Evaluation of the Global Altimetric Marine Gravity Field DTU15: Using Marine Gravity and GOCE Satellite Gravity

O. Andersen*, P. Knudsen, S. Kenyon, S. Holmes, John K. Factor

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Global marine gravity field modelling using satellite altimetry has been undergoing constant improvement since the launch of Cryosat-2 mission in 2010. With its 369 day-repeat Cryosat-2 provides one repeat of geodetic mission data with 8 km global resolution each year. Together with the completion of the Jason-1 end-of-life geodetic mission in 2011 and 2012, these new satellites has provided more than 4 times three times as much geodetic missions altimetric sea surface height observations than ever before. The higher precision of these new sea surface height observations compared with observations from ERS-1 and Geosat results in a dramatic improvement of the shorter wavelength of the gravity field (12–20 km) resulting in much favorable comparison with marine gravity. The pan-Arctic altimetric gravity field now surpassing 2008 Arctic Gravity Field project derived from multiple gravity field sources. A direct comparison between Arctic marine gravity fields and independent gravity field from the Gravity Field and Steady-State Ocean Circulation Explorer to degree and order 280 confirms this.
Original languageEnglish
Title of host publicationInternational Symposium on Advancing Geodesy in a Changing World - Proceedings of the IAG Scientific Assembly, 2017
EditorsLaura Sánchez, Jeffrey T. Freymueller
PublisherSpringer
Publication date2019
Pages77-81
ISBN (Print)9783030129149
DOIs
Publication statusPublished - 2019
EventInternational Symposium on Advancing Geodesy in a Changing World - Kobe, Japan
Duration: 30 Jul 20174 Aug 2017

Conference

ConferenceInternational Symposium on Advancing Geodesy in a Changing World
CountryJapan
CityKobe
Period30/07/201704/08/2017
SeriesInternational Association of Geodesy Symposia
Volume149
ISSN0939-9585

Keywords

  • GOCE
  • Marine gravity
  • Satellite altimetry

Cite this

Andersen, O., Knudsen, P., Kenyon, S., Holmes, S., & Factor, J. K. (2019). Evaluation of the Global Altimetric Marine Gravity Field DTU15: Using Marine Gravity and GOCE Satellite Gravity. In L. Sánchez, & J. T. Freymueller (Eds.), International Symposium on Advancing Geodesy in a Changing World - Proceedings of the IAG Scientific Assembly, 2017 (pp. 77-81). Springer. International Association of Geodesy Symposia, Vol.. 149 https://doi.org/10.1007/1345_2018_52