Spectral Atmospheric Suite (SAS)
Features
The Spectral Atmospheric Suite is a portable, autonomous network of instruments which measures a host of trace gases, including greenhouse gases (GHGs) and urban pollutants.
The network consists of three "nodes", with each node consisting of 1 × Fourier Transform Infrared (FTIR) spectrometer, 1 × Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) instrument, and 1 × automatic weather station.
Each node has the capability of measuring the slant column densities, and from this, the surface concentrations, of the following trace gases:
CO2
CH4
CO
NO2
SO2
Tropospheric O3
HCHO
HONO
Halogen oxides, such as IO and BrO
Glyoxal
Specifications
Fourier Transform Infrared Spectrometer -- Bruker EM27/SUN
Species Measured:
Carbon dioxide (CO2), methane (CH4), carbon monoxide (CO)
Spectral range:
5,000 to 14,5000 cm-1
Spectral reolution:
0.5 cm-1
Multi-Axis Differential Optical Absorption Spectroscopy -- AirYX 2D MAX-DOAS
Spectral range:
UV: 300 nm -- 465 nm, resolution 0.6 nm; VIS: 460 nm -- 600 nm, resolution 0.6 nm
Species Measured:
NO2
SO2
Tropospheric O3
HCHO
HONO
Halogen oxides, such as IO and BrO
Glyoxal
Scanning range:
-10° to 190° in elevation angle; 0° to 180° in azimuth
Automatic weather station -- WXT536 Vaisala Weather Transmitter
The WXT536 measures:
Pressure
Temperature
Humidity
Rain
Wind speed
Wind direction