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> Its nice picking your time scales and models to convey a message Yeah, they're totally cherry-picking by only looking at the last four million years. Shockin

by gjm11 10y ago

> Its nice picking your time scales and models to convey a message Yeah, they're totally cherry-picking by only looking at the last four million years. Shocking. You're right that if we go back, say, 100 million years, we find CO2 levels somewhat higher than today. Other things we find: temperatures 20-40 degrees C higher at the poles than today; something like half of Europe and the US under water. (See http://www.ncdc.noaa.gov/paleo/ctl/cliscibeyond.html http://www.ncdc.noaa.gov/paleo/ctl/cliscibeyond.html for a bit more information, though it's not very detailed.) > the sun is heating up before it goes super nova [...] whch is what alot of the global warming fear is based on What? > the biggest threat facing mankind in the next 30 years is the Grand Solar Minimum Take a look at the graph at https://en.wikipedia.org/wiki/Solar_minimum#Grand_solar_minima_and_maxima https://en.wikipedia.org/wiki/Solar_minimum#Grand_solar_mini... and tell us again, if you can with a straight face, that anything like the Dalton minimum (let alone the Maunder minimum) is coming in the next 30 years. > When this occurred we had things like increased volcanic activity So far as I know, there is no reason to think that solar minima cause volcanic activity. It is true that there was a big eruption during the Dalton minimum, which is probably the main actual reason for the "year without a summer". > estimates suggest around 25% of the global population died Whose estimates? > whilst no one wants to create a panic It looks very much as if you do. > no one really knows whether our manmade CO2 is going to benefit us or not No one really knows anything about anything. But you can look in the IPCC reports to see what a bunch of smart well-informed people think are the likely impacts. Or you can throw up your hands and say "no one really knows". Your call.

_red 10y ago
For the vast majority of the earths history there has been no ice at the poles. We are coming out of an ice-age currently which is why there are still some remnants left.
- gjm11 10y ago
  > the vast majority of the earth's history For the great majority of the earth's history there were no humans either, but I personally would be upset at the prospect of that situation recurring. https://en.wikipedia.org/wiki/Antarctic_ice_sheet https://en.wikipedia.org/wiki/Antarctic_ice_sheet seems to indicate that there has been a south polar ice cap for tens of millions of years. https://en.wikipedia.org/wiki/Arctic_sea_ice_ecology_and_history https://en.wikipedia.org/wiki/Arctic_sea_ice_ecology_and_his... suggests that there's less consensus about the north pole but the corresponding figure seems to be probably at least 700,000 years. I'm sure the earth is in no danger from the melting of the ice caps, but that doesn't mean it wouldn't be bad news for us.
  - deleted 10y ago
    [deleted]
tr1ck5t3r 10y ago
Picture says a thousand words. http://static1.squarespace.com/static/56530521e4b0c307d59bbe97/t/56af97fda3360cecbfe34b0e/1454348294881/ http://static1.squarespace.com/static/56530521e4b0c307d59bbe... I get the impression that because you have not heard of this you deny it? http://www.bbc.co.uk/programmes/p005xgcj http://www.bbc.co.uk/programmes/p005xgcj "As the Sun ages, it will gradually become a red giant as its hydrogen fuel begins to run out. Its surface will expand to approximately 100 times its current size as its core shrinks, and the inner Solar System will be engulfed." >So far as I know, there is no reason to think that solar minima cause volcanic activity Apart from the fact volcanic activity stepped up during the last event. >Whose estimates? Read the book by Professor Fagan. Its a long read but worth it. >It looks very much as if you do. Far from it, unless you believe in not informing the public. The IPCC were hacked and exposed. Worth understanding Milgram's obedience to authority. Just whose data do you trust?
- gjm11 10y ago
  > Picture says a thousand words It might have been better if you'd supplied some of those words, because that picture doesn't appear to me to indicate anything on the way as major as the Dalton, let alone the Maunder, minimum. > As the Sun ages [...] Yeah, oddly enough that isn't what I was questioning. You made two claims that are just flatly wrong. (1) That the sun is going to go supernova. Nope, not happening. Wrong sort of star. (2) That increases in the sun's temperature on its way to this alleged supernova are "what alot of the global warming fear is based on". The sun's temperature and luminosity aren't going to change appreciably on a timescale shorter than many million years. > The IPCC were hacked and exposed. What? (Are you mixing up the IPCC with the UEA CRU? The two are entirely different, and the hacks didn't "expose" anything to speak of.)
- Oletros 10y ago
  > Picture says a thousand words. And what we suppose to see in that picture? > "As the Sun ages, it will gradually become a red giant as its hydrogen fuel begins to run out. Its surface will expand to approximately 100 times its current size as its core shrinks, and the inner Solar System will be engulfed." Apart that the Sun won't become a supernova, are you aware of the timeframe involved? It will happen in 5 BILLION years. If you say that global warming alarmism is related to that you're very disillusional. > Apart from the fact volcanic activity stepped up during the last event. Correlation is not causation. If you're so sure, you can provide any paper studying it. > Read the book by Professor Fagan. Its a long read but worth it. So, no single source, you're made it up. > The IPCC were hacked and exposed. Do you really know anything about what you talk? Apart that the IPCC has never been hacked, the ones hacked were the University of East Anglia and nothing was exposed.

by gjm11 10y ago

_red 10y ago

For the vast majority of the earths history there has been no ice at the poles. We are coming out of an ice-age currently which is why there are still some remnants left.

gjm11 10y ago
> the vast majority of the earth's history For the great majority of the earth's history there were no humans either, but I personally would be upset at the prospect of that situation recurring. https://en.wikipedia.org/wiki/Antarctic_ice_sheet https://en.wikipedia.org/wiki/Antarctic_ice_sheet seems to indicate that there has been a south polar ice cap for tens of millions of years. https://en.wikipedia.org/wiki/Arctic_sea_ice_ecology_and_history https://en.wikipedia.org/wiki/Arctic_sea_ice_ecology_and_his... suggests that there's less consensus about the north pole but the corresponding figure seems to be probably at least 700,000 years. I'm sure the earth is in no danger from the melting of the ice caps, but that doesn't mean it wouldn't be bad news for us.
- deleted 10y ago
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tr1ck5t3r 10y ago

Picture says a thousand words. http://static1.squarespace.com/static/56530521e4b0c307d59bbe97/t/56af97fda3360cecbfe34b0e/1454348294881/ http://static1.squarespace.com/static/56530521e4b0c307d59bbe... I get the impression that because you have not heard of this you deny it? http://www.bbc.co.uk/programmes/p005xgcj http://www.bbc.co.uk/programmes/p005xgcj "As the Sun ages, it will gradually become a red giant as its hydrogen fuel begins to run out. Its surface will expand to approximately 100 times its current size as its core shrinks, and the inner Solar System will be engulfed." >So far as I know, there is no reason to think that solar minima cause volcanic activity Apart from the fact volcanic activity stepped up during the last event. >Whose estimates? Read the book by Professor Fagan. Its a long read but worth it. >It looks very much as if you do. Far from it, unless you believe in not informing the public. The IPCC were hacked and exposed. Worth understanding Milgram's obedience to authority. Just whose data do you trust?

gjm11 10y ago
> Picture says a thousand words It might have been better if you'd supplied some of those words, because that picture doesn't appear to me to indicate anything on the way as major as the Dalton, let alone the Maunder, minimum. > As the Sun ages [...] Yeah, oddly enough that isn't what I was questioning. You made two claims that are just flatly wrong. (1) That the sun is going to go supernova. Nope, not happening. Wrong sort of star. (2) That increases in the sun's temperature on its way to this alleged supernova are "what alot of the global warming fear is based on". The sun's temperature and luminosity aren't going to change appreciably on a timescale shorter than many million years. > The IPCC were hacked and exposed. What? (Are you mixing up the IPCC with the UEA CRU? The two are entirely different, and the hacks didn't "expose" anything to speak of.)
Oletros 10y ago
> Picture says a thousand words. And what we suppose to see in that picture? > "As the Sun ages, it will gradually become a red giant as its hydrogen fuel begins to run out. Its surface will expand to approximately 100 times its current size as its core shrinks, and the inner Solar System will be engulfed." Apart that the Sun won't become a supernova, are you aware of the timeframe involved? It will happen in 5 BILLION years. If you say that global warming alarmism is related to that you're very disillusional. > Apart from the fact volcanic activity stepped up during the last event. Correlation is not causation. If you're so sure, you can provide any paper studying it. > Read the book by Professor Fagan. Its a long read but worth it. So, no single source, you're made it up. > The IPCC were hacked and exposed. Do you really know anything about what you talk? Apart that the IPCC has never been hacked, the ones hacked were the University of East Anglia and nothing was exposed.