Print Email Facebook Twitter Time-variable gravity fields derived from GPS tracking of Swarm Title Time-variable gravity fields derived from GPS tracking of Swarm Author Bezděk, Aleš (Czech Academy of Sciences and Arts) Sebera, Josef (Czech Academy of Sciences and Arts) De Teixeira Da Encarnação, J. (TU Delft Astrodynamics & Space Missions) Klokočnik, Jaroslav (Czech Academy of Sciences and Arts) Date 2016-06-01 Abstract Since 2002 Gravity Recovery and Climate Experiment (GRACE) provides monthly gravity fields from K-band ranging (KBR) between two GRACE satellites. These KBR gravity monthlies have enabled the global observation of time-varying Earth mass signal at a regional scale (about 400 km resolution). Apart from KBR, monthly gravity solutions can be computed from onboard GPS data. The newly reprocessed GPS monthlies from 13 yr of GRACE data are shown to yield correct time-variable gravity signal (seasonality, trends, interannual variations) at a spatial resolution of 1300 km (harmonic degree 15). We show that GPS fields from new Swarm mission are of similar quality as GRACE GPS monthlies. Thus, Swarm GPS monthlies represent new and independent source of information on time-variable gravity, and, although with lower resolution and accuracy, they can be used for its monitoring, particularly if GRACE KBR/GPS data become unavailable before GRACE Follow-On is launched (2017 August). Subject Global change from geodesySatellite geodesyTime variable gravity To reference this document use: http://resolver.tudelft.nl/uuid:7f99e680-3fc4-41ce-941d-4697b96ecf28 DOI https://doi.org/10.1093/gji/ggw094 ISSN 0956-540X Source Geophysical Journal International, 205 (3), 1665-1669 Part of collection Institutional Repository Document type journal article Rights © 2016 Aleš Bezděk, Josef Sebera, J. De Teixeira Da Encarnação, Jaroslav Klokočnik Files PDF ggw094.pdf 906.36 KB Close viewer /islandora/object/uuid:7f99e680-3fc4-41ce-941d-4697b96ecf28/datastream/OBJ/view