Table 1 List of trace gas measurements discussed in this paper and associated instruments. Unless mentioned otherwise, measurements were continuous from October 2019 to September 2020.
From: Year-round trace gas measurements in the central Arctic during the MOSAiC expedition
Trace gas | Frequency | Time resolution | Sampling location | Instruments |
|---|---|---|---|---|
CO2 | Continuous | 0.1 s | Met City | Cavity ring-down spectrometer (Picarro model G2311-f) |
Continuous | 0.1 s | CU container | Cavity ring-down spectrometer (Picarro model G2311-f) | |
Continuous | 1 s | Swiss container | Cavity ring-down spectrometer (Picarro model G2401) | |
Discrete | ~weekly | Clean air sector | Cavity ring-down spectrometer | |
CH4 | Continuous | 0.1 s | Met City | Cavity ring-down spectrometer (Picarro model G2311-f) |
Continuous | 0.1 s | CU container | Cavity ring-down spectrometer (Picarro model G2311-f) | |
Continuous | 1 s | Swiss container | Cavity ring-down spectrometer (Picarro model G2401) | |
Discrete | ~weekly | Clean air sector | Cavity ring-down spectrometer | |
CO | Continuous | 1 s | ARM container | Off-axis integrated cavity output spectroscope (Los Gatos Research model 098-0014) |
Continuous | 1 s | Swiss container | Cavity ring-down spectrometer (Picarro model G2401) | |
Discrete | ~weekly | Clean air sector | Tunable Infrared Laser Direct Absorption Spectroscopy (Aerodyne model CS-108) | |
N2O | Continuous | 1 s | ARM container | Off-axis integrated cavity output spectroscope (Los Gatos Research model 098-0014) |
Discrete | ~weekly | Clean air sector | Tunable Infrared Laser Direct Absorption Spectroscopy (Aerodyne model CS-108) | |
O3 | Continuous | 1 s | ARM container | Ultraviolet absorption spectroscopy (Thermo Fisher Scientific model 49i) |
Continuous | 1 min | CU container | Ultraviolet absorption spectroscopy (Thermo Environmental Instruments model 49c) | |
Continuous | 10 s | Swiss container | Ultraviolet absorption spectroscopy (2B Technologies model 205) | |
DMS (June-Sept. 2020) | Continuous | 0.1 s | CU container | Atmospheric Pressure Ionization Mass Spectrometer (custom fabrication) |
Discrete | 3 hours | CU container | Gas chromatography with flame photometric detection (Shimadzu GC8/FPD) | |
SO2 | Continuous | 1 min | Swiss container | Pulsed fluorescence (Thermo Fisher Scientific model 43i) |
Hg(0) | Continuous | 15 min | CU container | Cold vapor atomic fluorescence spectrometer (Tekran model 2537B) |
VOCs | Continuous | 3 hours | CU container | In-situ air sampling with custom-build inlet system and gas chromatograph/mass spectrometry analysis |
Discrete | ~weekly | Clean air sector | Mass spectrometry |
