BF2S Forums global warming

I think it's funny that everyone thinks global warming is going to make Earth like uber hot.

I know that is the title of the debate but i thought it had moved on a little bit from reading through the debate and yes i have read all of it.

I do not seriously think that global warming has caused the population explosion, it was just something you could deduce from looking at the evidence, our species has been around for thousands of years, and now are population is rapidly increasing. I have no evidence of this what so ever I was just theorising.

anyway back on topic.

correct me if im wrong but we are more likely to have the majority of our land as desert if the earth cools. as all of the rain will instead be in huge ice shelves. The hotter it is, the more water evapourates, thus there is more rain. While it may be true that some areas of the globe could turn to desert, overall as the temperature and co2 levels increase so will the amount of vegetation.

To be honest both sides of the debate are guilty of the same thing. they both leave out a lot of the evidence that doesnt fit with their argument.

You do paint a dire picture. And yes this is one possiblity. However another posibility is that as rainfall increase, the deserts retreat and more of the currently arid land becomes fertile. thus the third world find it much easier to grow their crops, thus can make more money etc etc. The third could become as arrable as europe, it could then prosper etc etc. Im not saying this is the most likely, the truth will probably be somewhere in the middle.

Cowbell_Kevin wrote:

Never trust what others may think however because you NEVER know who is paying them to say what they are saying.

even though i agree with you, technically doesnt the oil industry run this place? they can pay for hundreds of scientifc studys that work in their favour.

The level of mis-information here is sickening.


---Everyone do yourself a favour and go see An Inconvenient Truth---




Mcminty.

global warming is over rated, it is a natural occuring phenomenon...  It will eventually lead to a new ice ige, though not so dramatically as the world of tomorrow, but that is the way of things...

And methane gas is a severely worse greenhouse gas than CO2, so you could actually link global warùming due to humanity's flatulence.....

The real threat hanging over our heads is actually underneath us, as the earth's core is actually gradually cooling down for the last few millenia....  if the earth's core goes too cold, it solidifies, and bye bye electro-magnetic field, we'll get nuked by solar radiation....

So you can imagine I am not too worried about "global warming", it's right up there in my over-rated pile together with bird flu and others...

Watch some National Geographic specials people, like "Earth Investigated" and the like, and read up on related topics....

jarhedch wrote:

not a threat, a boat load of media hype, look at the temperature records, wqarming and cooling is a NATURAL trend that has ahppened for millions of years, and climate change has yet to be proven in response to global warming. and that "great" institution known as the UN has become less accurate with their figures the more studies they have done. Sound like progress huh?

This is something I can agree to.

DocZ wrote:

global warming is over rated, it is a natural occuring phenomenon...  It will eventually lead to a new ice ige, though not so dramatically as the world of tomorrow, but that is the way of things...

And methane gas is a severely worse greenhouse gas than CO2, so you could actually link global warùming due to humanity's flatulence.....

The real threat hanging over our heads is actually underneath us, as the earth's core is actually gradually cooling down for the last few millenia....  if the earth's core goes too cold, it solidifies, and bye bye electro-magnetic field, we'll get nuked by solar radiation....

So you can imagine I am not too worried about "global warming", it's right up there in my over-rated pile together with bird flu and others...

Watch some National Geographic specials people, like "Earth Investigated" and the like, and read up on related topics....

If you'd read the whole thread you'd probably see that a lot of people here have done a lot of reading into global warming. It is a real threat, not to the world, but to human civilisation.

You are right, methane is a worse greenhouse gas than CO2, but much less methane is given off than CO2. The biggest source of methane is livestock the second biggest is melting permafrost - which is part of the snowball effect of global warming.

There is and has always been an upward trend in temp, followed by a downward trend....
No, I am not denying the fact that nowadays this trend is going faster than previous ones.  But we simply say that it is the natural way of things...  Rise in temp followed by fall in temp...  It is a threat to mankind's society as it exists today, but we will survive...  Our ancestors survived global warming and ice ages before, so why can't we..?  The earth's atmosphere will recuperate in time...

I simply meant to say there are far worse and bigger threats to survival than global warming: asteroid impact (four times more likely to occur than getting struck by lightning - TRUE FACT), cooling down of earth's core (which IS happening), Supervolcanoes (like Yellowstone park, which is in fact one large supervolcano), repolarisation of north and south poles (which has occurred in history multiple times before), ...

Alright... I dont play BF2... I found this forum's topic on google while searching for something to do with global warming, i forget... Anyway, I just figured I would give some incite on this topic

Just to let you know, 2006 from January to August has now been deemed the hottest year on record since 1934 during the Dust Bowl. Look it up. The year to hold that record before this was 2005.
http://www.noaanews.noaa.gov/stories2006/s2700.htm
http://www.ucsusa.org/global_warming/science/recordtemp2005.html

Ok.... first of all, Global Warming is real... and in the recent century it has definitely, at least in a large percentage, been caused by us....

As James Hanson (the leading climate scientist for NASA) has said on the show “60 Minutes”, his research shows that man has just 10 years to begin to reverse greenhouse gas emissions, or global warming will reach a tipping point and will be unstoppable.
http://www.cbsnews.com/stories/2006/03/17/60minutes/main1415985.shtml

Here is another link about James Hanson:
http://www.nytimes.com/2006/01/29/science/earth/29climate.html?ex=1296190800&en=28e236da0977ee7f&ei=5088&partner=rssnyt&emc=rss

Let us think about this. I will lay down some FACTS:

Global Warming: the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades. Global warming started long before the "Industrial Revolution" and the invention of the internal combustion engine. Global warming began 18,000 years ago as the earth started warming its way out of the Pleistocene Ice Age-- a time when much of North America, Europe, and Asia lay buried beneath great sheets of glacial ice.

What Are Greenhouse Gases?
Some greenhouse gases occur naturally in the atmosphere, while others result from human activities. Naturally occurring greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases:

Carbon dioxide is released to the atmosphere when solid waste, fossil fuels (oil, natural gas, and coal), and wood and wood products are burned.

Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from the decomposition of organic wastes in municipal solid waste landfills, and the raising of livestock.

Nitrous oxide is emitted during agricultural and industrial activities, as well as during combustion of solid waste and fossil fuels.

Very powerful greenhouse gases that are not naturally occurring include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6), which are generated in a variety of industrial processes.

Each greenhouse gas differs in its ability to absorb heat in the atmosphere. HFCs and PFCs are the most heat-absorbent. Methane traps over 21 times more heat per molecule than carbon dioxide, and nitrous oxide absorbs 270 times more heat per molecule than carbon dioxide. Often, estimates of greenhouse gas emissions are presented in units of millions of metric tons of carbon equivalents (MMTCE), which weights each gas by its GWP value, or Global Warming Potential.

The most Abundant Greenhouse gas would be Water Vapor. The next, Carbon Dioxide.
This information of greenhouse gasses comes from US EPA (Environmental Protection Agency) Climate Report. http://yosemite.epa.gov/OAR/globalwarming.nsf/content/Climate.html

OK… Greenhouse Gasses are actually good. Without them, our planet would be about 60 degrees Fahrenheit cooler (from its average 60 degree Fahrenheit temperature) than it is today. So we do need them.

CO2 and Temperature Records:

Here are 2 links to CO2 and Temperature Records both taken from Wikipedia.org
http://en.wikipedia.org/wiki/Image:Instrumental_Temperature_Record.png
http://en.wikipedia.org/wiki/Image:Co2-temperature-plot.png

Here’s a paragraph from C. Donald Ahrens Meteorology Today Eighth Edition, pg. 6:

“Carbon dioxide is another important greenhouse gas because, like water vapor, it traps a portion of the earth’s outgoing energy.  Consequently, with everything else being equal, as the atmospheric concentration of CO2 increases, so should the average global surface temperature. Mathematical model experiments that predict future atmospheric conditions estimate that increasing levels of CO2 (and other greenhouse gasses) will result in a global warming of surface air between 1.4°C and 5.8°C (about 2.5°F and 10.5°F) by the year 2100. Such warming could result in a variety of consequences, such as increasing precipitation in certain areas and reducing it in others as the global air currents that guide the major storm systems across the earth begin to shift from their “normal” paths.”

In Antarctica, measurements of CO2 concentrations and temperature go back 650,000 years and at no point in the last 650,000 years before the preindustrial era did the CO2 concentration go above 300 parts per million (0.03 percent by volume of the atmosphere). Today’s concentration is at about 380 ppm (0.038 percent by volume of the atmosphere).

Now unless we cut down emissions and start using more renewable sources of energy our co2 level will double in the next 50 years and triple in the next 100 years. This is not a good thing.  That kind of warming is not a good thing. BAD

World Population:

All information on Population is from Wikipedia.com

1900: 1.7 Billion
1950: 2.5 Billion
1970: 3.7 Billion
Early 2006: 6.5 Billion

Here is a link that shows the rising population… just interesting. http://www.netlingo.com/more/poptick.html

OK… Now let’s think… The World’s population has risen roughly 3 billion in the last 30 years. What does that mean for pollution emissions? As far as I can tell, they are going to rise just as they have since the Industrial Revolution, but more likely at a far larger rate… More people driving cars, more people heating and cooling homes, more power plants, larger and more landfills… To me, there doesn’t seem to be much of any change in the way we are powering ourselves… Coal seems to be the predominating source, and a change to more renewable sources that would outweigh our huge amount of coal power sources doesn’t seem too promising in the future, for not only America, but for much of the world. For example…
China is currently in an industrial revolution of their own. That’s a great thing, but they are using old technology such as coal. They plan to build one coal fired power plant every week for the next seven years. http://www.msnbc.msn.com/id/11080450/site/newsweek/ With a population of 1,313,973,713, they are forming cities the size of Manhattan very quickly... I am not sure of the exactly how long their cities are being built.

Ok I’m done… I don’t feel like explaining positive feedbacks from the warming or anything else… I am bored now.

You people who think that this isnt a problem should educate yourselves.

DocZ wrote:

global warming is over rated, it is a natural occuring phenomenon...  It will eventually lead to a new ice ige, though not so dramatically as the world of tomorrow, but that is the way of things...

And methane gas is a severely worse greenhouse gas than CO2, so you could actually link global warùming due to humanity's flatulence.....

The real threat hanging over our heads is actually underneath us, as the earth's core is actually gradually cooling down for the last few millenia....  if the earth's core goes too cold, it solidifies, and bye bye electro-magnetic field, we'll get nuked by solar radiation....

So you can imagine I am not too worried about "global warming", it's right up there in my over-rated pile together with bird flu and others...

Watch some National Geographic specials people, like "Earth Investigated" and the like, and read up on related topics....

First of all Methane is not necessarily a "severely" worse greenhouse gas because of its lack of abundance. HFCs PFCs and nitrous oxide all absorb way more heat than both carbon dioxide and methane. So that is pretty irrelevant.

Secondly, I’m not too sure where you got this information the earth's core... it may be cooling but it is at such a slow rate it really should not be much of any worry for us. Also the earth's electro-magnetic field has died down and reversed many times just in the past million years and there are no links to it's reversals and extinction events... though intensified solar radiation would not be the greatest thing.

Last edited by DrDemise (2006-10-03 14:07:14)

DrDemise wrote:

Cheeky_Ninja06 wrote:

CO2, again this has been said at the beginning of the thread. the atmosphere ATM is CO2 impoverished. we have one of the lowest percentages of CO2 ever. no not since 1850 or even the last 2 thousand years. i mean over the last 6 billion years. ( well as far back as the ice and seabed cores will show us, which is a damned long way, look back to about page four to find the appropriate posts).

OK... Simply put.. Your Wrong... what u said about CO2 is not at all true and thats basically all that needs to be said.

I will add to that point that you are wrong, by using a graph displayed earlier.:



Over the last 600 million years, forestation of the world, and the absorption of CO₂ into the oceans has resulted in the gradual decline in atmosphere levels, but growing storage of carbon in plants and CO₂ in the oceans.


Now, over the past generations, we have been rapidly clearing these forests; these carbon stores. The carbon is being released into the atmosphere again. For example in combustion:
C_(s) + O_2(g) -----> CO_2(g)


One thing you learn in science, is "matter can neither be created or destroyed". The atmosphere has had 7000PPM of CO₂ in the past, so by destroying all the carbon stores (forests) we will be releasing CO₂. There is enough of it to reach that old level.




OK, now I hear that the graph only shows a downwards trend. Am I right?

That graph in invalid for our very recent history. The graph represents a period of 600 million years. It fits this into 517 pixels. That means each pixel represents over 1.1 million years!.

Now put your face right up to the computer screen. Look at that one pixel. Doesn't say much about how we are fucking our planet over blissfully ignorant, does it?


Mcminty.

Goven wrote:

I think it's funny that everyone thinks global warming is going to make Earth like uber hot.

Ask Al Gore, he'll tell ya since he's being known as Mr. Global Warming nowadays.

Last edited by Fadediesel (2006-10-03 16:05:49)

lol