This is cool, but why not using rigorous statistics? Block maxima (e.g daily max temperature) follow a generalized extreme value (GEV) distribution. One can t

This is cool, but why not using rigorous statistics? Block maxima (e.g daily max temperature) follow a generalized extreme value (GEV) distribution. One can try to see whether this distribution is stationary or not. Things can get much fancier by e.g. modeling correlations across cities but the above is pretty basic. A great practical intro is: https://link.springer.com/book/10.1007/978-1-4471-3675-0 https://link.springer.com/book/10.1007/978-1-4471-3675-0