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Originally posted by mc_squared
reply to post by Danbones
Try to spend more time paying attention to detail...
It’s looking likely that soon, for the first time in human existence, CO2 levels will hit 400 ppm. CO2 is one of the main gasses driving global warming, and the last time levels exceeded 400 ppm was roughly 2-3 million years ago. That’s not just a long time ago.
Today the frozen Antarctic ice sheet borders the Southern Ocean. But tropical palm trees once flourished there.
The surprising discovery came from a study of drill cores obtained from the seafloor near Antarctica. The results, published in the journal Nature, show that warm ocean currents and high carbon dioxide (CO2) levels in the air boosted temperatures, allowing tropical vegetation to grow where visitors today meet only icebergs and freezing cold.
The CO2 content of the atmosphere as assumed for that time interval is not enough on its own to explain the almost tropical conditions in the Antarctic," said Jörg Pross, a paleoclimatologist at the Goethe University and member of the Biodiversity and Climate Research Center in Frankfurt, Germany.
A mark of a good hypothesis is that it looks better and better as time passes. With the triumph of plate tectonics, diehard opponents were left redfaced and blustering. In 1960 you’d not get a job in an American geology department if you believed in continental drift, but by 1970 you’d not get the job if you didn’t. That’s what a paradigm shift means in practice and it will happen sometime soon with cosmic rays in climate physics.
Originally posted by MadMax7
And there have been less trees on Earth at no other time than now. They absorb CO2.
I can't find anyone mentioning that?
Originally posted by 727Sky
reply to post by Moshpet
It’s looking likely that soon, for the first time in human existence, CO2 levels will hit 400 ppm. CO2 is one of the main gasses driving global warming, and the last time levels exceeded 400 ppm was roughly 2-3 million years ago. That’s not just a long time ago.
Hummm 2 to 3 million years ago...not that long ago.....supposedly no humans driving cars or flying around and be a cancer on mother earth......must be.... sun, earth, natural climate and atmospheric change.....or there really was an ancient civilization that destroyed itself.....my money is on CLIMATE CHANGE without man made squat. The very article itself says it happened before....History repeats?
I know your graph is suppose to show that the unprecedented rise in greenhouse gas emissions in modern times is this time actually preceding the rise in global temperatures. There we have proof that CO2 is main driver of the global climate.
Our results provide direct experimental evidence for a significant increase in the Earth's greenhouse effect that is consistent with concerns over radiative forcing of climate.
But your point was to show how in recent times, ever increasing greenhouse gas levels are driving the global temperatures.
Originally posted by pasiphae
reply to post by pikestaff
climate depot is backed by lobbyists. how can that be biased information?
mediamatters.org...
whatever they can muster to avoid facing the difficult and uncomfortable facts here.
the models have been proven wrong over and over again because they do not reflect real world effects.
Forecasts of global temperature rises over the past 15 years have proved remarkably accurate, new analysis of scientists' modelling of climate change shows.
The debate around the accuracy of climate modelling and forecasting has been especially intense recently, due to suggestions that forecasts have exaggerated the warming observed so far – and therefore also the level warming that can be expected in the future. But the new research casts serious doubts on these claims, and should give a boost to confidence in scientific predictions of climate change.
The paper, published on Wednesday in the journal Nature Geoscience, explores the performance of a climate forecast based on data up to 1996 by comparing it with the actual temperatures observed since. The results show that scientists accurately predicted the warming experienced in the past decade, relative to the decade to 1996, to within a few hundredths of a degree.
The time to panic and destroy economies and societies is not upon us.
Maybe it is time to ignore the rhetoric and look for a solution.
31,000 scientists reject 'global warming' agenda
In a report released by Spiegel science journal, the admission that the world has been waiting for for a long time is now here: Global Warming has stopped! Spiegel journalist Axel Bojanowski writes “The word has been out for quite some time now that the climate is developing differently than predicted earlier”. He poses the question: “How many more years of stagnation are needed before scientists rethink their predictions of future warming?
In early 2008, the Oregon Institute of Science and Medicine (OISM) published their Petition Project, a list of names from people who all claimed to be scientists and who rejected the science behind the theory of anthropogenic (human-caused) global warming (AGW). This was an attempt to by the OISM to claim that there were far more scientists opposing AGW theory than there are supporting it. This so-called petition took on special importance coming after the release of the Intergovernmental Panel on Climate Change’s Fourth Assessment Report, and specifically the Working Group 1 (WG1) report on the science and attribution of climate change to human civilization.
The WG1 report was authored and reviewed by approximately 2000 scientists with varying expertise in climate and related fields, and so having a list of over 30,000 scientists that rejected the WG1’s conclusions was a powerful meme that AGW skeptics and deniers could use to cast doubt on the IPCC’s conclusions and, indirectly, on the entire theory of climate disruption. And in fact, this meme has become widespread in both legacy and new media today.
It is also false.
Originally posted by 727Sky
reply to post by Kali74
When I was growing up in the 50s and 60s the big scare science was another ice age cometh; but they did not have enough political clout.....