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Multi-Mission Cross-Calibration of Satellite Altimeters

Systematic Differences Between Sentinel-3A and Jason-3
  • Denise DettmeringEmail author
  • Christian Schwatke
Conference paper
  • 51 Downloads
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 150)

Abstract

The inter-mission cross-calibration is a basic prerequisite for long-term sea level change studies on all spatial scales. Especially, for climate studies the consistent combination of successive missions is essential. This study uses a global multi-mission crossover analysis in order to investigate the performance of the Copernicus Sentinel-3A altimetry mission and its consistency to consecutive missions such as Jason-3. The first 1.5 years of data show an inter-mission bias of 3.6 cm with respect to Jason-3 with a linear trend of 4.0 mm/year. When using Pseudo Low Resolution Mode (PLRM) instead of Delay-Doppler data the bias increases whereas the trend decreases. Given the short time period under investigation these numbers should not be overrated, however, a careful future monitoring is necessary.

Keywords

Cross-calibration GCE Range bias drift Sentinel-3A 

Notes

Acknowledgements

We kindly thank the institutions in charge of mission operation and maintenance (ESA, EUMETSAT, NASA, CNES) as well as the data providers (EUMETSAT, AVISO). Special thank goes to EUMETSAT for supporting the participation at the International Review Workshop On Satellite Altimetry Cal/Val Activities and Applications, Chania, Greece, April 2018.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Deutsches Geodätisches Forschungsinstitut der Technischen Universität München (DGFI-TUM)MünchenGermany

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