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Originally shared on Hacker News

Going Blue

An expedition weather app that delivers detailed weather forecasts over low-bandwidth satellite messengers such as Garmin inReach, ZOLEO, and iPhone satellite messaging. It uses an rANS entropy coder fitted on historical weather forecasts to compress about 100 time periods (~4 days of hourly data) into a 160-character message using just a couple bits per variable on average.

Last shared
01 / The problem

What it addresses

Getting detailed weather forecasts through satellite messengers' tiny message limits of about 1,000 bits (160 characters).

02 / Source history

Shared over time

Each entry reflects what was shared on that date. Details may have changed since then.

  1. Going Blue

    An expedition weather app that delivers detailed weather forecasts over low-bandwidth satellite messengers such as Garmin inReach, ZOLEO, and iPhone satellite messaging. It uses an rANS entropy coder fitted on historical weather forecasts to compress about 100 time periods (~4 days of hourly data) into a 160-character message using just a couple bits per variable on average.

    Problem: Getting detailed weather forecasts through satellite messengers' tiny message limits of about 1,000 bits (160 characters).

    Posted by @aaasen · Original comment ↗

    “I'm building an expedition weather app that works via satellite messengers like Garmin inReach, ZOLEO, and iPhone satellite messaging.”