دورية أكاديمية
Reconstructing GRACE-type time-variable gravity from the Swarm satellites
| العنوان: | Reconstructing GRACE-type time-variable gravity from the Swarm satellites |
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| المؤلفون: | Richter, H. Maja P., Lück, Christina, Klos, Anna, Sideris, Michael G., Rangelova, Elena, Kusche, Jürgen |
| المساهمون: | PROMOS, Deutsche Forschungsgemeinschaft, Ministry of National Defense Republic of Poland Program, Natural Sciences and Engineering Research Council of Canada, Projekt DEAL |
| المصدر: | Scientific Reports ; volume 11, issue 1 ; ISSN 2045-2322 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Multidisciplinary |
| الوصف: | The Gravity Recovery and Climate Experiment (GRACE) mission has enabled mass changes and transports in the hydrosphere, cryosphere and oceans to be quantified with unprecedented resolution. However, while this legacy is currently being continued with the GRACE Follow-On (GRACE-FO) mission there is a gap of 11 months between the end of GRACE and the start of GRACE-FO which must be addressed. Here we bridge the gap by combining time-variable, low-resolution gravity models derived from European Space Agency’s Swarm satellites with the dominating spatial modes of mass variability obtained from GRACE. We show that the noise inherent in unconstrained Swarm gravity solutions is greatly reduced, that basin averages can have root mean square errors reduced to the order of $$\text {cm}$$ cm of equivalent water height, and that useful information can be retrieved for basins as small as $$1000 \times 1000\,\hbox {km}$$ 1000 × 1000 km . It is found that Swarm data contains sufficient information to inform the leading three global mass modes found in GRACE at the least. By comparing monthly reconstructed maps to GRACE data from December 2013 to June 2017, we suggest the uncertainty of these maps to be $$2{-}3\,\text {cm}$$ 2 - 3 cm of equivalent water height. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1038/s41598-020-80752-w |
| الإتاحة: | https://doi.org/10.1038/s41598-020-80752-wTest https://www.nature.com/articles/s41598-020-80752-w.pdfTest https://www.nature.com/articles/s41598-020-80752-wTest |
| حقوق: | https://creativecommons.org/licenses/by/4.0Test ; https://creativecommons.org/licenses/by/4.0Test |
| رقم الانضمام: | edsbas.22338627 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41598-020-80752-w |
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