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

Jäggi, Adrian; Meyer, Ulrich; Lasser, Martin; Jenny, Barbara; Lopez, Teodolina; Flechtner, Frank; Dahle, Christoph; Förste, Christoph; Mayer-Gürr, Torsten; Kvas, Andreas; Lemoine, Jean-Michel; Bourgogne, Stéphane; Weigelt, Matthias; Groh, Andreas (2020). International Combination Service for Time-Variable Gravity Fields (COST-G) : Start of Operational Phase and Future Perspectives. In: International Association of Geodesy Symposia. International Association of Geodesy Symposia. Springer 10.1007/1345_2020_109

[img]
Preview
Text
Jäggi2020_Chapter_InternationalCombinationServic.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (651kB) | Preview

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.

Item Type:

Book Section (Book Chapter)

Division/Institute:

08 Faculty of Science > Institute of Astronomy

UniBE Contributor:

Jäggi, Adrian; Meyer, Ulrich; Lasser, Martin and Jenny, Barbara

Subjects:

500 Science > 520 Astronomy

ISSN:

0939-9585

Series:

International Association of Geodesy Symposia

Publisher:

Springer

Language:

English

Submitter:

Pierre Fridez

Date Deposited:

04 Jun 2020 09:11

Last Modified:

04 Jun 2020 09:11

Publisher DOI:

10.1007/1345_2020_109

BORIS DOI:

10.7892/boris.144193

URI:

https://boris.unibe.ch/id/eprint/144193

Actions (login required)

Edit item Edit item
Provide Feedback