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methane shows up nearly everywhere on

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our planet it can come from a variety of

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sources like wetlands fossil fuels and

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even livestock these diverse sources add

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to the challenge of tracking this potent

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greenhouse gas a molecule of methane is

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able to trap more heat than a co2

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molecule in fact it is the second

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leading gas that is contributing the

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climate change and since the Industrial

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Revolution global methane concentrations

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have doubled its contributed roughly 20

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to 30 percent of the climate change that

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we've experienced to date and so there's

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an urgency and understanding where the

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sources are coming from so that we can

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be better prepared to mitigate methane

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emissions where there are opportunities

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to do so by using a combination of field

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observations airborne surveys and data

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from international partners nASA has

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been able to create a new model of the

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sources and global transport of methane

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this model allows scientists to track

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the global methane budget and better

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understand that changes over time

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everything around methane tends to be a

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few years behind carbon dioxide so we're

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just catching up to how important and

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how dynamic methane is as a greenhouse

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gas we see these pulses of methane in

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different places and when we look deeper

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we understand that those pulses are

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occurring for different reasons so we

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might see wetlands in one region we

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might see industrial pollution in

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another area with this new model we can

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track the pulses of methane across the

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globe to better pinpoint the conditions

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and activities that may cause them

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methane is a difficult gas for us to

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understand given the diversity of

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sources and then how the sources and the

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emissions get transported throughout the

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atmosphere the 3d simulation that we

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produced here helps us better put

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together the entire story for the

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sources of methane and as well as its

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removal from the atmosphere by taking a

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look at the story of methane scientists

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and policymakers can better understand