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Proceedings Paper

Deriving atmospheric water vapor and ozone profiles from active microwave occultation measurements
Author(s): Dasheng Feng; Stig Syndergaard; Benjamin M. Herman; E. Robert Kursinski; T. P. Yunck; F. W. Romberg
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Paper Abstract

The GPS/MET experiment was the first active atmospheric microwave occultation experiment using the existing GPS Li and L2 frequencies to measure the atmospheric refractive index. One major limitation to this tecimique is that the presence of water vapor in amounts typically found in the lower troposphere (below 5-7 km) causes an ambiguity between the contributions of dry air and moisture to the refractive index. Additionally the profiles of other gases, such as ozone, cannot be measured using the Li and L2 frequencies. A new satellite remote sensing technique to independently monitor atmospheric water vapor and ozone is under development. It will include small satellites with both transmitter and receiver capabilities on each. The frequencies will be located around the 22 and 183 GHz water vapor and the i95 GHz ozone absorption lines. The receivers will also have the capability to observe the Li and L2 GPS frequencies. Simulation studies show that this new active occultation technique has the potential to provide accurate profiles of water vapor and ozone, as well as refractivity, temperature and pressure.

Paper Details

Date Published: 9 February 2001
PDF: 10 pages
Proc. SPIE 4169, Sensors, Systems, and Next-Generation Satellites IV, (9 February 2001); doi: 10.1117/12.417135
Show Author Affiliations
Dasheng Feng, Univ. of Arizona (United States)
Stig Syndergaard, Univ. of Arizona (United States)
Benjamin M. Herman, Univ. of Arizona (United States)
E. Robert Kursinski, Univ. of Arizona (United States)
T. P. Yunck, Jet Propulsion Lab. (United States)
F. W. Romberg, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 4169:
Sensors, Systems, and Next-Generation Satellites IV
Hiroyuki Fujisada; Joan B. Lurie; Alexander Ropertz; Konradin Weber, Editor(s)

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