When people state that they've seen the effects of climate change..
How old are they? They must have lived for thousands of years to have been able to observe these changes.
The planet is 4,000,000,000 years old (ish), therefore 4,000,000,000 (ish) of weather and climate.
If the average temp is 0.02 degrees warmer than last year or the other year or whatever then how can you draw any conclusions from it given the miniscule pluck of data?
We've about 80 or so years of temperature records, less for global data, for the most part these weren't very accurate, the conditions where temperatures have been recorded have changed so difficult to really conclude anything.
If we get some hot or cold weather that we've not had in a region for 10, 100, 1000, or 10000 years you still can't really draw any specific conclusions from it given we're talking about 4,000,000,000 years of history.
The correlation between temperatures and Co2 is not that stark and breaks down over the last 15 years. With ice-core samples it showed that Co2 rises follows temperature rises when the oceans warm and degass.
It's been colder, hotter, dryer, wetter, the Co2 has been lower, it's been much, much higher yet the only time bad things seem to have happened was when it was cold (huge storms). For the most part the Earth has been ice-free.
The press are putting out these panic-stricken stories implying that a tiny increase in average temperature over a dataset of only a few years is proof that mankind is fucking things up. But the reality is, whether we're affecting the climate or not the rate of change is tiny and it's always changed. In a hundred years all our fossil-fuel shenanigans will be obsolete and the Co2 we emit will have long dropped and the world will continue doing what it's always done. They're spending an absolute fortune studying a problem that isn't really a problem, there's a million more pressing issues facing humans which are being ignored because of the obsession with the weather.