Agricultural Methane Simulator

Sources

Cattle herd size 30 head

Rice paddy area 60%

Mitigation strategies

Live readout

CH4 flux

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Mitigation

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CO2-eq accumulated

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GWP-100 factor

×28

How it works

Three point-sources emit methane at different rates: cattle belch methane produced by microbes fermenting fibre in the rumen (enteric fermentation), flooded rice soil ferments organic matter anaerobically, and stored manure decomposes without oxygen. Each source's bubble stream is scaled by its live flux; a translucent haze layer accumulates overhead as CO2-equivalent, using methane's 100-year global warming potential.

flux = herd·enteric·(1-0.45·additive)
     + paddy·riceRate·(1-0.40·AWD)
     + herd·manureRate·(1-0.65·digester)
CO2e += flux·GWP100·dt

Feed additive — compounds like 3-NOP or the red seaweed Asparagopsis inhibit the rumen enzyme that makes methane, cutting enteric emissions roughly 30-80% in trials.
Rice AWD — alternate wetting and drying lets paddy soil re-oxygenate between floods, suppressing the methanogens that thrive only when soil is waterlogged.
Manure digester — captures the methane a manure pit would otherwise vent and burns or uses it as biogas instead of releasing it.

Enteric fermentation from ruminants is the single largest anthropogenic methane source in agriculture (roughly 30% of human-caused CH4); flooded rice and manure management follow behind it.

Atmospheric CH4 buildup

Cattle (enteric) Rice paddy Manure

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