[omgitsabird]

Speaking of diffuse, how do you sequester something that is at super low concentrations like atmospheric methane?

As an analogy, my home reverse osmosis filter doesn't even come close to touching things that are in the parts per billion.

Also, it isn't as if atmospheric methane is evenly distributed across the globe [0]. How do you expect to collect methane across borders?

[0] - https://svs.gsfc.nasa.gov/4798

[gumby]

Actually CH4 is pretty well distributed, especially in the northern hemisphere . The pictures / videos you linked to were emissions pictures. We have some good concentration maps we generated from from the ESA Copernicus Tropomi data. I don't know how to link to those internal pictures, but you can probably find similar images right on an ESA site or one of the university sites that use the data.

As for concentration: that's an excellent question. I'm not sure how much I should say right now (though as soon as some of the scientists appear on our website it'll be obvious from their publication record, if the comms "team" -- really just part of one person -- hasn't already written more by then). I can tell you that the lab work we are scaling up just used outside air -- a pipe stuck out the window -- as its air source, not some special high concentration mixture made in the lab.

I believe you can buy home water filters that extract higher molecular weight contaminants like arsenic in low ppb levels, but I'm not sure how applicable that really is :-)

[misja111]

Very interesting link! There seem to be huge CH4 emissions coming from China in particular. I wonder why?