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Proceedings Paper

Toward new scientific observations from GPS occultations: advances in retrieval methods
Author(s): Anthony J. Mannucci; Chi-On Ao; George A. Hajj; Byron A. Iijima; Manuel de la Torre-Juarez; Thomas K. Meehan; Thomas Schroeder
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Paper Abstract

Atmospheric soundings using signals received in low Earth orbit from Global Positioning System (GPS) satellite transmissions are widely recognized as important data for establishing a precise climate record of upper-air temperatures, due to their self-calibrating nature and all-weather acquisition. More recently, advances in retrieval methods using the same GPS data have opened the possibility of new scientific studies related to atmospheric processes and climate change. We will present recent innovations in extracting scientifically useful information from the phase and amplitude of received GPS transmissions, and discuss the technical challenges that need to be overcome to achieve new scientific results. Promising areas being pursued include: remote sensing of the planetary boundary layer from space, important for understanding ocean-atmosphere coupling; retrieving tropopause temperature structure at high vertical resolution, important for understanding troposphere-stratosphere exchange mechanisms and the role of convection; high accuracy and precision of upper altitude (25+ km) retrievals in the stratosphere. Using an end-to-end simulator recently developed at JPL, we will investigate in realistic detail the relationship between the atmospheric state and retrieved scientific parameters, and discuss retrieval research needed to address new scientific applications.

Paper Details

Date Published: 22 December 2004
PDF: 14 pages
Proc. SPIE 5661, Remote Sensing Applications of the Global Positioning System, (22 December 2004); doi: 10.1117/12.580047
Show Author Affiliations
Anthony J. Mannucci, Jet Propulsion Lab. (United States)
Chi-On Ao, Jet Propulsion Lab. (United States)
George A. Hajj, Jet Propulsion Lab. (United States)
Byron A. Iijima, Jet Propulsion Lab. (United States)
Manuel de la Torre-Juarez, Jet Propulsion Lab. (United States)
Thomas K. Meehan, Jet Propulsion Lab. (United States)
Thomas Schroeder, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 5661:
Remote Sensing Applications of the Global Positioning System
Michael Bevis; Yoshinori Shoji; Steven Businger, Editor(s)

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