SLR, GRACE and SWARM gravity field determination and combination
At the Astronomical Institute of the University of Bern (AIUB) long time-series (1995 - 2017) of low resolution (spherical harmonic degree/order 6) gravity field coefficients have been determined from a combination of LAGEOS and geodetic SLR satellites in low Earth orbit, namely: Beacon-C, Ajisai, S...
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ftunivbern:oai:boris.unibe.ch:132229 2023-08-20T04:06:55+02:00 SLR, GRACE and SWARM gravity field determination and combination Meyer, Ulrich Sosnica, Krzsztof Andritsch, Florian Dach, Rolf Jäggi, Adrian König, Daniel Thaller, Daniela 2019-04 application/pdf https://boris.unibe.ch/132229/1/EGU2019_SLR.pdf https://boris.unibe.ch/132229/ eng eng https://boris.unibe.ch/132229/ info:eu-repo/semantics/openAccess Meyer, Ulrich; Sosnica, Krzsztof; Andritsch, Florian; Dach, Rolf; Jäggi, Adrian; König, Daniel; Thaller, Daniela (April 2019). SLR, GRACE and SWARM gravity field determination and combination (Unpublished). In: EGU General Assembly 2019. Vienna, Austria. April 08-12, 2019. 520 Astronomy info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/draft NonPeerReviewed 2019 ftunivbern 2023-07-31T21:53:12Z At the Astronomical Institute of the University of Bern (AIUB) long time-series (1995 - 2017) of low resolution (spherical harmonic degree/order 6) gravity field coefficients have been determined from a combination of LAGEOS and geodetic SLR satellites in low Earth orbit, namely: Beacon-C, Ajisai, Starlette, Stella, Larets, and Lares. Monthly gravity fields, excluding degree 1 terms, are co-estimated with orbits (10-day LAGEOS and 1-day LEO arcs), station coordinates, range biases, geocenter variations and Earth orientation parameters. For the period 2003-2016 also GRACE monthly gravity fields were produced at AIUB with a significantly higher resolution (degree/order 90). After truncation of the gravity field corresponding to SLR the derived mass variations match well in selected areas with strong mass transport signals and SLR can thus serve to shed light on mass transport in the pre-GRACE period. Finally monthly gravity fields have been determined from high-low tracking data of the three SWARM satellites and are combined with SLR at normal equation level. The combined gravity fields turn out to be well suited for Greenland ice mass observation at low spatial resolution and therefore bridge the gap between GRACE and GRACE-FO. Conference Object Greenland BORIS (Bern Open Repository and Information System, University of Bern) Greenland Stella ENVELOPE(-64.254,-64.254,-65.249,-65.249) |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
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English |
topic |
520 Astronomy |
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520 Astronomy Meyer, Ulrich Sosnica, Krzsztof Andritsch, Florian Dach, Rolf Jäggi, Adrian König, Daniel Thaller, Daniela SLR, GRACE and SWARM gravity field determination and combination |
topic_facet |
520 Astronomy |
description |
At the Astronomical Institute of the University of Bern (AIUB) long time-series (1995 - 2017) of low resolution (spherical harmonic degree/order 6) gravity field coefficients have been determined from a combination of LAGEOS and geodetic SLR satellites in low Earth orbit, namely: Beacon-C, Ajisai, Starlette, Stella, Larets, and Lares. Monthly gravity fields, excluding degree 1 terms, are co-estimated with orbits (10-day LAGEOS and 1-day LEO arcs), station coordinates, range biases, geocenter variations and Earth orientation parameters. For the period 2003-2016 also GRACE monthly gravity fields were produced at AIUB with a significantly higher resolution (degree/order 90). After truncation of the gravity field corresponding to SLR the derived mass variations match well in selected areas with strong mass transport signals and SLR can thus serve to shed light on mass transport in the pre-GRACE period. Finally monthly gravity fields have been determined from high-low tracking data of the three SWARM satellites and are combined with SLR at normal equation level. The combined gravity fields turn out to be well suited for Greenland ice mass observation at low spatial resolution and therefore bridge the gap between GRACE and GRACE-FO. |
format |
Conference Object |
author |
Meyer, Ulrich Sosnica, Krzsztof Andritsch, Florian Dach, Rolf Jäggi, Adrian König, Daniel Thaller, Daniela |
author_facet |
Meyer, Ulrich Sosnica, Krzsztof Andritsch, Florian Dach, Rolf Jäggi, Adrian König, Daniel Thaller, Daniela |
author_sort |
Meyer, Ulrich |
title |
SLR, GRACE and SWARM gravity field determination and combination |
title_short |
SLR, GRACE and SWARM gravity field determination and combination |
title_full |
SLR, GRACE and SWARM gravity field determination and combination |
title_fullStr |
SLR, GRACE and SWARM gravity field determination and combination |
title_full_unstemmed |
SLR, GRACE and SWARM gravity field determination and combination |
title_sort |
slr, grace and swarm gravity field determination and combination |
publishDate |
2019 |
url |
https://boris.unibe.ch/132229/1/EGU2019_SLR.pdf https://boris.unibe.ch/132229/ |
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ENVELOPE(-64.254,-64.254,-65.249,-65.249) |
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Greenland Stella |
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Greenland Stella |
genre |
Greenland |
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Greenland |
op_source |
Meyer, Ulrich; Sosnica, Krzsztof; Andritsch, Florian; Dach, Rolf; Jäggi, Adrian; König, Daniel; Thaller, Daniela (April 2019). SLR, GRACE and SWARM gravity field determination and combination (Unpublished). In: EGU General Assembly 2019. Vienna, Austria. April 08-12, 2019. |
op_relation |
https://boris.unibe.ch/132229/ |
op_rights |
info:eu-repo/semantics/openAccess |
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1774718301354590208 |