Show HN: 41 years sea surface temperature anomalies

41 years of ocean heat — viewers beg for a faster panic button

TLDR: A slick 41‑year timelapse shows the oceans warming and highlights big moments like reef bleaching and hurricane wake. Commenters beg for a faster, one‑minute speedrun, drop “boiling frog” doom quips, and a veteran creator claims prior art—sparking a mix of climate angst, feature requests, and builder brag vibes.

An interactive timelapse by Will Meyers turns 41 years of ocean temperature anomaly data—how much warmer or cooler the water is than normal—into a hypnotic, horrifying show. It zips from 1985 to today with scenes like the Great Barrier Reef’s 2016 bleaching, Hurricane Katrina’s cold wake, and the Gulf Stream twisting off the U.S. coast—and the crowd is feeling it.

The loudest chorus? “Make it faster!” Viewers want a one‑minute speedrun to ingest decades of warming in a single, gut‑punching gulp. One commenter called it “very emotionally powerful,” another pushed for “larger speeds and timesteps,” and a third dropped the meme-y mood bomb: “We’re frogs, slowly boiling ourselves…” It’s climate doomscrolling, but on autoplay.

Then came a classic internet moment: a veteran builder popped in with a humblebrag—they made something like this 10 years ago—and now they’re fired up to update their visuals and data. Cue the friendly rivalry energy: new hotness vs. old guard. Meanwhile, others just chant “More of this!” because nothing says Sunday scaries like watching the oceans glow red.

Between the anxiety, the speed cravings, and the builder flexes, this is part science lesson, part emotional rollercoaster—and the comments are the front row seats.

Key Points

  • Interactive timelapse shows daily sea surface temperature anomalies from January 1985 to the present.
  • Data source is NOAA Coral Reef Watch 5km SSTA v3.1.
  • Color scale ranges from −5°C to +5°C to represent anomalies.
  • Highlighted examples include tropical instability waves, 2016 Great Barrier Reef bleaching, Gulf Stream meander (Aug 15, 2023), and Hurricane Katrina’s cold wake (Aug 31, 2005).
  • Interface provides playback controls (play/pause, step, speed, reset) and options for product, projection, color scale, and jumping to a date.

Hottest takes

“We’re frogs, slowly boiling ourselves…” — HumblyTossed
“Very emotionally powerful… watch the whole dataset in about 1 minute” — zug_zug
“I made something like this 10 years ago” — callumprentice
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