Trace Organic Gas Analyzer (TOGA)


Operated By: 

TOGA measures volatile organic compounds (VOCs). Specific data will be obtained for radical precursors, tracers of anthropogenic and biogenic activities, tracers of urban and biomass combustion emissions, products of oxidative processing, precursors to aerosol formation, and compounds important for aerosol modification and transformation. TOGA measures a wide range of VOCs with high sensitivity (ppt or lower), frequency (2.0 min.), accuracy (15% or better), and precision (<3%). Over 50 species are routinely measured (see PDF for full table) throughout the full DC-8 altitude range. TOGA is contained in a standard DC-8 rack, weighs less than 200 kg and consumes ~1 kW of power. The major components of the instrument are the inlet, cryogenic preconcentrator, gas chromatograph, mass spectrometer detector, zero air/calibration system, and the control/data acquisition system. All processes and data acquisition are computer controlled.

DC-8 - AFRC, Gulfstream V - NSF, C-130 - NSF, C-130 NSF
Recent Missions: 
TI3GER (Gulfstream V - NSF); FIREX-AQ (DC-8 - AFRC); WE-CAN (C-130 - NSF); ATom (DC-8 - AFRC); ORCAS (Gulfstream V - NSF); CONTRAST (Gulfstream V - NSF)
Complete mission list:
  • TI3GER (Gulfstream V - NSF)
  • FIREX-AQ (DC-8 - AFRC)
  • WE-CAN (C-130 - NSF)
  • ATom (DC-8 - AFRC)
  • ORCAS (Gulfstream V - NSF)
  • CONTRAST (Gulfstream V - NSF)
  • WINTER (C-130 NSF)
  • FRAPPÉ (C-130 - NSF)
  • NOMADSS (C-130 - NSF)
  • DC3 (Gulfstream V - NSF)
  • TORERO (Gulfstream V - NSF)
  • ARCTAS (DC-8 - AFRC)
Point(s) of Contact: 
Eric Apel (POC; PI)