23 December 1994 OH measurements with airborne and satellite instrumentation in the lower and upper stratosphere
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Abstract
The hydroxyl radical (OH) is a principal oxidant in the earth's atmosphere. The OH radical plays an important role in the destruction cycles of ozone and it reacts with greenhouse gases like methane and chlorofluorcarbons. To increase our knowledge about these chemical reactions in the atmosphere there is a need for accurate determinations of the OH concentration profile. For this purpose a Fabry Perot (FP) interferometer can be used on board high flying aircraft and, with modifications on satellites. The FP is optimized to measure the emission of OH in the far infrared, at 118.45 cm-1. The FP can also measure the emission of other species, like H2O and O3. Our computer simulations show that detection is possible when observations are performed above the tropopause, where water vapor concentrations are low. Spectra will be presented which show the expected OH signal at 13 and 20 km observation altitude with a resolution of 0.015 cm-1, a noise level of 10-13 - 10-15 Watt Hz-1/2 and a sounding elevation of 10 degrees.
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Paul de Valk, Paul de Valk, Jan J. Wijnbergen, Jan J. Wijnbergen, Kelly Van Chance, Kelly Van Chance, John P. Burrows, John P. Burrows, Wolfgang Schneider, Wolfgang Schneider, } "OH measurements with airborne and satellite instrumentation in the lower and upper stratosphere", Proc. SPIE 2309, Passive Infrared Remote Sensing of Clouds and the Atmosphere II, (23 December 1994); doi: 10.1117/12.196686; https://doi.org/10.1117/12.196686
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