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Ground-based millimeter-wave observations of water vapor emission (183GHz) at Atacama, Chile
Ground-based millimeter-wave observations of water vapor emission (183GHz) at Atacama, Chile
- Source :
- Advances in Space Research. 42:1167-1171
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- We report the first results of ground-based millimeter-wave measurements of 183 GHz atmospheric water vapor spectra from Atacama highland (4800 m alt.), Chile. The measurements were carried out in December 2005 by using a spectroscopic radiometer equipped with a superconductive heterodyne receiver. A conspicuous H 2 O spectrum at 183 GHz was detected with an integration time of only 1.5 min, and this is the first high frequency-resolution H 2 O spectrum at 183 GHz obtained in the southern subtropical region. The vertical profile of H 2 O volume mixing ratio between 40 and 64 km were retrieved from the spectrum by using the modified optimal estimation method.
- Subjects :
- Time delay and integration
Atmospheric Science
Radiometer
Optimal estimation
Superheterodyne receiver
Aerospace Engineering
Astronomy and Astrophysics
Atmospheric sciences
Spectral line
law.invention
Geophysics
Space and Planetary Science
law
Extremely high frequency
Volume mixing ratio
General Earth and Planetary Sciences
Environmental science
Water vapor
Remote sensing
Subjects
Details
- ISSN :
- 02731177
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Advances in Space Research
- Accession number :
- edsair.doi...........c89ad4b08d6927c8465b270e2bc975e9
- Full Text :
- https://doi.org/10.1016/j.asr.2007.11.030