References of "Jäggi, Adrian"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailA warmer world
van Dam, Tonie UL; Weigelt, Matthias UL; Jäggi, Adrian

in Pan European Networks (2015), (14), 58-59

Detailed reference viewed: 286 (24 UL)
Full Text
See detailTime varying gravity from SLR and combined SLR and high-low satellite-to-satellite tracking data
Sośnica, Krzysztof; Jäggi, Adrian; Weigelt, Matthias UL et al

Scientific Conference (2014, September 30)

Detailed reference viewed: 79 (0 UL)
Full Text
See detailHow well can the combination of hlSST and SLR replace GRACE? A discussion from the point of view of applications
Weigelt, Matthias UL; van Dam, Tonie UL; Baur, Oliver et al

Scientific Conference (2014, September 30)

Detailed reference viewed: 190 (3 UL)
Full Text
See detailGOCE Precise Science Orbits for the entire mission and their use for Gravity Field Recovery
Jäggi, Adrian; Bock, Heike; Meyer, Ulrich et al

Scientific Conference (2014, August)

Detailed reference viewed: 94 (5 UL)
Full Text
See detailTowards combined global monthly gravity field solutions
Jäggi, Adrian; Meyer, Ulrich; Weigelt, Matthias UL et al

Scientific Conference (2014, April)

Detailed reference viewed: 103 (0 UL)
Full Text
See detailOn the capability of Swarm for surface mass variation monitoring: Quantitative assessment based on orbit information from CHAMP, GRACE and GOCE
Baur, Oliver; Weigelt, Matthias UL; Zehentner, Norbert et al

Scientific Conference (2014, April)

Detailed reference viewed: 69 (0 UL)
Full Text
Peer Reviewed
See detailTime-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking
Weigelt, Matthias UL; van Dam, Tonie UL; Jäggi, Adrian et al

in Journal of Geophysical Research. Solid Earth (2013), 118

In the event of a termination of the GRACE mission before the launch of GRACE Follow-On (due for launch in 2017) high-low satellite-to-satellite tracking (hl-SST) will be the only dedicated observing ... [more ▼]

In the event of a termination of the GRACE mission before the launch of GRACE Follow-On (due for launch in 2017) high-low satellite-to-satellite tracking (hl-SST) will be the only dedicated observing system with global coverage available to measure the time variable gravity field (TVG) on a monthly or even shorter time scale. Until recently, hl-SST TVG observations were of poor quality and hardly improved the performance of Satellite Laser Ranging observations. To date, they have been of only very limited usefulness to geophysical or environmental investigations. In this paper, we apply a thorough reprocessing strategy and a dedicated Kalman filter to CHAMP data to demonstrate that it is possible to derive the very long wavelength TVG features down to spatial scales of approximately 2000 km at the annual frequency and for multi-year trends. The results are validated against GRACE data and surface height changes from long-term GPS ground stations in Greenland. We find that the quality of the CHAMP solutions is sufficient to derive long-term trends and annual amplitudes of mass change over Greenland. We conclude that hl-SST is a viable source of information for TVG and can serve to some extent to bridge a possible gap between the end-of-life of GRACE and the availability of Grace Follow-On. [less ▲]

Detailed reference viewed: 193 (27 UL)
Full Text
See detailLong-term mass changes over Greenland derived from high-low satellite-to-satellite tracking
Weigelt, Matthias UL; van Dam, Tonie UL; Jäggi, Adrian et al

Poster (2013, April)

In the last decade, temporal variations of the global gravity field have become an ubiquitous and invaluable source of information for geophysical and environmental studies. It is important that the time ... [more ▼]

In the last decade, temporal variations of the global gravity field have become an ubiquitous and invaluable source of information for geophysical and environmental studies. It is important that the time series of observations is not interrupted as some geophysical phenomena, e.g. postglacial rebound or long term ice mass trends, are only beginning to be observable. To date, the most valuable source for time variable gravity (TVG) is the GRACE mission which has already exceeded its nominal lifetime. It can cease operations any time now and then only high-low satellite-to-satellite (hl-SST) observations will be available. These observations have, however, only demonstrated limited application for TVG. In this presentation, we show that by using CHAMP data, a thorough reprocessing strategy and a dedicated Kalman filter it is possible to derive the very long wavelength features of the time variable gravity field. The results are validated against GRACE data and height coordinates from long-term GPS ground stations in Greenland. We find that the quality of the CHAMP solutions is sufficient to derive realistic long-term trends and annual amplitudes of mass changes of Greenland. We conclude that hl-SST would be a viable substitute (although at lower spatial resolution) for TVG in the event of a profund operational breakdown of GRACE. [less ▲]

Detailed reference viewed: 101 (5 UL)