CO2 and CH4 - Line 1: bubble-type (with pre-equilibration chamber, vented to surroundings -> pressure in equilibrator = ambient pressure). CO2 - Line 2: bubble-type (with pre-equilibration chamber, vented to surroundings -> pressure in equilibrator = ambient pressure).
CO2 - Line 1: Greenhouse Gas Analyzer DLT 100 Benchtop, type 908-0011. The sensor has been upgraded, now technically more similar to the Los Gatos type 911-0011. CO2 - Line 2: LICOR 6262
CO2 - Line 1: Los Gatos Research (LGR, California). CO2 - Line 2: LICOR (LICOR Inc., Lincoln, Nebraska).
Gülzow et al.,( 2011), Limnol. Oceanogr. Methods, 9: p. 176-184 Schneider et al. (2007), Marine Chemistry, 103(1-2): p. 163-171. Schneider et al.,( 2014), J. Mar. Sys., 140: p. 13-25. Takahashi, T. et al. (1993), Global Biogeochemical Cycles, 7(4): p. 843-878.
