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You might listen, but when you're done listening you declare facts that contradict Republican dogma to be junk science. You claimed that no one had compared volcanic and anthropogenic CO2 emissions. When I proved you wrong, you declared it to be junk science. You didn't show this to be the case or even try, you just declared it to be so.
I guess he doen't accept that carbon has several isotopes and the mix of isotopes is different depending on thew source of carbon. Hence, it is possible to identify if the source of carbon is natural or from burning fossil fuels. Much of the increase since 1750 comes from burning fossil fuels. If our world had stayed as it was in 1750 the natural processes wouldn't have changed the amount of CO2 from the level it had since the end of the last ice age. The only catch is we would have to kill 6 billion people, and erase all technology created since 1750. Any one up to the challenge?
I guess he doen't accept that carbon has several isotopes and the mix of isotopes is different depending on thew source of carbon.
Couldn't say, because he didn't make any argument. He just stated that it had never been measured then declared it to be junk science when showed otherwise.
I agree...The temperature was flat from 1492 till 1890, and has been rising rapidly ever since.
In the 1970s, most scientists were claiming that temps were falling. In fact, the theory was we would have another ice age. Of course, the earth has had natural heating and cooling cycles since it was created. In the last century there were temperature peaks in the 30s, 50s, and 80s and cooling periods between. I just don't think that the Climate Change proponents have proved that this is anything but a natural warm cycle.
In the 1970s, most scientists were claiming that temps were falling. In fact, the theory was we would have another ice age. Of course, the earth has had natural heating and cooling cycles since it was created. In the last century there were temperature peaks in the 30s, 50s, and 80s and cooling periods between. I just don't think that the Climate Change proponents have proved that this is anything but a natural warm cycle.
Modern instrument records began in 1663. Before that time it is really hard to compare because the proxies are not all that reliable, and have huge margins of error. Now, it is 100% true that the past 50 years have been the warmest on record, but sometimes it's nice to take the derivative so see the velocity, acceleration, and jerk associated with the warming.
Here we go with a 50 year running average.
In summary:
There is nothing unusual about the warming in terms of velocity, acceleration, and jerk, but there is in terms of magnitude. This is likely because we have been recovering from the last cool spell for more than 400 years.
In the 1970s, most scientists were claiming that temps were falling. In fact, the theory was we would have another ice age. Of course, the earth has had natural heating and cooling cycles since it was created. In the last century there were temperature peaks in the 30s, 50s, and 80s and cooling periods between. I just don't think that the Climate Change proponents have proved that this is anything but a natural warm cycle.
Well you would be wrong. The supposed "global cooling" consensus among scientists in the 1970s — frequently offered by global-warming skeptics as proof that climatologists can't make up their minds — is a myth, according to a survey of the scientific literature of the era. Study debunks 'global cooling' concern of '70s - USATODAY.com
What you think does not change the fact that the earth is warming, and we are the cause... The Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
Certain facts about Earth's climate are not in dispute:
The heat-trapping nature of carbon dioxide and other gases was demonstrated in the mid-19th century. Their ability to affect the transfer of infrared energy through the atmosphere is the scientific basis of many instruments flown by NASA. Increased levels of greenhouse gases must cause the Earth to warm in response.
Modern instrument records began in 1663. Before that time it is really hard to compare because the proxies are not all that reliable, and have huge margins of error. Now, it is 100% true that the past 50 years have been the warmest on record, but sometimes it's nice to take the derivative so see the velocity, acceleration, and jerk associated with the warming.
Here we go with a 50 year running average.
In summary:
There is nothing unusual about the warming in terms of velocity, acceleration, and jerk, but there is in terms of magnitude. This is likely because we have been recovering from the last cool spell for more than 400 years.
I'm not sure where the three graphs came from, or what area they represent, as I was not able to find them on the Met Office site, but your link is to a temperature graph of central England only.
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