Prove global warming?

Answer 1

We know from ice core samples that historically when global warming occurred, atmospheric carbon dioxide concentrations also increased, but not until about 800 years later.

http://www.daviesand.com/Choices/Precautionary_Planning/New_Data/

Many global warming deniers think this is evidence that CO2 can’t cause global warming. In fact, that’s the very first argument in the terrible Great Global Warming Swindle. On the contrary, this is actually evidence that human greenhouse gas emissions are currently causing global warming. Compare the following global temperature and atmospheric CO2 concentration plots from 1960-Present:

http://www.cru.uea.ac.uk/cru/info/warming/
http://en.wikipedia.org/wiki/Image:Mauna_Loa_Carbon_Dioxide.png

As you can see they’re both rising – not with an 800 year delay, but at the same time. If CO2 wasn’t causing global warming as was the case in the past, then why is there no 800 year delay?

This only proves a correlation between CO2 and global warming and not a causality. The reason we’ve concluded that greenhouse gas emissions are causing global warming (or more accurately, accelerating it) is because natural causes can’t account for the increase in global warming over the past 40-50 years. They account for most of the warming prior to that, but climate models have determined that greenhouse gases are responsible for about 80-90% of the recent global warming:

http://en.wikipedia.org/wiki/Image:Climate_Change_Attribution.png

The very first inputs into climate models were solar, volcanic, and sunspot contributions, but they simply couldn’t account for the recent acceleration in global warming. Thus climate scientists have concluded that humans are the primary cause.

Answer 2

Many scientific observations point to global warming although I prefer the term Climate change. Unless there is a conspiracy it is quite clear that many of the earth glaciers are melting at an alarming rate and weather patterns are becoming more extreme. The only point of contention is, what is causing it? It is hard to believe that man is not involved when you know that there are 6 billion cars in the world and we are clearing forests at an incredible rate. Combine that with all the rubbish we are depositing into the environment and it is quite understandable.
In the past man has exterminated whole species because of greed and the arrogance to think there is some sort of god fuelling our needs without limit. We are still at it.

Answer 3

Turn of the century the GMST was around 14C it is currently around 15C. Global warming is a fact. The earth has always warmed and cooled else you wouldn't have periods like the ice age.

Man made Global warming is a totally different issue with enough evidence against it as for it. Please don't take the IPCC report serious. The IPCC only contained 5% scientist and a lot are taking legal action to have there names removed.

Answer 4

Global warming can easily be proved. Its getting hotter. The important item that CANNOT be proved is that humans are the cause of it. Do not fall prey to people who say that because the ice shelves are melting that somehow we are responsible. In the 70's they were talking about Global COOLING! We have cut the output of pollution and the release of aerosols into the atmosphere as well as a myriad of other things, and NOW the environment Nazis want us to believe that we are now the cause of Global WARMING. The fact is, these people are just a bunch of whiners that want us to live like they do so their life has purpose. Yes, the Earth is warming. And some day, it will start to cool, just like it has over....and over...and over...throughout history. Environmentalism is a religion and I want the environmentalists to keep their religion to themselves.

Answer 5

Prove global warming is our fault rather than a natural phenomenon is more to the point.

Answer 6

Read the thermometer.

Look at the climatic change: monsoons in the high desert of New Mexico, tornados in New York City, rapidly-increasing severity of thunderstorms along the east coast, die-off of penguin and polar bear populations, meltdown of the ice caps.

Ocean floor and polar ice core samples indicate that at no point in the past 40,000 years has world temperature risen as fast as it has since mankind discovered fossil fuels.

Answer 7

Check the IGPCC reports, or read the papers in Environmental Science and Technology or any other reputable journal in the field. I don't know how much chemistry background you have, but if you know your stuff then the papers should make sense to you. It's kind of hard to summarize years of work done by hundreds of scientists here on Yahoo Answers.

Answer 8

Look at the Glaciers in Greenland, and their retreat over the last few years. Fact.

Answer 9

didn't you hear David Letterman at AL Gore daughter wedding he didn't look at the ice sulpture because he was worry about how fast it was going to melt

Answer 10

http://www.ipcc.ch/
clintslicker - perhaps you can provide some sources to validate your assertions regarding the IPCC