| Session Description |
Signals from GNSS (Global Navigation Satellite Systems), represented by GPS, can effectively be used to observe the behavior of water vapor and temperature in the lower atmosphere and electron density in the ionosphere. From GPS propagation delay in a moist atmosphere, the integrated amount of precipitable water vapor and electron density is accurately estimated by receiving the GPS signals by a receiver located on ground. On the other hand, GPS signals received on Low Earth Orbiting (LEO) satellites are used for an active limb-sounding of the atmosphere, which provides height profiles of water vapor and temperature in the troposphere and stratosphere, and electron density in the ionosphere. Thus, GPS remote sensing has become a powerful tool for scientific research, and it also provides valuable data-sets for assimilation into climate and numerical weather prediction models. This session shall be a forum for discussing recent developments in retrieval techniques, new findings and applications in atmospheric/ionosphere research, as well as technical questions/solutions for operational monitoring of the atmosphere by ground and space based GPS receivers. |
