Investigating regional source and sink patterns of Alpine CO2 and CH4 concentrations based on a back trajectory receptor model

Environmental Sciences Europe

Table 2 Overview of the instruments for measurement of CO₂ and CH₄ on the four high-alpine observatories

Site	Greenhouse gas	Model	Manufacturer	Measuring principle
Hoher Sonnblick	CO₂	Uras14 (2000–2012) G2301 (2012–…	ABB Picarro	NDIR
Jungfraujoch	CO₂	G1301 (2010–2011); G2401 (2011.09.16–…)	Picarro Picarro	CRDS
Plateau Rosa	CO₂	Ultramat	Siemens	NDIR
Zugspitze/Schneefernerhaus	CO₂	HP 6890 modified (2001–2012) Envirosense 3000i (2012–2015)	Hewlett Packard/Agilent Picarro	GC, FID (CO₂ reduced to CH₄) CRDS
Hoher Sonnblick	CH₄	G2301	Picarro	CRDS
Jungfraujoch	CH₄	G1301 (2010–2011) G2401 (2011.09.16–…)	Picarro Picarro	CRDS
Plateau Rosa	CH₄	Venus 301	NIRA	GC, FID
Zugspitze/Schneefernerhaus	CH₄	HP 6890 modified (2001–2012) Envirosense 3000i (2012–2015)	Hewlett Packard/Agilent; Picarro	GC, FID (CH₄) CRDS