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Fig. 6

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SCDs in Brazil (see location Fig. 4). (a) Satellite Google Earth image. (b, c) Vegetation Indexes deduced from the Landsat infrared images showing healthy vegetation in red around SCDs. Note that they highlight three major H2-emitting structures as well as a larger one that encompasses them. (d) Aerosol index showing low concentrations in light blue around SCDs.

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