Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking
peer reviewed 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)...
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ftunivluxembourg:oai:orbilu.uni.lu:10993/3790 2024-04-21T08:03:14+00:00 Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking Weigelt, Matthias van Dam, Tonie Jäggi, Adrian Prange, Lars Tourian, Mohammad J. Keller, Wolfgang Sneeuw, Nico 2013-07 https://orbilu.uni.lu/handle/10993/3790 https://doi.org/10.1002/jgrb.50283 en eng American Geophysical Union (AGU) http://onlinelibrary.wiley.com/doi/10.1002/jgrb.50283/abstract urn:issn:0148-0227 https://orbilu.uni.lu/handle/10993/3790 info:hdl:10993/3790 doi:10.1002/jgrb.50283 scopus-id:2-s2.0-84882743291 wos:000324952300038 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Geophysical Research. Solid Earth, 118, 3848-3859 (2013-07) Time variable gravity CHAMP hl-SST Greenland Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2013 ftunivluxembourg https://doi.org/10.1002/jgrb.50283 2024-03-27T14:10:28Z peer reviewed 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. Article in Journal/Newspaper Greenland University of Luxembourg: ORBilu - Open Repository and Bibliography Journal of Geophysical Research: Solid Earth 118 7 3848 3859 |
institution |
Open Polar |
collection |
University of Luxembourg: ORBilu - Open Repository and Bibliography |
op_collection_id |
ftunivluxembourg |
language |
English |
topic |
Time variable gravity CHAMP hl-SST Greenland Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Time variable gravity CHAMP hl-SST Greenland Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Weigelt, Matthias van Dam, Tonie Jäggi, Adrian Prange, Lars Tourian, Mohammad J. Keller, Wolfgang Sneeuw, Nico Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking |
topic_facet |
Time variable gravity CHAMP hl-SST Greenland Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed 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. |
format |
Article in Journal/Newspaper |
author |
Weigelt, Matthias van Dam, Tonie Jäggi, Adrian Prange, Lars Tourian, Mohammad J. Keller, Wolfgang Sneeuw, Nico |
author_facet |
Weigelt, Matthias van Dam, Tonie Jäggi, Adrian Prange, Lars Tourian, Mohammad J. Keller, Wolfgang Sneeuw, Nico |
author_sort |
Weigelt, Matthias |
title |
Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking |
title_short |
Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking |
title_full |
Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking |
title_fullStr |
Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking |
title_full_unstemmed |
Time-variable gravity signal in Greenland revealed by high-low satellite-to-satellite tracking |
title_sort |
time-variable gravity signal in greenland revealed by high-low satellite-to-satellite tracking |
publisher |
American Geophysical Union (AGU) |
publishDate |
2013 |
url |
https://orbilu.uni.lu/handle/10993/3790 https://doi.org/10.1002/jgrb.50283 |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Journal of Geophysical Research. Solid Earth, 118, 3848-3859 (2013-07) |
op_relation |
http://onlinelibrary.wiley.com/doi/10.1002/jgrb.50283/abstract urn:issn:0148-0227 https://orbilu.uni.lu/handle/10993/3790 info:hdl:10993/3790 doi:10.1002/jgrb.50283 scopus-id:2-s2.0-84882743291 wos:000324952300038 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/jgrb.50283 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
118 |
container_issue |
7 |
container_start_page |
3848 |
op_container_end_page |
3859 |
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1796943176694497280 |