Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions
The GRACE mission has been providing valuable new information on time variations in the Earth's gravity field since 2002. In addition, the GRACE Follow-On mission is scheduled to be flown soon after the end of life of the GRACE mission in order to minimize the loss of valuable data on the Earth...
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Online Access: | https://dx.doi.org/10.48550/arxiv.1506.05169 https://arxiv.org/abs/1506.05169 |
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ftdatacite:10.48550/arxiv.1506.05169 2023-05-15T18:22:58+02:00 Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions Bender, Peter L. Betts, Casey R. 2015 https://dx.doi.org/10.48550/arxiv.1506.05169 https://arxiv.org/abs/1506.05169 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Space Physics physics.space-ph Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences Preprint Article article CreativeWork 2015 ftdatacite https://doi.org/10.48550/arxiv.1506.05169 2022-04-01T12:02:10Z The GRACE mission has been providing valuable new information on time variations in the Earth's gravity field since 2002. In addition, the GRACE Follow-On mission is scheduled to be flown soon after the end of life of the GRACE mission in order to minimize the loss of valuable data on the Earth's gravity field changes. In view of the major benefits to hydrology and oceanography, as well as to other fields, it is desirable to investigate the fundamental limits to monitoring the time variations in the Earth's gravity field during GRACE-type missions. A simplified model is presented in this paper for making estimates of the effect of differential spurious accelerations of the satellites during times when four successive revolutions cross the Pacific Ocean. The analysis approach discussed is to make use of changes in the satellite separation observed during passages across low latitude regions of the Pacific and of other oceans to correct for spurious accelerations of the satellites. The low latitude regions of the Pacific and of other oceans are the extended regions where the a priori uncertainties in the time variations of the geopotential heights due to mass distribution changes are known best. In addition, advantage can be taken of the repeated crossings of the South Pole and the North Pole, since the uncertainties in changes in the geopotential heights at the poles during the time required for four orbit revolutions are likely to be small. Report South pole DataCite Metadata Store (German National Library of Science and Technology) Pacific South Pole North Pole |
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Space Physics physics.space-ph Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences |
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Space Physics physics.space-ph Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences Bender, Peter L. Betts, Casey R. Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions |
topic_facet |
Space Physics physics.space-ph Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences |
description |
The GRACE mission has been providing valuable new information on time variations in the Earth's gravity field since 2002. In addition, the GRACE Follow-On mission is scheduled to be flown soon after the end of life of the GRACE mission in order to minimize the loss of valuable data on the Earth's gravity field changes. In view of the major benefits to hydrology and oceanography, as well as to other fields, it is desirable to investigate the fundamental limits to monitoring the time variations in the Earth's gravity field during GRACE-type missions. A simplified model is presented in this paper for making estimates of the effect of differential spurious accelerations of the satellites during times when four successive revolutions cross the Pacific Ocean. The analysis approach discussed is to make use of changes in the satellite separation observed during passages across low latitude regions of the Pacific and of other oceans to correct for spurious accelerations of the satellites. The low latitude regions of the Pacific and of other oceans are the extended regions where the a priori uncertainties in the time variations of the geopotential heights due to mass distribution changes are known best. In addition, advantage can be taken of the repeated crossings of the South Pole and the North Pole, since the uncertainties in changes in the geopotential heights at the poles during the time required for four orbit revolutions are likely to be small. |
format |
Report |
author |
Bender, Peter L. Betts, Casey R. |
author_facet |
Bender, Peter L. Betts, Casey R. |
author_sort |
Bender, Peter L. |
title |
Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions |
title_short |
Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions |
title_full |
Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions |
title_fullStr |
Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions |
title_full_unstemmed |
Ocean calibration approach to correcting for spurious accelerations for data from the GRACE and GRACE Follow-On missions |
title_sort |
ocean calibration approach to correcting for spurious accelerations for data from the grace and grace follow-on missions |
publisher |
arXiv |
publishDate |
2015 |
url |
https://dx.doi.org/10.48550/arxiv.1506.05169 https://arxiv.org/abs/1506.05169 |
geographic |
Pacific South Pole North Pole |
geographic_facet |
Pacific South Pole North Pole |
genre |
South pole |
genre_facet |
South pole |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1506.05169 |
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