Global Definition and 413 Threads

I once had a discussion with a Ph.D. at a university regarding global warming. His answer was interesting and something that I do not see addressed commonly in global warming discussion. He basically stated that when we change the biomass on a piece of land, such as a large tract of land and...

Does anyone know of a computer program on the web that Physics Forums members could use to input values and get a rough idea of how accurate or sensible their ideas on global warming are? Is there a software disc on sale somewhere? Could people on this website develop a computer program? There...

If CO2 produced by industry is causing global warming then wouldn't there be hotspots above major industrial sites where the CO2 is most concentrated? And wherever in the world CO2 is washed out of the air by heavy rainfall, shouldn't there be CO2 coldspots too? If CO2 warming is increasing...

More dust in the air presumably means that there are more nuclei on which water molecules can condense to form liquid water.Water vapour is a greenhouse gas so can the current trend in global warming be attributed to less dust in the air than usual resulting in more water vapour and higher...

A smooth surface aborbs less sunlight than a rough one because more light is reflected. It takes relatively little energy to disturb a smooth surface.If the sea becomes more turbulent because of a changing wind direction or wind speed does the sea heat up more by absorbing more sunlight.And...

Can Global Warming Cause Earthquakes, Tsunamis, Hurricanes and Volcanic Eruption?. I know this is all normal but I mean can it cause it to be more extreme and happen more often?.

I'm not entirely sure that this belongs here, but none the less here are some thoughts I had today. I am a working cosmologist, which is important to know when reading the following. Most Cosmologists today are pretty sure about the Big Bang being roughly the correct theory that describes our...

1a) Determine the maximum value of f(x,y,z)=(xyz)1/3 given that x,y,z are nonnegative numbers and x+y+z=k, k a constant. 1b) Use the result in (a) to show that if x,y,z are nonnegative numbers, then (xyz)1/3 < (x+y+z)/3 Attempt: 1a) Using the Lagrange Multiplier method, I get that the...

It's seems to be the accepted thing that global warming is bad, but is it such a bad thing? The dinosaurs certaintly preferred a more warmer climate. Look at the facts:- 1. The ice caps are melting - so what? What we lose on the south pole we gain on the north pole, we might lose a...

http://www.geocities.com/asdfasdf23135/advcal29.JPG I am wondering whether the above statement is true. "A necessary condition for the constrained optimization problem to have a GLOBAL min or max is that..." Should the word local replace global? I am confused about the method of...

I know this topic should be in the section: "politics and world affairs" or "earth"... but I get the feeling "true" scientists (physicists :biggrin:) won't be in those sections to answer this. Anyway, I hear everywhere that the primary reason for global warming is "CARBON DIOXIDE". Now...

http://motls.blogspot.com/2007/01/peer-reviewed-global-cooling.html Just for a change. <Edit by Moonbear: Here is a direct link to the article being discussed in the blog http://www.springerlink.com/content/g28u12g2617j5021/?p=77874d861902420aacca82524790dc89&pi=7 All discussion within the...

http://www.npr.org/templates/story/story.php?storyId=88520025 Interesting, especially when you consider that this winter has been the coldest in over 100 years in many places around the globe.

http://www.foxnews.com/story/0,2933,337710,00.html Al Gore is getting sued for fraud. This should be interesting. Now the debate is forced into the presentation of evidence suitable for a court of law. Will the outcome change the worlds mindset?

There are those that posit that global warming can only be tamed via government regulations. On the other hand you have people saying that it can be tamed through free market economics. What do you guys think?

I want to post some interesting quotes about global circulation models. Well, I believe they have potential I believe that the application of the theory is often misapplied. http://www.climateaudit.org/?p=483#comment-208656 http://www.climateaudit.org/?p=483#comment-209256...

how would the Earth be affected by global warming in terms of the sea level , global ocean circulation, and oxygen isotopes?

It may be valuable to consider microalgae as a potential solution to a number of problems; not the least of which being the energy problem. Algae can be used to produce biodiesel, ethanol, and hydrogen, as options to the use of petroleum based fuels...

Based upon the retreat of glaciers worldwide, and opening of the Arctic ocean, and Greenland's hastened dissolution, global atmospheric warming would seem to be with us. But has there been any global oceanic warming? None yet definitively detectable by thermal expansion of the oceans (i.e. proxy...

I am a believer that globalization is not only unavoidable, but also that in the long term it is good for everyone. However, we see tremendous inequities between developed and developing nations in the labor and environmental protection laws, safety laws, enforcement of these laws, and oversight...

http://www.newsmax.com/insidecover/global_warming/2007/12/10/55974.html What do you make of that? that's not going to go down very well at the IPCC, that's for sure! Amazing really that it has taken so long for people to realize that variation in the original source of Earths heat can effect...

One Reason I Can't Take All the "Science" on Global Warming Seriously http://www.americanthinker.com/blog/2007/11/everything_is_caused_by_global.html

can you please help me on my project? it's about global warming and it should be connected in physics..

a thought occurred to me, it may be dangerous and completely idiot that's why i choose to run it past you folks. late last century we had the ozone hole scare, CFC gasses/compounds were removing our precious ozone and skin cancer were a danger wherever it traveled. but.. with the buildup...

I give up. I now officially have no opinion about global warming. none. This 20/20 segment sums up pretty well why: http://youtube.com/watch?v=uO9laiUXS1o

Hi, I am new here, and I have a question about the Global warming. do you think the global warming is caused mostly by pollution or solar activities of our sun ?! cheers -Amir

I know there is already a post on this, but I just wanted to make a point. I live in California, so obviously there is a great deal of controversy here by the coast and especially where I am (a small conservative community) whether or not warming is legit (long story short, I believe...)...

The global warming skeptics advance arguments against the conclusions of the IPCC. They argue that anthropogenic global warming has not been "proven". But there is no such thing as scientific proof. There are merely falsifiable theories. The 'proof' of a positive theory is simply the result...

This was on PBS's NOVA a few months back. A by-product of greenhouse gas emissions is what I am going to term "macro particles." Thanks to their size and composition, these particles have been reflecting sunlight and therefore reducing global warming, although on balance they could not reverse...

http://environment.independent.co.uk/climate_change/article2739751.ece Interesting article on global warming from the liberal rags, most interesting is the figures in the UK, many people still it seems aren't on board with the global warming thing, and many think there actually isn't...

It goes like this: The thermometer in the MMTS shelter has been pampered increasingly with lot's of cosy warming gadgets like airco exhausts, while concrete removes the moisture of the soil evaporating and cooling. No wonder that it is nice and warm. See what happens with a correctly...

Effect of doubling CO2 - why logarithmic and not linear? How does a 30% to 50% increase in CO2 predict a 2-5 deg C temperature rise? Is there a formula? Why is the effect on low altitude atmosphere temperature effect of increasing CO2 logarithmic? I would have thought it would be linear...

Since rising CO2 levels are the problem and trees take in CO2 while giving off oxygen, wouldn't growing a vast amount of trees solve Global Warming at a significant level or am I missing another element here?

Michael Griffin turned up the heat this morning on global warming in an interview on National Public Radio. http://www.npr.org/templates/story/story.php?storyId=10571499" [FONT="Times New Roman"]NASA administrator Michael Griffin defends the space agency's programs, including plans for a...

When even a left winger is attacking global warming, is this the sign of the inevitable political earthquake approaching rapidly? http://counterpunch.com/cockburn05122007.html

http://www.pbs.org/newshour/indepth_coverage/science/globalwarming/ I saw Dr. Chu at Stanford a few years ago where he gave a fascinating lecture and was most inspirational. I was thrilled to see him involved in this endeavor. And why not? He is in the business of "cooling" but on a slightly...

http://www.livescience.com/forcesofnature/070417_wind_shear.html

The study of oxygen isotopes as a method of analysing has provided much insight on glacial and interglacial cycles, throughout the quaternary period Individually these techniques may not prove 100% accurate and may all have flaws. Most of the quaternary period has been unaffected by...

1) How come on the PhysicsForums almost no one says “global warming” instead they say “anthropogenic global warming” while the media, and the average person, always refers to it as “global warming”? 2) It is my understanding that if US legislators rule to try and combat anthropogenic global...

The latest photographic data.:smile: http://anthropology.net/files/warming.jpg

Not particularly looking for arguments or why you believe, just looking at the numbers.

The most used argument against "global warming skeptics" The most used arguements seem to be: 1:There is no debate on global warming 2:There is a scientific consensus. How can you respond to that?

I've seen it before that some people say that global warming will cause or does now cause areas to greatly cool as well. How is this true?

We haven't discussed that climate debate in New York the other day about the motion: "Global warming is not a crisis." If it wasn't for the posture of Michael Crighton, the alarmists may have won according to Gavin Schmidt...

Does this Fxy have a global Min? Heres the question: Consider the function fxy= x+y+9/x+1/y. Determine all the local max min and saddle points. DOes f have any global maximum points in the region R where x,y>0 Explain algebraically. So I found only one critical point, 3,1 and found it...

Enjoy! http://video.google.com/videoplay?docid=9005566792811497638&q=%22The+Great+Global+Warming+Swindle%22 Oops 1 hr 15.56 min. (spin off from: https://www.physicsforums.com/showthread.php?t=159338 , where I promised: But that thread went in another direction, anyway, some...

In the early days of Global Warming, the "capo di tutti global warming capi", Stephan Schneider, made his world famous public appeal to commit noble cause corruption: http://stephenschneider.stanford.edu/Publications/PDF_Papers/DetroitNews.pdf It's likely that this appeal is one of the...

Now that the global warming fever has seriously infected the US, attempting to immunizing itself from the heresy deniers, itt may be an idea to observe the analyzis of sociologist Frank Furedi here about the tension between opressing *dangerous* ideas and free speech...

I'm a non-scientist trying to understand a bit about climate science and the state of it. It's mysterious to me why so many people (some on both sides of most debates I see!) seem to treat this as though it were a religious issue and not a scientific one. 1. My understanding is that the...

Andre, this is mainly concerning your work, especially with your claim that CO2 is not a gas that causes global warming. From what I have gathered (and I hope I don't make a fool of myself by saying this) but you have argued that CO2 levels have risen over periods of cooling in the past...