Why the discovery of methane is difficult but decisive work

In and around Washington, volunteers and activists walk the streets and homes to see how healthy the air is.

They are armed with industry monitors that detect the presence of several gases. The devices look a little like a woki-toki.

But they are equipped with sensors that reveal the degree of methane, turning this invisible gas into concrete numbers on the screen.

These numbers can be worried. For a 25-hour period, researchers in the neighborhood found 13 Outdoor Methane Expiration at concentrations exceeding the lower explosive limit. They have also found methane leaks in homes.

Health is the main concern. Methane and other gases, more specially nitric oxide from gas stoves, are connected to Higher risks of asthmaS

Djamila BAH, a health worker, as well as the leader of tenants of the Montgomery Community Organization, reports that one in three children has asthma in the homes tested by the organization.

“It is very heartbreaking and disturbing when you do testing and then find that some people live in this state that they cannot change so far,” says G -Ja Bach.

Methane can pose a danger to human health, but it is also a powerful greenhouse gas.

Although there is a much more broader life in the atmosphere of carbon dioxide (CO2), methane about a quarter of raising global temperature after industrialization.

Methane emissions come from a diverse set of sectors. The main ones are fossil fuels, waste and agriculture.

But methane is not always easy to notice.

It can be detected with the help of hand gas sensors such as those used by community researchers. It can also be visualized with the help of infrared cameras as methane absorbs infrared light.

Monitoring can be grounded on the base, including vehicles -mounted devices or air, including drone -based measurement. Combination of technology is especially useful.

“There is no perfect solution,” says Andrea Kalkan, a program management employee at the International Methane Evidence Observatory, UN Initiative.

There are compromises between the cost of technology and the scale of the analysis that could extend to thousands of facilities.

Fortunately, over the past decade, it has observed the expansion of affordable methane sensors. So there is no reason to wait for methane monitoring on every scale. And the world has to deal with both small leaks and high events, she says.

On a larger scale satellites are often good at Determination of super-emitters: Lore, but massively radiating events, such as huge oil and gas leaks. Or they can find smaller and more common emitters, which are much more common, such as livestock farms.

Current satellites are usually designed to observe a rock of emitters, says Riley Duren, CEO of Carbon Mapper, a non -profit organization that tracks the emissions.

He likens this to movie cameras. The telephoto lens offers a higher resolution, while the wide-angle lens allows a larger field of view.

With a new Carbon Mapper satellite, it focuses on high resolution, high sensitivity and quick detection to detect more precisely super-emitters. In August 2024, Carbon Mapper launched the Tanager-1 satellite, along with NASA’s jet and Earth Planet Labs Laboratory.

Satellites have struggled to notice methane emissions in certain environments, such as poorly maintained oil wells in snowy areas with lots of vegetation. The low light, the high latitudes, the mountains and the offshore regions are also challenges.

Mr Duren says that high-resolution Tanager-1 can respond to some of these challenges, for example, by essential Peeks sneaking through gaps in the cloud cover or forest cover.

“In a high -resolution oil and gas field, it may be the difference between the isolation of methane emissions from the head of an oil well from a neighboring pipeline,” he says. This can help determine exactly who is responsible.

Carbon Mapper began to release emission data by relying on Tanager-1 observations in November.

It will take several years to build the full constellation of satellites, which will depend on financing.

Tanager-1 is not the only new satellite with focus on the provision of methane data. Methanesat, a project of the Environmental Protection Fund and private and public partners, also started in 2024.

With the increase in the improvement of all these satellite technologies, “what was previously frivolous is now visible,” says G -n Duren. “As a society, we still learn about our true methane footprint.”

It is clear that better information on methane emissions is needed. Some energy companies have strives to avoid the discovery of methane By using “closed forests” to dim gas combustion.

Translating knowledge into action is not always simple. Methane levels continue to increaseEven as the available information does.

For example, the Methane Warning and Reaction System (MARS) uses satellite data to detect methane emissions notifying companies and governments. The Mars team collected a large amount of methane images checked by people to train a machine learning model to recognize such flows.

In all places that Mars constantly monitors, based on their emission history, the model checks for methane for methane every day. The analysts then check all the signals.

Since there are so many places that need to be monitored, “it saves us a lot of time,” says Itziar Irakulis Loitxate, the remote sensory host for the International Methane Emissions Observatory responsible for Mars.

In the two years of its launch, Mars sent over 1,200 signals for large methane leaks. Only 1% of them have led to answersS

However, Irakulis remains optimistic. Some of these signals have led to direct action such as repairs, including cases where the emissions have ceased, although the oil and gas operator does not officially provide feedback.

And communications are improving all the time, says Irakulis. “I hope this 1%will see that it will grow a lot next year.”

At the community level, it is powerful for residents, such as those in the Washington DC region, to take the air pollution and use them to counteract the misinformation. “Now, when we know better, we can do better,” says Joel Novi from the interconfidence and light.