Ozone absorption cross section measurements in the Wulf bands

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Abstract
A tandem dual‐beam spectrometer has been developed to determine ozone absorption cross sections for 13 selected wavelengths between 750 and 975 nm at room temperature. The increasingly pronounced structure in this region may interfere with atmospheric trace gas transitions that are useful for remote sensing and complicate the measurement of aerosols. Ozone concentrations were determined by absorption at the common HeNe laser transition near 632.8 nm using the absolute cross section reported previously. The overall accuracy of these room temperature measurements is generally better than 2%. A synoptic near‐IR spectrum scaled to these measurements is employed for comparison with results of previous studies.