Fig. 1: Monthly trend of CH4 mole fractions observed at Alpine stations and Mace Head. | Communications Earth & Environment

Fig. 1: Monthly trend of CH4 mole fractions observed at Alpine stations and Mace Head.

From: Methane record at Plateau Rosa confirms its role as background station with episodic sensitivity to European emissions

Fig. 1: Monthly trend of CH4 mole fractions observed at Alpine stations and Mace Head.

a Averaged monthly values of measured CH4 mole fractions, including enhancements, at Plateau Rosa, PRS (in black), Zugspitze, ZSF (in red), Jungfraujoch, JFJ (in orange) and monthly baseline for Mace Head, MHD (in blue). ZSF and JFJ mole fractions are taken from ICOS, MHD mole fractions are retrieved from AGAGE (Advanced Global Atmospheric Gases Experiment); b Seasonal cycle for PRS (grey diamonds) and MHD (blue circles). Error bars represent the σ of monthly values.

Back to article page