
Ah I mixed up light and bright haha
But I still think solarpunk may be a bit darker than even “bright”, as technology is not only the tools to make the change, but technology is one aspect of it and direct change in the political and economical system is needed as well.
It has mostly to do with water temperatures. Tropical cyclones need at least 27°C. Then, tjey can’t form too close to the equator due to coriolis force. Some addittional factors play a role, that leave these areas.
Note: It shows December temperatures, meaning that the northern hemisphere oceans would be warmer in actual hurricane season.