However, this capability has clear limitations. Satellites cannot reliably detect and quantify emissions under all conditions. Results may be affected by emission magnitude, cloud cover, wind fields, surface reflectance, aerosols, sensor performance, and satellite revisit intervals.<\/p>\n
An end-to-end simulation study published in Remote Sensing<\/em> in 2025 found that, within the matched-filter point-source retrieval framework evaluated by the study, spectral noise, aerosols, surface reflectance, and sensor parameters could all significantly affect retrieval results. For example, when a methane source and its plume are located over a highly reflective surface while the background area has lower reflectance, the resulting reflectance contrast can cause retrieval accuracy to deteriorate rapidly. Under some near-surface aerosol scenarios, aerosol absorption and scattering may also weaken the methane spectral signal and lead to underestimated emission rates.<\/p>\n Real retrieval results from different satellites.<\/em><\/p>\n Satellite observations must therefore be used within their evidentiary limits:<\/p>\n Satellites are better suited to wide-area screening, the detection of major events, and follow-up verification than to replacing fixed sensors, field inspections, or equipment-level testing.<\/p>\n On this basis, a relatively complete governance process typically includes:<\/p>\n Within this chain, a satellite initially provides a lead with potentially high investigative value. Identifying the specific equipment involved, determining the cause of the malfunction, and establishing legal responsibility still require facility data, field measurements, and operational records.<\/p>\n A governance loop does not mean that satellites directly assign responsibility. It means that a major emissions event has a traceable time, location, notified recipient, investigation status, mitigation record, and follow-up result. Assess whether satellite monitoring is suitable for your use case \u2192<\/a><\/p>\n The Algeria case, revisited by UN News in July 2026, illustrates how satellites can bring a long-running emission into the mitigation process.<\/p>\n At the Hassi Messaoud oilfield in eastern Algeria, satellites had long recorded continuous methane emissions from a gas-disposal facility associated with an oil well.<\/p>\n A detailed UNEP report shows that Landsat 5 imagery had already recorded signs of emissions at the site in 1999. From 2013 onward, higher-quality satellite observations repeatedly showed methane plumes. According to UNEP, the emissions appeared in nearly every observation that met the applicable quality requirements.<\/p>\n The International Methane Emissions Observatory (IMEO) subsequently provided its analysis to the Algerian government and the national oil company and engaged with the relevant parties. In October 2024, satellite imagery showed no plume at the site for the first time.<\/p>\n Methane flares in southern Algeria recorded by the Sentinel-2 and Landsat-7 satellites. Credit: IMEO<\/em><\/p>\n UNEP estimated that the avoided annual methane emissions would have a near-term climate impact comparable to the annual emissions of approximately 500,000 passenger vehicles.<\/p>\n Without repeated, cross-regional observation, a long-running emission at a remote facility might never rise high enough on regulatory and maintenance priority lists. The significance of this case lies not only in the scale of the emissions, but also in the way satellite monitoring transformed a persistent emission into a specific event that could be located, reported, and located, reported, and tracked through repeated observations.<\/p>\n The case of Chubut Province in Argentina further demonstrates how satellites can help address limitations in local monitoring capacity.<\/p>\n In November 2024, Chubut\u2019s environmental and sustainable development authority received a methane alert from MARS. The notification included the coordinates of the emissions, the potential operator involved, and an estimated methane emission rate of approximately 4.2 tonnes per hour.<\/p>\n At the time, Chubut Province lacked its own methane measurement tools. After receiving the alert, the local government forwarded the information to the potential operator. The company then conducted a field investigation and traced the emissions to an oil well.<\/p>\n The finding surprised local officials because the relevant geological formation had not previously been considered a typical gas-bearing reservoir. This shows that satellites can not only help identify emission anomalies near known facilities but may also reveal issues that are not fully covered by existing geological or asset knowledge. The company subsequently installed new equipment to recover the excess gas and prevent similar leaks from recurring.<\/p>\n On 8 January 2025, IMEO reported that subsequent satellite imagery no longer detected the previous emissions at the site, providing independent observational evidence consistent with the reported mitigation. According to UNEP, during the period in which IMEO observed the leak, its near-term climate impact was equivalent to the annual emissions of approximately 25,000 cars.<\/p>\n A series of three satellite images show methane detected from oil and gas operations in Argentina and cessation of the emissions following an alert form <\/em>UNEP<\/em>. Credit: <\/em>NASA<\/em> \/ <\/em>Google Earth<\/em><\/p>\n For local governments with limited methane-monitoring resources, satellites lower the barrier to obtaining actionable leads on major emissions. Local authorities do not need to deploy fixed sensors at every oil and gas facility before they can require operators to investigate. Satellites do not, however, replace field verification: they provide an entry point for investigation, while asset operators and relevant technical teams must still identify the specific equipment, determine the cause, and take corrective action. See how satellite data can support your operations \u2192<\/a><\/p>\n The Kazakhstan case further demonstrates how satellite monitoring can be incorporated into field repair and follow-up verification processes.<\/p>\n MARS detected a large methane plume at an oilfield near the Caspian Sea, with an estimated emission rate of approximately 6.9 tonnes per hour. Because the relevant operator was a member of the Oil and Gas Methane Partnership 2.0 (OGMP 2.0), IMEO could notify the company directly in addition to notifying the government focal point, helping reduce the time required to relay the information.<\/p>\n The operator subsequently conducted a field investigation, traced the leak to a worn section of pipeline, and replaced the affected section.<\/p>\n The repair itself was not the end of the governance process. On 7 April 2025, subsequent satellite imagery no longer detected the previous methane plume, and UNEP concluded that the pipeline replacement had achieved the intended result.<\/p>\n Compared with the two previous cases, the value of the Kazakhstan case lies in the way it connected several critical stages: alert delivery, field investigation, equipment repair, and follow-up verification. It also shows that when government communication mechanisms, asset operators, and field response processes are relatively well defined, satellite data can more readily be converted from an environmental alert into concrete field action.<\/p>\n For corporate management, this type of loop can connect methane monitoring with maintenance work orders, equipment records, and environmental performance documentation. For government authorities and regulators, follow-up satellite observations can also provide supplementary verification independent of the operator\u2019s internal reporting.<\/p>\n The change brought by satellites is not limited to the addition of another monitoring tool. It may also help expand oil and gas methane management from an approach centered on annual accounting to one that continuously tracks specific anomalous events.<\/p>\n Traditional annual emissions inventories and satellite alerts answer two different types of questions.<\/p>\n Annual inventories are primarily used to estimate how much methane a company or category of facility emits over a given period. They are suitable for high-level accounting, corporate disclosure, and policy evaluation. Satellite alerts, by contrast, seek to identify major emissions anomalies occurring at a specific time and location, helping governments and companies determine whether an event should receive priority investigation.<\/p>\n The two approaches are not substitutes for one another. Annual inventories provide a long-term baseline, while satellites, fixed sensors, aircraft, drones, and field measurements help identify specific events that deviate from that baseline. This allows companies to establish a continuous anomaly-management mechanism in addition to annual accounting.<\/p>\n This is particularly important for the oil and gas industry. Studies across multiple oil and gas-producing regions have found that methane emissions are often highly unevenly distributed, with a small number of high-emitting facilities or events potentially accounting for a substantial share of total emissions. A single equipment malfunction, abnormal venting event, or worn pipeline may generate emissions far above normal operating levels within a relatively short period.<\/p>\n If companies can detect these events earlier, the value extends beyond emissions reduction. Leaked methane is also natural gas that has not been used or sold. Shortening the duration of a leak can help reduce losses of natural gas products. If an alert promptly triggers field investigation and mitigation, it may also reduce related equipment and safety risks.<\/p>\n The primary value of satellites is therefore not to replace existing methane inventories or field inspections, but to add a layer of wide-area screening: identifying high-emission anomalies that may require immediate action and helping prioritize field resources. Book an application value assessment \u2192<\/a><\/p>\n Detecting an anomaly is only the starting point of event management. Whether satellite monitoring creates practical value depends on whether the observations can enter an organization\u2019s existing assessment, investigation, mitigation, and follow-up systems.<\/p>\n Satellite data may first reach government authorities or an organization\u2019s environmental, climate, and sustainability teams. Facility inspection and repair, however, are generally handled by asset operators and their production, operations, and engineering teams. Without clear mechanisms for receiving, transferring, and responding to information, a satellite-detected anomaly may remain confined to an email, map, or environmental report, while subsequent observations remain disconnected from the results of field action.<\/p>\n For relevant organizations, the key is to connect satellite-monitoring results with facility records, asset information, risk classification, and task-management systems. Initial observations identify and locate anomalies requiring investigation. Government authorities or asset operators then organize field verification, while technical and operational teams identify the specific emissions source and take action. Subsequent remote sensing, field measurements, and mitigation records are then used together to evaluate the outcome.<\/p>\n This mechanism can generate value at three stages:<\/p>\n Potential benefits include improving inspection and regulatory efficiency, optimizing the allocation of field resources, reducing natural gas product losses, lowering equipment risks, and providing supplementary data for environmental disclosure, policy implementation, and regulatory verification.<\/p>\n Satellite observations can provide measured information that is independent of any single organization\u2019s internal reporting system. However, they generally cannot, on their own, establish legal responsibility or determine regulatory compliance. Any such conclusion must also consider field measurements, facility information, operational records, and applicable regulations.<\/p>\n The growing availability of methane observations raises a practical question for governments and operators: how can an external signal be translated into the right internal decision?The answer will vary by organization.Integrating satellite monitoring into investigation and mitigation processes generally requires more than purchasing imagery or connecting to a data interface. Different organizations have different management jurisdictions, asset distributions, facility records, monitoring capabilities, and mitigation mechanisms. The stages at which remote-sensing data can be most effectively applied will therefore also vary.<\/p>\n STARPATH GLOBAL\u2019s FDE Services help organizations apply satellite monitoring data to their own assets and operations. Through the Pioneer Partner Program, qualifying organizations can receive opportunity assessment, solution design, on-site engineering support, pilot validation, and ROI assessment at no cost. FDE engineers work with business, environmental, and technical teams to connect remote-sensing results with asset information and operational workflows, helping turn satellite observations into investigation, response, and follow-up actions. No formal procurement is required until the potential business value has been validated. Explore STARPATH GLOBAL FDE Services \u2192<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" In July 2026, UN News reported that UNEP\u2019s Methane Alert and Response System had issued more than 5,000 alerts concerning major methane emission events across 33 countries. UNEP separately reported that, as of April 2026, IMEO had documented more than 40 mitigation cases. At the time, approximately 13% of MARS alerts had received a recorded […]<\/p>\n","protected":false},"author":3,"featured_media":46569,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[3,652,8792],"tags":[3105,2014,9927,9928,1771,9926,9925,5692,6648],"class_list":["post-46566","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-environment","category-petroleum","tag-algeria","tag-argentina","tag-emissions-verification","tag-imeo","tag-kazakhstan","tag-methane-emissions","tag-oil-gas","tag-petroleum","tag-satellite-monitoring"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/46566"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=46566"}],"version-history":[{"count":4,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/46566\/revisions"}],"predecessor-version":[{"id":46574,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/46566\/revisions\/46574"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/46569"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=46566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=46566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=46566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Real](\"\/wp-content\/uploads\/2026\/07\/Real-retrieval-results-from-different-satellites.webp\")
<\/p>\n\n
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Algeria: Bringing a Long-Running Emission into the Mitigation Process<\/h2>\n
![\"Methane](\"\/wp-content\/uploads\/2026\/07\/Methane-flares-in-southern-Algeria-recorded-by-the-Sentinel-2-and-Landsat-7-satellites.webp\")
<\/p>\nArgentina: Addressing Gaps in Local Monitoring Capacity<\/h2>\n
![\"A](\"\/wp-content\/uploads\/2026\/07\/A-series-of-three-satellite-images-show-methane-detected-from-oil-and-gas-operations-in-Argentina-and-cessation-of-the-emissions-following-an-alert-form-UNEP.webp\")
<\/p>\nKazakhstan: From Alert to Repair and Follow-Up Verification<\/h2>\n
From Annual Emissions Inventories to Continuous Anomaly Management<\/h2>\n
Integrating Satellite Monitoring into Investigation and Mitigation Processes<\/h2>\n
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Closing the Response Loop Through STARPATH GLOBAL FDE Services<\/h2>\n