What wavelengths do satellites use to detect gas flares, and why does that matter?

Flares emit strongly in the shortwave infrared (SWIR, 1.3–2.5 µm) and mid-wave infrared (MWIR, 3–5 µm) bands where combustion temperatures of 1,000–1,700 °C produce peak radiance. Thermal infrared (TIR, 8–12 µm) captures lower-temperature residual heat and smouldering events. A sovereign sensor designed for your basin should cover at least SWIR and MWIR to catch both active flame and hot-spot signatures, whereas visible-light satellites miss flares entirely during daylight hours.

Can a single satellite provide adequate national coverage, or does a country need a constellation?

A single satellite in low Earth orbit passes over any given oilfield once or twice per day at best, leaving gaps of 12 hours or more. Routine flaring violations frequently occur between passes. Effective national enforcement generally requires a constellation of at least 6–12 microsatellites to achieve sub-4-hour revisit at mid-latitudes, or commercial data-sharing agreements that aggregate multiple operators' assets — which reintroduces dependency on third parties.

How does a regulator turn a satellite thermal anomaly into an enforceable fine?

The satellite detection produces a geo-referenced thermal event with timestamp, radiant heat flux, and estimated flare duration. This is matched against the operator's flaring permit — typically specifying allowable volumes and durations — and combined with gas-composition data from ground samples or aerial sensors to estimate volumes flared under the IPCC 2019 Refinement methodology. The jurisdiction then needs legislation that explicitly accepts satellite-derived evidence; several jurisdictions, including the EU under the revised Methane Regulation (2024), now do so, but many producing nations have not yet amended their enforcement codes.

Is VIIRS free data sufficient for a national flaring programme, or do governments need to invest in dedicated sensors?

VIIRS Nightfire data from NOAA/NESDIS, freely available via the Earth Observation Group at Colorado School of Mines, is an excellent starting point and is used by the World Bank's GGFR programme. Its limitations are a ~750 m pixel resolution, a detection floor of roughly 2–3 MW, and a single daily overpass per satellite. For enforcement-grade monitoring — particularly of smaller operators and gathering systems — a dedicated SWIR microsatellite at 30–50 m resolution and sub-2-hour revisit is meaningfully superior.

What is the link between flare monitoring and methane emissions tracking?

Incomplete combustion in a gas flare releases methane directly into the atmosphere alongside CO₂. IPCC emission factors assume 98% combustion efficiency but real-world field studies published by agencies including NOAA and the Environmental Defense Fund suggest efficiencies as low as 85–92% in adverse wind conditions, meaning satellites designed only for thermal detection miss the methane fraction. Pairing a SWIR flare-detection payload with a hyperspectral methane sensor — as GHGSat and MethaneSAT do — provides a complete picture of both the combustion and the fugitive component.

Which nations have built or are building sovereign flare-monitoring satellite capability?

As of 2025, no low-income producing nation operates a dedicated sovereign flare-detection satellite; national capability is confined to a handful of space-faring states that leverage broad-purpose Earth observation programmes (ESA Sentinel-3, JAXA SLSTR on Copernicus, ISRO's Resourcesat-2A SWIR band). Iraq, Nigeria, and Algeria — the world's largest routine flarers by volume — all rely on commercial or international data. This is precisely the governance gap a sovereign nanosatellite or microsatellite programme at modest cost (sub-$80M for a 6-satellite constellation) could close.

How do satellite flare detections interact with national greenhouse gas inventories submitted to the UNFCCC?

National GHG inventories are compiled under IPCC guidelines and submitted annually to the UNFCCC. Flaring and venting from oil and gas are reported under the fugitive emissions category (1B2). Satellite-derived estimates are increasingly used to cross-check self-reported operator data; several countries have found that operator-reported flaring volumes were 30–60% lower than satellite-derived estimates. Owning the sensor means a government controls the authoritative number rather than defending its inventory against third-party satellite evidence it cannot replicate or audit.

What commercial providers currently sell flare detection data, and what are the risks of depending on them?

Key commercial providers include GHGSat (dedicated SWIR microsatellites), Kayrros (SWIR analytics on Sentinel and Landsat), Satellogic (SWIR constellation), and Ursa Space/Orbital Insight for ancillary context layers. The risks of dependency include contractual data-access restrictions, pricing power over sovereign clients, the risk that a provider's licence is suspended by its home-state regulator during a geopolitical dispute, and the absence of any right to ground-truth the provider's methodology. For a nation-state using this data to levy fines on multinational operators, such risks are not theoretical.

11.1.4Live

Flaring Detection

Bright orange gas flare burning at night near an oil facility with dark smoke rising — Fire and black smoke in the night sky mirror the illegal flaring events satellites now expose, protecting communities from hidden pollution.

Satellite Detection of Illegal Gas Flaring

1
Infrared Sensor
Detects heat signature of active flares
2
Downlink
Raw thermal imagery sent to ground stations
3
Analytics Platform
Flare volume, location, and duration calculated
4
Regulator Alert
Compliance reports delivered to energy authorities

Infrared satellites capture flaring events globally, enabling regulators to quantify emissions and enforce compliance with minimal ground inspection.

Page in the build queue

This application has its place in the atlas. The full page — short and long descriptions, what-matters bullets, sovereignty rationale, and the eight-field architecture block — is being written next.

Maturity reading: Operational systems exist with paying customers. Phase 1 built §4.1 (Maritime Intelligence) end-to-end as the depth-and-format reference. Section 4 is the next section to graduate from scaffold to full content; the rest follow on the roadmap.

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