A colorful knitted beanie with a pattern of red, orange, yellow, and blue stripes, topped with a small pom-pom. The hat is lying flat on a wooden surface. The stripes correspond to temperature above or below baseline. After Ed Hawkins climate warming stripes data visualization. The stripes at the top are very dark red (2023 at tip) and those nearer the opening are gradually more shades of blue.
https://files.mastodon.green/media_attachments/files/113/809/836/368/658/848/original/0bfbc3415075a400.jpeg