I admit data collection is imperfect, especially looking back 200 years. But to attack a fairly sound hypothesis that is multi factorially demonstrated in physical geological behavior, I wholeheartedly disagree with.

Just because US weather stations in the 70’s were more rural than urban does not in itself gives credence to the idea that climate change/warming/ greenhouse gases is a nonissue or somehow a totally misunderstood non-warming phenomenon. Even a climate that tended to one mean value zero standard deviation throughout the year would be devastating coming from our current temporal and geographical distribution.

Your point about weather stations is a technical detail in data collection while there are several other corroborating methods indicating a warming ocean and atmosphere, albeit not geographically uniformly distributed. But you have this gotcha fact about weather stations ambient baseline temp vs some platonic ideal temp that reflects what’s going on in the abstract notion of a climate.

The sea ice has satellite photo analysis (area) dating to 70’s or 80’s with daily or weekly granularity.

I cannot convince a climate change denier or skeptic but am leaving that comment and this one hoping that observers don’t just take your initial counter-fact to be a valid falsifying argument.

As everyone says weather is not the climate, spurious yearly data do not nullify long form trends, and I’d just look at low pass filtered or line fit or yearly average of granular image data to argue that there is a time localize trend since the 80’s consistent with a warming ocean.

I disagree with you I think you used logical fallacies to misdirect and cause skepticism about something that is fairly corroborated and the debate needs to focus on mitigation or investment or policy changes.

> you mean the sea ice, that had the highest extent in 20 years this year?

Your link says it's "the seventh highest recorded since 2006 when this metric from IMS was first tracked consistently". Where are you getting "highest extent in 20 years"?