The geography factor: How environmental conditions shape methane monitoring from space

The report identifies that approximately 30% of global upstream coal and oil and gas infrastructure is located in regions where environmental conditions make satellite methane monitoring challenging. It details how factors such as persistent cloud cover in the tropics, low sun angles in high latitudes, and rugged terrain in mountainous regions limit data availability and accuracy. The authors argue for a multi-tiered observing system that combines satellite data with near-ground measurements to ensure comprehensive emissions monitoring across diverse geographies.

• Approximately 30% of global upstream coal and oil and gas infrastructure is situated in regions where spaceborne instruments face challenges due to dark surfaces, mountainous terrain, low light conditions, and cloud cover.
• Environmental factors impact satellite methane detection differently based on the sensor type: area flux mappers are more constrained by persistent cloud cover and rough terrain, whereas high-resolution point-source sensors may be able to detect plumes between broken clouds or over small flat areas in mountainous regions.
• An estimated 30% of global coal production occurs in challenging-to-monitor regions. Indonesia is highlighted as a particularly difficult area, with 84% of its coal production located in regions where persistent cloudiness and rugged terrain impede monitoring.
• About 29% of global onshore oil and gas production is located in regions with challenging observation conditions, including parts of Canada, Russia, and the United States.
• Specific environmental drivers create distinct regional obstacles: tropical regions are hindered by persistent cloud cover; high latitudes (such as parts of Russia, Canada, and Argentina) suffer from low sun elevation during winter; and mountainous regions (including central Asia, western South America, mid-Western North America, and the western Balkans) create shading and signal interpretation difficulties.
• The report recommends a multi-tiered observing system that integrates satellites as a backbone with complementary near-ground technologies—such as aircraft, drones, ground vehicles, or static sensors—to overcome local environmental constraints and pinpoint emission sources.

APA

Shannon, S., & Binietoglou, I. (2025). The geography factor: How environmental conditions shape methane monitoring from space. Clean Air Task Force. https://cdn.catf.us/wp-content/uploads/2025/03/09125334/geography-factor-environmental-conditions-shape-methane-monitoring-space.pdf

Chicago

Shannon, Sarah, and Ioannis Binietoglou. The geography factor: How environmental conditions shape methane monitoring from space. Clean Air Task Force, 2025. https://cdn.catf.us/wp-content/uploads/2025/03/09125334/geography-factor-environmental-conditions-shape-methane-monitoring-space.pdf.

Wikipedia

{{cite report |last1=Shannon |first1=Sarah |last2=Binietoglou |first2=Ioannis |title=The geography factor: How environmental conditions shape methane monitoring from space |publisher=Clean Air Task Force |date=18 March 2025 |url=https://cdn.catf.us/wp-content/uploads/2025/03/09125334/geography-factor-environmental-conditions-shape-methane-monitoring-space.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{shannon2025geography, author = {Shannon, Sarah and Binietoglou, Ioannis}, title = {{The geography factor: How environmental conditions shape methane monitoring from space}}, institution = {Clean Air Task Force}, year = {2025}, month = mar, url = {https://cdn.catf.us/wp-content/uploads/2025/03/09125334/geography-factor-environmental-conditions-shape-methane-monitoring-space.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }