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It is a fact, based on observations of air temperature, that the rate of global warming measured as surface air temperature has slowed over the past 15 years. The last decade is still the warmest in the past 150 years.
If you measure global heat content then global warming has not slowed. If you measure other indices including sea level rise or ocean temperatures or sea ice cover global warming has not slowed.
The 5th Assessment Report by the IPCC explains the slowing in the rate of global warming in roughly equal terms as the consequence of reduced radiative forcing (the difference between radiative energy that hits the earth and energy radiated back to space), increased heat uptake by the oceans and natural variability.
The reduced radiative forcing (the amount of energy available to drive the climate system) is due to the recent solar minimum (a period of low solar activity), and volcanic and anthropogenic aerosols (these are particles such as sulphur and soot, which block some radiation from hitting the earth).
The slowing in the rate of warming over the last 15 years is not in the least surprising. We have seen a combination of the solar minimum, anthropogenic aerosol emissions and back-to-back La Niñas.
What is surprising – and what is deeply concerning to me and almost entirely missed in the media commentary – is that we have not cooled dramatically over the last 15 years.
Kali74
reply to post by Tinkerpeach
It's not good because oceans will continue to acidify and temperatures will start to rise again, past the point humans can live in. The planet will be fine, it will recover... we won't.
And even if we indulge your fantasy that global warming is a good thing for just a minute... it will mean massive migrations, growing our food in different places, living different places. Does our current state of government give any indication that this will be done smoothly and with our liberty preserved?edit on 24-9-2013 by Kali74 because: (no reason given)
My main complaint is the brazen globalization agenda using carbon dioxide as the excuse. It was a poorly planned ruse, if it was me I would have at least picked a greenhouse gas like methane. It really does tend to argue against the competence of the architects of the NWO.
You can't stop it no matter what you do.
Its a natural occurring event.
Keeping the world at an optimal temp for human existence is not within our control.
Kali74
reply to post by greencmp
My main complaint is the brazen globalization agenda using carbon dioxide as the excuse. It was a poorly planned ruse, if it was me I would have at least picked a greenhouse gas like methane. It really does tend to argue against the competence of the architects of the NWO.
Illustrate this for us please.
boymonkey74
All this bickering is gonna get us nowhere.
I personally think we have contributed to GW based on the data I have seen and the actual weather changes I have seen in the past 10 years or so.
The question is can we afford to do nothing? nope we must do something otherwise in the next 20 years millions will be displaced, fresh water will be harder to get and arable land destroyed.
I would hate to think future generations will look at our posts and think "bloody idiots they wrecked the joint and did nothing".
Kali74
reply to post by Tinkerpeach
It's not good because oceans will continue to acidify and temperatures will start to rise again, past the point humans can live in. The planet will be fine, it will recover... we won't.
And even if we indulge your fantasy that global warming is a good thing for just a minute... it will mean massive migrations, growing our food in different places, living different places. Does our current state of government give any indication that this will be done smoothly and with our liberty preserved?edit on 24-9-2013 by Kali74 because: (no reason given)
Isotopes are the Key
How can we distinguish between the different sources and sinks of carbon dioxide? Carbon dioxide, or CO2, contains the key piece of information within the carbon atoms themselves. Although it may seem that a carbon atom is just the same as every other carbon atom out there (perhaps they appear to all be clones of each other–where each looks and acts exactly the same), this is not the case.
In fact there are three isotopes of carbon atoms - all three react the same way in chemical reactions–the only chemical difference between them is that they have slightly different masses. The heaviest is carbon-14 (which, in the scientific world, is written as 14C), followed by carbon-13 (13C), and the lightest, most common carbon-12 (12C). Different carbon reservoirs “like” different isotopes, so the relative proportion of the three isotopes is different in each reservoir - each has its own, identifying, isotopic fingerprint. By examining the isotopic mixture in the atmosphere, and knowing the isotopic fingerprint of each reservoir, atmospheric scientists can determine how much carbon dioxide is coming and going from each reservoir, making isotopes an ideal tracer of sources and sinks of carbon dioxide.