The science instrument payload is geared to supply information on the project science questions by studying daytime photochemistry, nighttime chemistry, aerosol composition and size distribution, the driving radiation fluxes, transport and chemical conversion.
| Proposed scientific payload for NOAA WP-3D Orion aircraft |
| Parameter | Method |
| Ozone (O3) | NO/O3 Chemiluminescence |
| Nitric Oxide (NO) | NO/O3 Chemiluminescence |
| Nitrogen Dioxide (NO2) | Photolysis & NO/O3 Chemiluminescence |
| In-situ volatile organic compounds, VOCs | Proton Transfer Reaction Mass Spectrometer (PTR-MS) |
| Canister VOCs | Canister Sampling, GC/FID, GC-MS |
| Total Nitrogen Oxides (NOy) | Au Converter & NO/O3 Chemiluminescence |
| Carbon Dioxide (CO2) | Non-Dispersive InfraRed (NDIR) |
| Sulfur Dioxide (SO2) | UV Pulsed Fluorescence |
| Carbon Monoxide (CO) | VUV Resonance Fluorescence |
| Formaldehyde (CH2O) | Tunable Diode Laser Absorption Spectrometry |
| PAN's (PAN, PPN) | Chemical Ionization Mass Spectrometer (CIMS) |
| HNO3, NH3 | CIMS |
| Hydroxyl Radical (OH) | CIMS |
| Sulfuric Acid (H2SO4) | CIMS |
| NO3, N2O5 | Cavity Ring-Down Spectroscopy (CARDS) |
| Aerosol Single Particle Composition | Particle Analysis by Laser Mass Spectrometry (PALMS) |
| Aerosol Bulk Ionic Composition | Particle Into Liquid Sampling (PILS) |
| Aerosol Bulk Composition | Aerosol Mass Spectrometer (AMS) |
| Small Aerosol Concentration | Nucleation Mode Aerosol Size Spectrometer (NMASS) |
| Large Aerosol Concentration | White Light Scattering (Climet & LTI/LasAir) |
| Sub-micron Aerosol Scattering & Backscattering (450, 550 and 700 nm) | TSI 3563 Nephelometer |
| Sub-micron Aerosol Absorption (450, 550, 700 nm) dry | Modified Particle Soot Absorption Photometer (PSAP) |
| Backscatter as f(RH) at 2 humidities | Radiance Research Nephelometers |
| Actinic Flux | Spectrally Resolved Radiometer, Zenith & Nadir |
| Broadband Radiation | Pyrgeometer |
| Solar Spectral Irradiance | Solar Flux Radiometer |
| SO2, O3, H2O column | Miniturized Differential Absorption Spectroscopy (MIDAS) |
| Water Vapor (H2O) | Tunable Diode Laser (TDL) |
| Water Vapor (H2O) | Lyman Alpha Absorption |
| Air Temperature | Platinum Resistor |
| Dewpoint/Frostpoint | Dew-/Frost-point Hygrometer |
| Altitude | Barometric, Radar, GPS |
