Originally posted by unityemissions
Your post makes little to no sense.
Nobody in their right mind is looking at just CO2, rather they are choosing to FOCUS on co2 emissions for obvious reasons.
Please try and think before you post.
Thanks!
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Current warmth seems to be occurring nearly everywhere at the same time and is largest at high latitudes in the Northern Hemisphere. Over the last 50 years, the largest annual and seasonal warmings have occurred in Alaska, Siberia and the Antarctic Peninsula. Most ocean areas have warmed. Because these areas are remote and far away from major cities, it is clear to climatologists that the warming is not due to the influence of pollution from urban areas.
Originally posted by ElectricUniverse
Originally posted by Essan
So where do you think the Asian brown cloud comes from? Though obviously it has no effect on climate because nothing humans do affects climate, eh?
So tell us Essan, why is it that the areas which had/have been warming the most have ALL been far away from major sources of pollution if anthropogenic CO2 is the cause of the warming?
Even NASA had to admit to this fact.
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Current warmth seems to be occurring nearly everywhere at the same time and is largest at high latitudes in the Northern Hemisphere. Over the last 50 years, the largest annual and seasonal warmings have occurred in Alaska, Siberia and the Antarctic Peninsula. Most ocean areas have warmed. Because these areas are remote and far away from major cities, it is clear to climatologists that the warming is not due to the influence of pollution from urban areas.
www.nasa.gov...
It should be obvious to everyone that if anthropogenic CO2 has been the cause of the warming the areas that should have been warming the most should have been on areas of large pollution, like large cities. So why isn't this so?
Originally posted by chiefsmom Can you please explain to me how they have found tropical plant fossils under the ice in Greenland?
Antarctica has not always been a frozen land at the bottom of the world – it was actually habitable for most of Earth’s history.Here. The thing is that some of this time is in continental drift. But when it was attached to Australia, when it was pretty much in the place it is now? It was still considered habitable.
Permanent ice began to form on the continent some 70 million years ago, but it is only within the last 5 million years that the cold conditions have been severe enough to quash most life there.
How large is the settlement civilization in Antarctica?
McMurdo, with as many as 1200 people, is the largest settlement. But many other countries have bases, and the total population of the continent is about 4000 during the summer. It is only about 400 during the winter.
Jane - Well the interesting thing is that even though more than 99% of Antarctica's covered in ice, the most common fossil that you can find in Antarctica is probably fossil wood. And what we can do is use fossil plants that we find in the rocks, so fossil wood, leaves, even the flowers. We can use those to reconstruct the vegetation and from there we can work out what the temperature was. So if we go back say 50 million years ago, to what we call sub-tropical to warm temperate which means very nice indeed thank you, warm summers and warm winters.Here. By 50 mil, it's separated from all but Australia, and is starting to ice up, I thought? For both to be true, it would be permanent ice on mountains, with Louisiana temperatures for the winter. But she later says, no sign of ice at all by 50 mil., so meh.
Jane - Well the most interesting thing is that Antarctica actually has been over the South Pole for at least 100 million years so when I say that there were forests in Antarctica people usually say to me "oh well does that mean the Antarctic continent was on the equator?" And that's not the case at all.Geologists have looked at the rocks and they've found signals in the rocks to show us Antarctica was over the South Pole. So that means the earth's climate was much warmer in those days. Probably that's partly because there was higher levels of carbon dioxide. So that's one reason why we look into the past and do these paleoclimate studies, it really is a mirror image of what we might be seeing in future with higher carbon dioxide levels. But also Antarctica was part of a much bigger landmass in the past called Gondwana. And all the southern hemisphere continents were amassed together so there was this big landmass over the pole. So Antarctica wasn't sort of isolated in its icy tomb of water as it is now.
Jane - Yes. Well what we think happened is that the ocean currents that flowed around the equator were warmed up by the equatorial temperatures and because of the position of the coastlines around Gondwana, those warm water masses were pushed all the way down to Antarctica. So they could get rid of all this warm moist air over the continent and keep the continent warm. And then those water currents went back to the equator again and warmed up. Whereas today you see Antarctica is completely isolated, South America, South Africa and Australia moved away millions of years ago. And now we have the circum - Antarctic current and it flows around Antarctica and that keeps it really cold. That water, that current never gets the chance to warm up, and so Antarctica is just frozen inside.
Chris - Doesn't the same thing happen in the air above Antarctica in the sense that you end up with this big sort of whirlpool going round in the air which is why you end up with CFCs and things dumping there which is why we ended up with an ozone hole.
Jane - Yeah it's a very specific, small, climate of it's own above Antarctica. I always think of it as a big deep freeze. It has a big block of ice on it that's up to 3, 4 kilometres thick and it's just sitting there. It's so big it has it's own internal freezer in it.
