# Ground-based spectra showed plumes, the largest about 19,000 tonnes.

> Ground-based spectra showed plumes, the largest about 19,000 tonnes.

Source: https://mysteriesdept.com/mysteries/mars-methane/evidence/EVD0D7EY5184TSS/ground-based-spectra-showed-plumes-the-largest-about-19-000  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Mars methane puzzle](https://mysteriesdept.com/mysteries/mars-methane)Evidence

Evidence · Mars methane puzzle

# Ground-based spectra showed plumes, the largest about 19,000 tonnes.

Ground-based spectra showed plumes, the largest about 19,000 tonnes.

Suggestive0

## What it bears on 1 answer

[Methane was present at the reported levels in 2003–2006 and has since declined or become rarer.](https://mysteriesdept.com/mysteries/mars-methane/answers/ANS0D7EY4HM4YRK/methane-was-present-at-the-reported-levels-in-20032006-and)

Disputed

FOR

## Cite it

```
Mysteries Department. (2026). Ground-based spectra showed plumes, the largest about 19,000 tonnes. [Evidence EVD0D7EY5184TSS]. https://mysteriesdept.com/r/EVD0D7EY5184TSS
```

Key

**EVD** 0D7EY5184TSS

Kind

Evidence

Tier

Suggestive

Version

1

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