Over time, the Earth goes through different phases in which the temperature fluctuates. For example, during the ice age, the Earth was covered in snow in places that are now deserts. But when the ice started melting away and the temperature increased, there were no humans to stimulate the temperature change. This example shows that the temperature of Earth fluctuates periodically. Humans are partially to blame for global warming though. Like Asea said, the “greenhouse effect” plays a major role in global warming. In this, carbon dioxide and other pollutants gets trapped in Earth’s atmosphere, and subsequently, causes a rise in temperature. Other pollutants that get trapped in the atmosphere are produced by burning of fossil fuels such as natural gas and coal. These fuels create emissions when burned that get trapped in the atmosphere. Because of periodic changes in temperature, I believe that global warming is not entirely occurring because of humans, but we do play a big part in it.
personally i don`t care about nature. i don`t believe in global warming. i believe in a much simpler explanation. that the sun is hotter then it has been before. i shower 3 times a day before school ,in school ,after cycling ride. yesterday i thrue away a full plate of chicken, because i did not feel like eating. i take the buss every day to school, i guess thats god?
i don`t feel bad when i drive my car or throw away my food. i fly all the time, to spain.
i said that i ride my bike, but i ride only for training. i don`t believe that global warming, is the big issues in todays world.
Is climate changes real? Is it mostly human caused?
Last week UN came out with a climate report where they were reporting about how the climate changes has development, global warm up and CO2 emissions. 259 scientists from 39 countries have gone through 9200 scientific articles and set together a climate report.
The report showed increasing likelihood that climate change in human caused and that the greenhouse gases is the main reason why the earth is getting warmer.
The scientists have stated that climate changes mostly was human caused, actually 95%.
Following the UN’s report will the temperature on earth in 2100 be five, nine degrees higher than it is now, the sea level will increase with 42 to 82 cm and the ice poles will smelt. It was also reported that we could get warmer days, and more risk for heat waves. This is very shocking, and most of this is human caused.
In my opinion must the humanity must decrease their CO2 emissions. Example on what we can do, maybe using more renewable energy sources, get more el-cars, shower less, drive less, bike more and use the energy more efficiency. Many measures must be done.
What is your opinion? Is the climate changes human caused? What can we do to avoid this?