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be comforted by the fact that in the past CO2 levels have increased to many times the present 400 ppm with little or no warming effect.
This is not totally accurate. In fact as I pointed out earlier, the planet experienced widespread regions of glaciation during some of those periods. Does this contradict the warming effect of CO2? No, for one simple reason. CO2 is not the only driver of climate. To understand past climate, we need to include other forcings that drive climate.
Both of the terms in question are used frequently in the scientific literature, because they refer to two different physical phenomena. As the name suggests, 'global warming' refers to the long-term trend of a rising average global temperature.
Climate change', again as the name suggests, refers to the changes in the global climate which result from the increasing average global temperature.
It's too complicated for anyone to accurately measure.
Interpretation = It's too complicated for you to understand how it's measured.
Independent studies using different software, different methods, and different data sets yield very similar results. The increase in temperatures since 1975 is a consistent feature of all reconstructions. This increase cannot be explained as an artifact of the adjustment process, the decrease in station numbers, or other non-climatological factors. Natural temperature measurements also confirm the general accuracy of the instrumental temperature record.
***CO2 levels are measured by hundreds of stations scattered across 66 countries which all report the same rising trend.***
David Viner, a senior research scientist at the climatic research unit (CRU) of the University of East Anglia predicted in 2000 that within a few years winter snowfall would become “a very rare and exciting event. Children just aren’t going to know what snow is....yup I have a lot of faith in these
supposedly expert climatogists...
The question isn't a silly as it sounds. It is entire possible that as the planet warms in aggregate, parts of it would be systematically and considerably colder. One example is what evidently happened as the past ice-age was ending... overall warming trend (unmistakable, no?) --> north Atlantic ice melts/retreats --> impedes flow of the Gulf Stream --> Northwestern Europe feels considerably colder - for centuries. Imagine cavemen meteorologists in Europe 10,000 (or however many) years ago, bemoaning the colder winters and calling conclusion of the ice-age a hoax.
Personally, I marvel how often it happens every winter, that the temperature in my part of the world (SW Ohio) is colder than in NW Russia (I pick that region for personal reasons). Imagine... a greater than 20 degree difference in latitude, and yet, here in the American lower Midwest, so often it's considerably colder.
Unfortunately this trend has been accelerating in America for decades. Notice that one of the most reviled professions in America is that of college professor!
Yes, and it seems like you cannot mention someone going to college or having a degree wothout sone blowhard denigrating education.
Poor Trump supporters, they don't understand the difference between climate and weather.
But they're so upbeat and spunky when creating threads like this one, convinced that they're "sticking it to" the 852 scientists from across the globe who agree climate change is real.
An historic polar vortex gripped a wide swath of the nation Wednesday, with temperatures plunging far below zero and wind chill numbers as absurd as they are dangerous.
Imagine that, a right winger who still doesn't understand how global warming works
Imagine that. The only defense for the "global warming" argument is to call someone names.
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