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Making methane visible
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi.
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för geologiska vetenskaper.
Rekke forfattare: 42016 (engelsk)Inngår i: Nature Climate Change, ISSN 1758-678X, E-ISSN 1758-6798, Vol. 6, nr 4, s. 426-430Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Methane (CH4) is one of the most important greenhouse gases, and an important energy carrier in biogas and natural gas. Its large-scale emission patterns have been unpredictable and the source and sink distributions are poorly constrained. Remote assessment of CH4 with high sensitivity at a m(2) spatial resolution would allow detailed mapping of the near-ground distribution and anthropogenic sources in landscapes but has hitherto not been possible. Here we show that CH4 gradients can be imaged on the <m(2) scale at ambient levels (similar to 1.8 ppm) and filmed using optimized infrared (IR) hyperspectral imaging. Our approach allows both spectroscopic confirmation and quantification for all pixels in an imaged scene simultaneously. It also has the ability to map fluxes for dynamic scenes. This approach to mapping boundary layer CH4 offers a unique potential way to improve knowledge about greenhouse gases in landscapes and a step towards resolving source-sink attribution and scaling issues.

sted, utgiver, år, opplag, sider
2016. Vol. 6, nr 4, s. 426-430
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-129908DOI: 10.1038/NCLIMATE2877ISI: 000373060000023OAI: oai:DiVA.org:su-129908DiVA, id: diva2:925893
Tilgjengelig fra: 2016-05-03 Laget: 2016-05-03 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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