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Temperature profile retrieval from surface to mesopause by combining GNSS radio occultation and passive microwave limb sounder data
Universität Bremen, Institute of Environmental Physics.
University of Graz, Institute for Geophysics, Astrophysics and Meteorology.
Universität Bremen, Institute of Environmental Physics.
2001 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 28, no 5, 775-778 p.Article in journal (Refereed) Published
Abstract [en]

A theoretical study on the combination of a passive microwave and a GNSS radio occultation instrument, mounted on the International Space Station (ISS), was performed. Both instruments allow to deduce the atmospheric temperature profile. We combined realistically simulated data of the two highly synergistic sensors with the optimal estimation method (OEM) and retrieved single joint temperature profiles from 0 to 90 km altitude for which we found accuracies < 1 K below 35 km and < 4 K in the mesosphere, respectively. In addition, we performed simultaneous tropospheric water vapor and temperature retrievals leading to a water vapor accuracy < 10 to 20 % at altitudes below 5 to 8 km. The OEM allows to optimally exploit the synergy in the data and maximizes retrieval accuracy over the full range from surface to mesopause. It seems worthwhile to install this type of instrument combination on the ISS or other low-Earth-orbit (LEO) platforms.

Place, publisher, year, edition, pages
2001. Vol. 28, no 5, 775-778 p.
Research subject
Space Technology
URN: urn:nbn:se:ltu:diva-9404Local ID: 8055bfd0-fd3c-11db-b816-000ea68e967bOAI: diva2:982342
Upprättat; 2001; 20070508 (pafi)Available from: 2016-09-29 Created: 2016-09-29

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