Microwave spectroscopy of H2O in the stratosphere and mesosphere

Details Microwave spectroscopy of H2O in the stratosphere and mesosphere Microwave spectroscopy of H2O in the stratosphere and mesosphere

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.305..294s&link_type=abstract

Nature (ISSN 0028-0836), vol. 305, Sept. 22, 1983, p. 294, 295.

Computer Science

16

Atmospheric Moisture, Mesosphere, Microwave Spectra, Molecular Spectroscopy, Stratosphere, Emission Spectra, Vertical Distribution

Scientific paper

Data from use of a microwave atmospheric sensor which observes the 6(16)-5(23)H2O transition at 22.2 GHz are reported. The instrument is intended for ground-based spectroscopic observations of minor atmospheric constituents in the middle atmosphere, and functions over a 40 MHz bandwidth with 391 kHz resolution for a 110 min integration. A symmetrized and truncated version of the observed spectrum was compared with an inverted profile to determine the quality of the inversion profile, and average profiles below 50 km were compared with data from the Nimbus-7 Limb IR Monitor (LIMS). A steeper H2O gradient than expected was found above 70 km altitude. The values obtained with the new receiver were, however, consistent with the LIMS measurements, with the caveat that the middle atmospheric H2O values change on a scale of days.

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