DSdskhatri·Jul 18, 2025Submission
Emission Estimation Model for Flights
2 points · Open discussiongoogle
travel-impact-model
OPEN SOURCE2022–2025
google / travel-impact-model
travel-impact-model
Emission estimation model for flights
3Distinct people
3Mentions
0Explicit recommenders
195GitHub stars
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What it is
Emission estimation model for flights
GitHub
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Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
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Observed mentions: 2022-08-25 18:08:24 UTC to 2025-07-18 19:33:16 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
3 sourcesGoogle/travel-impact-model: Emission estimation model for flights
1 points · Open discussionI can see Google's side of this I think.
The 'multiply by 1.9' thing is a rule of thumb, but they're trying to provide information that will let people choose the lowest carbon option.
So if one company does innovation X (flies 10% faster/slower/higher/lower/earlier/later) and that impacts the non-carbon elements, then they'd probably like to reward them by lowering the number below the rule-of-thumb. But currently they're not very solid on that number and could well be misleading.
https://github.com/google/travel-impact-model/commit/b2225d8...
From reading the changed code, seems like the Google rule of thumb was 1.61 rather than 1.9, and that's the average for all flights thought not all flights have these emissions.
In Google “airbrushes” out emissions from flying, BBC reveals