Abstract
The production and loss of stratospheric OH involve relatively fast reactions that are in near‐photochemical equilibrium. In this study, we compare OH measured by our balloon‐borne far infrared limb observing spectrometer with that predicted from a simple model that uses water and ozone fields obtained from instruments on the upper atmosphere research satellite. This comparison is made for latitudes near 34°N over a full diurnal cycle for five balloon flights that span a period of over 2 years. The ratio of measurement to the photochemical model at 40 km is 0.95, with an uncertainty of 0.08 (at a 90% confidence level) due to the measurement. Comparison at other altitudes and as a function of the diurnal cycle also shows excellent agreement.
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