A microwave occultation observing system optimized to characterize atmospheric water, temperature, and geopotential via absorption

E. R. Kursinski, S. Syndergaard, D. Flittner, D. Feng, G. Hajj, B. Herman, Dale M Ward, T. Yunck

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A new remote sensing concept extrapolated from the GPS occultation concept is presented in which the signal frequencies are chosen to determine atmospheric water, temperature, and the geopotential of atmospheric pressure surfaces. Using frequencies near the 22- and 183-GHz water lines allows not only the speed of light to be derived as a GPS occultation but also derivation of profiles of absorption caused by atmospheric water. Given the additional water information, moisture and temperature as well as the geopotential of pressure surfaces can be separated and solved for. Error covariance results indicate that the accuracies of individual water profiles will be 0.5%-3% extending from roughly 1-75-km altitude. Temperature accuracies of individual profiles will be sub-Kelvin from ∼1- to 70-km altitude depending on latitude and season. Accuracies of geopotential heights of pressure will be 10-20 m from the surface to 60-km altitude. These errors are random such that climatological averages derived from this data will be significantly more accurate. Owing to the limb-viewing geometry, the along-track resolution is comparable to the 200-300 km of the GPS occultation observations, but the shorter 22- and 183-GHz wavelengths improve the diffraction-limited vertical resolution to 100-300 m. The technique can be also used to determine profiles of other atmospheric constituents such as upper-tropospheric and stratospheric ozone by using frequencies near strong lines of that constituent. The combined dynamic range, accuracy, vertical resolution, and ability to penetrate clouds far surpass that of any present or planned satellite sensors. A constellation of such sensors would provide an all-weather, global remote sensing capability including full sampling of the diurnal cycle for process studies related to water, climate research, and weather prediction in general.

Original languageEnglish (US)
Pages (from-to)1897-1914
Number of pages18
JournalJournal of Atmospheric and Oceanic Technology
Volume19
Issue number12
StatePublished - Dec 2002

Fingerprint

geopotential
water temperature
Microwaves
GPS
Global positioning system
Water
Remote sensing
remote sensing
weather
water
Temperature
satellite sensor
Water piping systems
surface pressure
Light velocity
Upper atmosphere
Random errors
diffraction
atmospheric pressure
Sensors

ASJC Scopus subject areas

  • Atmospheric Science
  • Ocean Engineering

Cite this

Kursinski, E. R., Syndergaard, S., Flittner, D., Feng, D., Hajj, G., Herman, B., ... Yunck, T. (2002). A microwave occultation observing system optimized to characterize atmospheric water, temperature, and geopotential via absorption. Journal of Atmospheric and Oceanic Technology, 19(12), 1897-1914.

A microwave occultation observing system optimized to characterize atmospheric water, temperature, and geopotential via absorption. / Kursinski, E. R.; Syndergaard, S.; Flittner, D.; Feng, D.; Hajj, G.; Herman, B.; Ward, Dale M; Yunck, T.

In: Journal of Atmospheric and Oceanic Technology, Vol. 19, No. 12, 12.2002, p. 1897-1914.

Research output: Contribution to journalArticle

Kursinski, ER, Syndergaard, S, Flittner, D, Feng, D, Hajj, G, Herman, B, Ward, DM & Yunck, T 2002, 'A microwave occultation observing system optimized to characterize atmospheric water, temperature, and geopotential via absorption', Journal of Atmospheric and Oceanic Technology, vol. 19, no. 12, pp. 1897-1914.
Kursinski, E. R. ; Syndergaard, S. ; Flittner, D. ; Feng, D. ; Hajj, G. ; Herman, B. ; Ward, Dale M ; Yunck, T. / A microwave occultation observing system optimized to characterize atmospheric water, temperature, and geopotential via absorption. In: Journal of Atmospheric and Oceanic Technology. 2002 ; Vol. 19, No. 12. pp. 1897-1914.
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