Combination Service for Time-variable Gravity Fields (COST-G): operational GRACE-FO combination and validation of Chinese GRACE time-series

Ulrich Meyer, Martin Lasser, Adrian Jäggi, Christoph Dahle, Frank Flechtner, Andreas Kvas, Saniya Behzadpour, Torsten Mayer-Gürr, Jean-Michel Lemoine, Igor Koch, Jakob Flury, Stéphane Bourgogne, Andreas Groh, Annette Eicker, Christoph Förste, Zhicai Luo, Jiangjun Ran, Yunzhong Shen, Qile Zhao, Wei Feng

Publikation: KonferenzbeitragPaper

Abstract

The Combination Service for Time-variable Gravity Fields (COST-G) of the International Association of Geodesy (IAG) provides combined monthly gravity fields of its associated and partner Analysis Centers (ACs). In November 2020, the combination of monthly GRACE-FO gravity fields started its operational mode, providing consolidated L2 (spherical harmonics) and L3 (gridded and post- processed) products with a latency of currently 3 months. We present an overview and quality assessment of the available products.

COST-G aims at the extension of its service to include further GRACE and GRACE-FO analysis centers. In January 2020 a collaboration with representatives of five Chinese ACs was initiated, who provided GRACE time-series according to the COST-G requirements. We present the results of a test combination with the Chinese AC models, including comparison and quality assessment of all contributing time-series and validation of the combined gravity fields.
Originalspracheenglisch
DOIs
PublikationsstatusVeröffentlicht - 30 Apr 2021

ASJC Scopus subject areas

  • !!Earth and Planetary Sciences(all)

Fields of Expertise

  • Sustainable Systems

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