Ground-based microwave remote sensing of water vapor in the mesosphere and stratosphere

Charles L. Croskey; John J. Olivero; Joseph P. Martone

doi:10.1117/12.46673

1 September 1991 Ground-based microwave remote sensing of water vapor in the mesosphere and stratosphere

Charles L. Croskey, John J. Olivero, Joseph P. Martone

Proceedings Volume 1491, Remote Sensing of Atmospheric Chemistry; (1991) https://doi.org/10.1117/12.46673
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

A ground-based, portable microwave radiometer that will be used to measure water vapor in the 30-80-km altitude region, and is to operate 24 hr a day, is described. The thermally excited 22.235-GHz rotational-transition line of water vapor is employed. The emission from this region produces a signal with an apparent brightness temperature of the order 0.1 to 0.5 K. A steerable reflector is used to provide optimal viewing angles, depending on the geographic location and season. Periodic tipping curve scans by this reflector permit determination of the amount of tropospheric correction that is applied to the data. All local oscillators in the receiver are crystal-controlled so that narrow-band spectral analysis of the received line shape can be performed.

Citation Download Citation

Charles L. Croskey, John J. Olivero, and Joseph P. Martone "Ground-based microwave remote sensing of water vapor in the mesosphere and stratosphere", Proc. SPIE 1491, Remote Sensing of Atmospheric Chemistry, (1 September 1991); https://doi.org/10.1117/12.46673

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