Barra and logosLocation: 56°58’21.74″N, 7°28’16.61″W

The Barra site has been operational since Q3, 2010 with continuous concentration measurements of CO2 and CH4 using a cavity ringdown spectrometer (Picarro G1301).

Tedlar bag sampling is performed every 7 days and analysis performed at Royal Holloway to determine δ13C on CH as well as CH4 and CO2 concentrations.

Instrument calibration is currently unscheduled and done on an adhoc basis when field time allows.