What impact does human activity have on climate change and global warming?

Many people claim that Global warming is just part of a natural cycle and that the Arctic has warmed up in the past. But the fact is that the global warming we are experiencing is not natural. People are causing it by burning fossil fuels and cutting down forests. Scientists have shown that these activities are pumping far more CO2 into the atmosphere than was ever released in hundreds of thousands of years. This buildup of CO2 is undisputedly the biggest cause of global warming.

Climate scientists have modeled the different components of global climate change and they have found that natural causes account for most of the warming until the past few decades, at which point greenhouse gases rule. They find that greenhouse gases account for 70-95% of the recent global warming. A glacier melting in the Himalayas is practically certain to disrupt water supplies within the next 20 to 30 years. Floods and rock avalanches are almost certain to increase. Heavily-populated coastal regions, including the deltas of rivers such as the Ganges and Mekong, are expected to be at risk of increased flooding. Rising seas would submerge coastal communities, contaminate water supplies with salt and increase the risk of flooding by storm surge, affecting tens of millions of people globally.

The claims that fighting global warming will cripple the economy and cost people thousands of jobs are completely unverified. In fact, companies that are already reducing their heat-trapping emissions have learned that cutting pollution can save money. Denying the global warming doesn’t exist is seriously irrational, illogical and ludicrous.

It will be at least 50 years before it causes a problem for us humans. The problem is that many other animal species are less adaptable, and will probably go extinct before that. In addition to all the problems, there will probably be food crisis because of the temperature and environmental change making it hard for plants to survive. Some change will always will occur, but human activity has resulted in the increase in the rate of change. Our actions can only slow the rate of change to give us more time to respond and save this planet. And it is very crucial that we do.

a million. No, by fact the action picture star skeptics have no information. They placed up cherry-picked suggestions, 0.5-truths and especially circumstances -- outright lies. The information is sparkling to all with an open innovations. The greenhouse concept has been an excepted part of physics for nicely over a hundred years. people are putting further and extra greenhouse gases into the ambience. international temperatures are increasing, on an identical time as photograph voltaic activity isn’t. Glaciers are taking flight international. the fee at which the arctic is loosing sea ice has taken aback all the pros. climate extremes have become extra user-friendly. 2. climate and climate are easily 2 distinctive fields of prognosis, and the point of predictability is comparably distinctive. think of of this by fact the adaptation between attempting to foretell the top of the 5th wave from now which will come splashing up the coastline as against predicting the top of the next day's extreme tide. climate is defined as climate averaged over a volume of time, regularly around 30 years. This averaging over the years removes the random and unpredictable habit of climate. This via no skill says that it is inevitably elementary to foretell climate transformations, yet for sure seizing on the weatherman's weekly forecast failures to forged doubt on a climate sort's a hundred year projection is a controversy of lack of expertise.

Scientists say 350ppm is bad, and we are now at 390ppm of CO2.

Humans burn coal, oil, and natural gas which all produce CO2 as a byproduct, leading to more CO2. Human activity can also slow global climate change if confronted at its source. People have begun to plant massive rain forests and have shown that climatic remediation is possible. Desertification is among one of the worries of our times. Global climate change does not have to only do with CO2, it has to do with the Oceans, which are becoming more and more acidic as they absorb massive loads of CO2, leading to the massive deaths of creatures known as krill, which are the lowest organism on a chain of life that trickles all the way to the great humpback whale, bald eagle, and penguin. The Humane thing to do is start going veg, be efficient, think green, and buy solar!

Virtually none. The majority of heat absorbed by CO2 is absorbed in 10 meters. Water absorbs much more heat in much less distance. There are other effects like conductance and convection that have more of an effect. The only thing you do when you increase the amount of CO2 is shorten the distance that it takes to absorb it to extinction. At the middle of the peak, those frequencies are absorbed in about 10 meters. Less is absorbed on the shoulders of the peaks when the molecules of CO2 are in unusual states. That is only about a percent of the total that CO2 absorbs and it is a tiny fraction of a degree that it could warm. That is 1 percent of the at most 3 degrees warming from CO2 that might be increased. That is what alarmist are saying is going to magically turn into 6 degrees of warming. It defies rational explanation and it is hard to believe that anyone with a shred of integrity could associate themselves with such complete nonsense. This isn't science. It is pure propaganda.

Good starting point:

http://en.wikipedia.org/wiki/Global_warming

http://www.metoffice.gov.uk/climatechange/