I’d argue the biggest change was last year. Because of the banning/restrictions of sulfuric emissions from ships trading in the Pacific, a huge quantity of smog was cleared from the atmosphere. Unfortunately for all of us, that smog had been reflecting some sunlight and depressing the effects of climate change in the short term. While those sulfur-based emissions clear out of our atmosphere in as little as 2-3 weeks, carbon emissions take centuries to fully clear out of the atmosphere.

In other words, we had been unintentionally geoengineering the climate to be slightly cooler before 2023. That’s why it was such a huge jump in temperature last year and has no signs of reversing course. The good news about this is that it means that we can geoengineer our climate to be cooler in the short term in order to prevent greater catastrophe because we already were. The bad news is that we likely will have to.