On the information content in linear horizontal delay gradients estimated from space geodesy observations

Elgered, Gunnar; Ning, Tong; Forkman, Peter; Haas, Rüdiger

doi:https://doi.org/10.5194/amt-12-3805-2019

Articles | Volume 12, issue 7

https://doi.org/10.5194/amt-12-3805-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Advanced Global Navigation Satellite Systems tropospheric...

https://doi.org/10.5194/amt-12-3805-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 7

Research article

|

12 Jul 2019

Research article |

| 12 Jul 2019

On the information content in linear horizontal delay gradients estimated from space geodesy observations

Gunnar Elgered, Tong Ning, Peter Forkman, and Rüdiger Haas

Data sets

On the information content in linear horizontal delay gradients estimated from space geodesy observations G. Elgered, T. Ning, P. Forkman, and R. Haas https://doi.org/10.5878/nswt-yr39

Short summary

Within the EU COST Action ES1206 we have studied the horizontal variability of the atmosphere using signals from GPS satellites, distant quasars, and a microwave radiometer. We find a consistent picture: horizontal variability over timescales of months are mainly due to atmospheric pressure, whereas water vapour is the main cause of variations over times from minutes to hours. An understanding of these variations helps to improve the accuracy of GPS applications in both geodesy and meteorology.