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• Overall CalNex Schedule
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  NOAA WP-3D, R/V Atlantis
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WP-3D Instrumentation

During intensive field campaigns, one of NOAA's four-engine Lockheed WP-3D Orions is instrumented to provide a highly sophisticated airborne air chemistry and aerosol research platform. This aircraft makes in situ measurements of a wide suite of atmospheric species, most on a one- second time scale, which gives approximately 100m spatial resolution. The operating range of the WP-3D is ample to permit sampling of the primary pollution source regions, and to follow the transport and transformation of their emissions throughout California and surrounding regions.

Species measured by the WP-3D can include:

• Primary pollutants: CO, NO, NO₂, SO₂, NMHC, CO₂, NH₃, PM, oxygenated VOC, black carbon, and targeted greenhouse gases.
• Secondary species: O₃, CH₂O, other aldehydes, PAN-type compounds, HNO₃, NO₃, N₂O₅, sulfuric acid, hydroxyl and peroxy radicals, aerosol size distribution and chemical composition.
• Other parameters: H₂O, aerosol extinction and absorption, cloud properties including cloud condensation nuclei, actinic flux and broadband radiation.