My source of climate skepticisms is based on the following:

1) We know that the Earth was much warmer in the past, including the Medieval Warming Period. We know that the Alps were warm enough so that the Iceman could pass through them without protection from the cold, and yet he was found encased in ice.

2) We know that the Earth is cooler now than in the past. And it's also hotter than it was in the past.

3) We know that previous historical temperatures had nothing to do with human-produced CO2.

Until someone can reconcile these facts, and they can say distinctively that the rise in temperature we see right now isn't the same reason as before, I'm going to believe that temperature will moderate and cool, just like it did in the past.

I live in California, where we were experienced a ~10 year drought. These same scientists claimed this was the "new normal" and everyone was in a panic. Then we had 2 years of rain and everything was back to normal for the last 4 years. In fact, it's better than normal. We are almost in summer, and there isn't a single area of California that is in drought conditions.

More importantly, no one is mentioning the "new normal" anymore. No one declared "we were wrong, sorry!" instead everyone is acting as if it never happened or that it's going to go back to drought conditions. The reaction is not scientific. It appears that climate science is driven by science fiction and ideology rather than actual science. And I'm quite sure there will be many people who comment "Just you wait and see!" but that's driven by ideology and not science. I prefer to follow actual science, and science to me suggests that climate will always continue to oscillate, on geological timeframes.

There's a lot to unpack here:

- the warming in the Medieval Warming Period is modest compared to projected modern warming

- The Alps are currently "warm enough" to be crossed without special gear much of the year. Otzi was found wearing multiple layers of hides and furs that would have provided good protection against the elements and is supposed to have been killed in late spring/early summer, not the depths of winter. Glaciers are active things and where he was found could be some distance from where he died.

- Yes the earth has been warmer and colder in the past, climate scientists are aware of these facts, it can also be true that climate is changing quickly in ways that may be very inconvenient for many modern humans.

- Regarding California climate, I don't know who "these same scientists" were, and popular press about climate change is often misleading and superficial. I have lived here for ~35 years and we have had a handful of very wet years but most of that period has been classified as "drought". Yes at the moment we are not but this was a very poor water year and we've benefited from carryover storage from last year. As far as I know, the scientific consensus is still that California is getting warmer and drier on average, and the large year to year fluctuations do not nullify that trend.

> Until someone can reconcile these facts, and they can say distinctively that the rise in temperature we see right now isn't the same reason as before, I'm going to believe that temperature will moderate and cool, just like it did in the past.

Have you considered that one of the reasons it's not the same as before is because it's rising at a faster rate than before? It's not just that the temperature is changing but how fast it changes. If it happens slowly enough everything has time to adapt. If the rate of temperature increase happens faster than everything has time to adapt, there's problems.

> 1) We know that the Earth was much warmer in the past, including the Medieval Warming Period. We know that the Alps were warm enough so that the Iceman could pass through them without protection from the cold, and yet he was found encased in ice.

While true that the Alps were much warmer during the Medieval Warming Period, that was a regional weather change, not a global event, the change we're seeing now is global, and sustained, not just in one regional area.

Also, I'd recommend doing some additional research on Ötzi, the Iceman you're likely talking about. First, he died much earlier than the Medieval Warming Period, so they aren't even related. Also, I don't think very many people would describe him as found without protection from the cold, considering he was found with many different animal skin coats to protect him from the cold. And the fact that he died, frozen and encased in ice, further shows how it was indeed actually cold enough to be very dangerous.

> I live in California, where we were experienced a ~10 year drought. These same scientists claimed this was the "new normal" and everyone was in a panic. Then we had 2 years of rain and everything was back to normal for the last 4 years. In fact, it's better than normal. We are almost in summer, and there isn't a single area of California that is in drought conditions.

It totally is annoying how the drought conditions have been communicated to the public, for sure! However, California having a drought for 10 years and then being fine for 4 years is exactly the kind of weather whiplash and volatility that is intensifying due to climate change.

> Until someone can reconcile these facts, and they can say distinctively that the rise in temperature we see right now isn't the same reason as before, I'm going to believe that temperature will moderate and cool, just like it did in the past.

Would you indulge me and see if this one chart might change your mind? It includes each of your data points.

https://xkcd.com/1732/