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Methane plumes over arid farmland, Tanager-1 imaging spectrometer

Data

Carbon mapping

Methane and CO2 plumes at 30 m, attributed to the emitting facility and quantified in kg/h.

Pixel
30 m
Methane detection
64–126 kg/h
  • GHGSat25 m17 satellitesGHGSat
  • Tanager30 mPlanet
Pixel
30 m
Methane detection
64–126 kg/h
CO2 detection
10–19 t/h
Spectrometer
380–2500 nm
Coverage
18 km swath
Orbit
~430 km, sun-synchronous

Detection

A source’s emission rate against the published detection limits, with its yearly total and CO₂ equivalent.

1101001,00010,000100,000Methane, kg/hTanager-1PRISMA, EnMAP, EMITSentinel-2, LandsatSentinel-5P TROPOMI
Tanager-1 first plumes, 2024
Emission rate
Per year
CO2e, 100-year
CO2e, 20-year

Published limits under each source’s own conditions. CO2e: IPCC AR6, fossil methane.

Bands

Methane absorbs at 1.65 and 2.3 µm, CO₂ at 1.61 and 2.06 µm. Tanager reads all four at ~5 nm.

150017001900210023002500CO2 1.61 µmCH4 1.65 µmCO2 2.06 µmCH4 2.3 µmTanager, from 380 nm
2250–2350 nm
Spectral sampling
~5 nm
Channels
~426
Range
380–2500 nm
Bands read
CH4 1.65 and 2.3 µm · CO2 1.61 and 2.06 µm

Pixel

The same plume at 30 m and 5.5 × 7 km. A large pixel averages it into the background.

52000 ppb
Peak pixel, ΔXCH4
Plume above 100 ppb

Model: steady Gaussian plume, neutral stability, 3 × 2 km frame. Enhancement above background.

Gallery

Select a frame to open it at full resolution.

Several methane plumes over arid farmland, Tanager-1

Detects

  • Methane from oil and gas sites, coal mines, landfills and industry
  • The emitting facility, not only the region around it
  • Emission rate in kg/h, from the plume and the wind
  • CO2 from power stations and heavy industry