Fig. 2: Annual mean Amazonian CH4 vertical profiles and time series of the below planetary boundary layer, free troposphere and background data. | Communications Earth & Environment

Fig. 2: Annual mean Amazonian CH4 vertical profiles and time series of the below planetary boundary layer, free troposphere and background data.

From: Amazon methane budget derived from multi-year airborne observations highlights regional variations in emissions

Fig. 2: Annual mean Amazonian CH4 vertical profiles and time series of the below planetary boundary layer, free troposphere and background data.

a Annual mean ∆CH4 (profile minus background mole fraction) of vertical profiles measured between 2010 and 2018 (coloured lines) and nine-year mean ∆CH4 (2010–2018; black line). b Mean vertical profiles PBL (red diamonds) and free troposphere (blue diamonds) CH4 at Amazonian sites. Global (black) and tropical Atlantic means (green; mean of NOAA surface sites ASC and RPB located between 17.5°N and 17.5°S). Background CH4 time series from NOAA29.

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