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

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in Buch/Sammelband/GutachtenBeigetragenBegutachtung

Beitragende

  • Adrian Jäggi - , Universität Bern (Autor:in)
  • Ulrich Meyer - , Universität Bern (Autor:in)
  • Martin Lasser - , Universität Bern (Autor:in)
  • Barbara Jenny - , Universität Bern (Autor:in)
  • Teodolina Lopez - , Universität Bern (Autor:in)
  • Frank Flechtner - , Helmholtz-Zentrum Potsdam – Deutsches GeoForschungsZentrum (Autor:in)
  • Christoph Dahle - , Helmholtz-Zentrum Potsdam – Deutsches GeoForschungsZentrum (Autor:in)
  • Christoph Förste - , Helmholtz-Zentrum Potsdam – Deutsches GeoForschungsZentrum (Autor:in)
  • Torsten Mayer-Gürr - , Technische Universität Graz (Autor:in)
  • Andreas Kvas - , Technische Universität Graz (Autor:in)
  • Jean-Michel Lemoine - , Centre national d'études spatiales (Autor:in)
  • Stéphane Bourgogne - , Stellar Space Studies SAS (Autor:in)
  • Matthias Weigelt - , Leibniz Universität Hannover (LUH) (Autor:in)
  • Andreas Groh - , Professur für Geodätische Erdsystemforschung (Autor:in)

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.

Details

OriginalspracheEnglisch
TitelInternational Association of Geodesy Symposia
Redakteure/-innenJeffrey T. Freymueller
ErscheinungsortBerlin, Heidelberg
Herausgeber (Verlag)Springer Verlag
Seitenumfang9
ISBN (elektronisch)2197-9359
ISBN (Print)0939-9585
PublikationsstatusVeröffentlicht - 19 Mai 2020
Peer-Review-StatusJa

Externe IDs

Scopus 85142620346

Schlagworte