International Combination Service for Time-Variable Gravity Fields (COST-G): Start of Operational Phase and Future Perspectives

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • Adrian Jäggi
  • Ulrich Meyer
  • Martin Lasser
  • Barbara Jenny
  • Teodolina Lopez
  • Frank Flechtner
  • Christoph Dahle
  • Christoph Förste
  • Torsten Mayer-Gürr
  • Andreas Kvas
  • Jean Michel Lemoine
  • Stéphane Bourgogne
  • Matthias Weigelt
  • Andreas Groh

Research Organisations

External Research Organisations

  • University of Bern
  • Helmholtz Centre Potsdam - German Research Centre for Geosciences (GFZ)
  • Graz University of Technology
  • Centre national d’études spatiales (CNES)
  • Esplanade Compans Caffarelli
  • Technische Universität Dresden
View graph of relations

Details

Original languageEnglish
Title of host publicationBeyond 100
Subtitle of host publicationThe Next Century in Geodesy - Proceedings of the IAG General Assembly, 2019
EditorsJeffrey T. Freymueller, Laura Sánchez
PublisherSpringer Science and Business Media Deutschland GmbH
Pages57-65
Number of pages9
ISBN (electronic)978-3-031-09857-4
ISBN (print)9783031098567
Publication statusPublished - 2023
Event27th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2019 - Montreal, Canada
Duration: 8 Jul 201918 Jul 2019

Publication series

NameInternational Association of Geodesy Symposia
Volume152
ISSN (Print)0939-9585
ISSN (electronic)2197-9359

Abstract

The International Combination Service for Time-variable Gravity Fields (COST-G) is a new Product Center of IAG’s International Gravity Field Service (IGFS). COST-G provides consolidated monthly global gravity fields in terms of spherical harmonic coefficients and thereof derived grids of surface mass changes by combining existing solutions or normal equations from COST-G analysis centers (ACs) and partner analysis centers (PCs). The COST-G ACs adopt different analysis methods but apply agreed-upon consistent processing standards to deliver time-variable gravity field models, e.g. from GRACE/GRACE-FO low-low satellite-to-satellite tracking (ll-SST), GPS high-low satellite-to-satellite tracking (hl-SST) and Satellite Laser Ranging (SLR). The organizational structure of COST-G and results from the first release of combined monthly GRACE solutions covering the entire GRACE time period are discussed in this article. It is shown that by combining solutions and normal equations from different sources COST-G is taking advantage of the statistical properties of the various solutions, which results in a reduced noise level compared to the individual input solutions.

Keywords

    Combined solutions, COST-G, IGFS Product Center, Time variable gravity

ASJC Scopus subject areas

Cite this

International Combination Service for Time-Variable Gravity Fields (COST-G): Start of Operational Phase and Future Perspectives. / Jäggi, Adrian; Meyer, Ulrich; Lasser, Martin et al.
Beyond 100: The Next Century in Geodesy - Proceedings of the IAG General Assembly, 2019. ed. / Jeffrey T. Freymueller; Laura Sánchez. Springer Science and Business Media Deutschland GmbH, 2023. p. 57-65 (International Association of Geodesy Symposia; Vol. 152).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Jäggi, A, Meyer, U, Lasser, M, Jenny, B, Lopez, T, Flechtner, F, Dahle, C, Förste, C, Mayer-Gürr, T, Kvas, A, Lemoine, JM, Bourgogne, S, Weigelt, M & Groh, A 2023, International Combination Service for Time-Variable Gravity Fields (COST-G): Start of Operational Phase and Future Perspectives. in JT Freymueller & L Sánchez (eds), Beyond 100: The Next Century in Geodesy - Proceedings of the IAG General Assembly, 2019. International Association of Geodesy Symposia, vol. 152, Springer Science and Business Media Deutschland GmbH, pp. 57-65, 27th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2019, Montreal, Canada, 8 Jul 2019. https://doi.org/10.1007/1345_2020_109
Jäggi, A., Meyer, U., Lasser, M., Jenny, B., Lopez, T., Flechtner, F., Dahle, C., Förste, C., Mayer-Gürr, T., Kvas, A., Lemoine, J. M., Bourgogne, S., Weigelt, M., & Groh, A. (2023). International Combination Service for Time-Variable Gravity Fields (COST-G): Start of Operational Phase and Future Perspectives. In J. T. Freymueller, & L. Sánchez (Eds.), Beyond 100: The Next Century in Geodesy - Proceedings of the IAG General Assembly, 2019 (pp. 57-65). (International Association of Geodesy Symposia; Vol. 152). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/1345_2020_109
Jäggi A, Meyer U, Lasser M, Jenny B, Lopez T, Flechtner F et al. International Combination Service for Time-Variable Gravity Fields (COST-G): Start of Operational Phase and Future Perspectives. In Freymueller JT, Sánchez L, editors, Beyond 100: The Next Century in Geodesy - Proceedings of the IAG General Assembly, 2019. Springer Science and Business Media Deutschland GmbH. 2023. p. 57-65. (International Association of Geodesy Symposia). Epub 2020 May 19. doi: 10.1007/1345_2020_109
Jäggi, Adrian ; Meyer, Ulrich ; Lasser, Martin et al. / International Combination Service for Time-Variable Gravity Fields (COST-G) : Start of Operational Phase and Future Perspectives. Beyond 100: The Next Century in Geodesy - Proceedings of the IAG General Assembly, 2019. editor / Jeffrey T. Freymueller ; Laura Sánchez. Springer Science and Business Media Deutschland GmbH, 2023. pp. 57-65 (International Association of Geodesy Symposia).
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title = "International Combination Service for Time-Variable Gravity Fields (COST-G): Start of Operational Phase and Future Perspectives",
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AU - Meyer, Ulrich

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By the same author(s)