Abstract

Limb sounding of mesospheric water vapor using pure rotational emission in the long‐wavelength infrared region has been demonstrated using data from the ELC‐1 rocket experiment, launched in October, 1983. By simultaneously analyzing H2O emission at 23–29 µm and CO2 emission in the ν2 band region, effects due to uncertainties in the atmospheric temperature and instrument calibration are minimized. The H2O profile obtained from ELC‐1 is consistent with other fall to early‐winter measurements. Given accurate line‐of‐sight pointing information, this approach will be feasible for global mesospheric H2O sounding from limb‐viewing satellites.

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