Reconstruction of O3 and N2O fields from ER-2, DC-8, and balloon observations

Computer Science – Sound

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Atmospheric Composition, Atmospheric Sounding, Balloon Sounding, Nitrous Oxides, Ozonometry, Spatial Distribution, Arctic Regions, Atmospheric Pressure, Geopotential Height, Temperature Distribution, Vorticity

Scientific paper

Measurements of N2O and O3 during the Airborne Arctic Stratospheric Expedition have been composited using the potential vorticity and potential temperature of each measurement as coordinates. For ozone, data sources included the ER-2 and balloon ozonesonde in situ measurements, DC-8 DIAL lidar, and Stratospheric Aerosol and Gas Experiment satellite profiles. For N2O, only ER-2 data were used. These chemical composites have been reconstructed onto average meteorological fields for the mission in a latitude-altitude cross section, yielding a picture of the chemical composition of the polar vortex during this period. Tracers inside the vortex show an apparent descent of about 2 km relative to those outside, resulting in an apparent chemical edge on isentropic and isobaric surfaces.

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