Datastream : AOSSO2

AOS: Sulfur Dioxide Analyzer

Active Dates
2012.06.24 - 2015.08.26

Measurement Categories
Atmospheric Carbon, Atmospheric State

Originating Instrument
Trace gas concentrations (TRACEGAS)


Only measurements considered scientifically relevant are shown below by default.

Show all measurements

Measurement Units Variable
Altitude above mean sea level m alt
Instrument automatic gain control % automatic_gain_control ( time )
Instrument averaging time seconds averaging_time ( time )
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Instrument flash lamp state 0=off, 1=on unitless flash_lamp_state ( time )
Sample flow l/m flow ( time )
Instrument sample state 0=zero 1=sample unitless gas_mode_state ( time )
Internal instrument temperature degC internal_temp ( time )
Measure of the current lamp intensity as a percentage of the nominal maximum. This will be used as a diagnostic of the lamp aging. % lamp_intensity ( time )
Instrument lamp setpoint count lamp_setpoint ( time )
Lamp voltage V lamp_volt ( time )
North latitude degree_N lat
Length of each flag string in so2_flags field unitless length
East longitude degree_E lon
Instrument PMT status 0=off, 1=on, 2=null unitless pmt_status ( time )
PMT voltage V pmt_volt ( time )
Sample pressure mm Hg pressure ( time )
Instrument pressure compensation state 0=off, 1=on unitless pressure_compensation_state ( time )
Instrument purge mode state 0=off, 1=on unitless purge_mode_state ( time )
Instrument range setting ppbv range ( time )
Reaction chamber temperature degC reaction_chamber_temp ( time )
Sulfur dioxide (SO2) mixing ratio calculated with nominal sensitivity correction ppbv so2 ( time )
Instrument SO2 background correction ppbv so2_background_correction ( time )
Instrument SO2 coefficient unitless so2_coefficient ( time )
SO2 flag string unitless so2_flags ( time, length )
Instrument temperature compensation state 0=off, 1=on unitless temperature_compensation_state ( time )
Instrument test LED state 0=off, 1=on unitless test_led ( time )
Time offset from midnight time ( time )
Time offset from base_time time_offset ( time )


ARM Mobile Facility
MAOS1 Browse DataManacapuru, Amazonas, Brazil; MAOS
PVCS1 Browse Data Browse PlotsHighland Center, Cape Cod MA; MAOS retired
 retired = Originating instrument has been retired at this location