Monitoring Jason-3 sea surface height measurement stability for global and regional sea level estimates

Brian Beckley (SGT Inc./NASA GSFC, United States)

CoAuthors

Xu Yang (SGT Inc., USA); Gary Mitchum (University of South Florida, USA); Richard Ray (NASA GSFC, USA); Frank Lemoine (NASA GSFC, USA); Nikita Zelensky (SGT Inc., USA); Bryant Loomis (NASA GSFC, USA)

Event: 2018 Ocean Surface Topography Science Team Meeting

Session: Regional and Global CAL/VAL for Assembling a Climate Data Record

Presentation type: Type Poster

The determination of the rate of change of mean sea level has undeniable societal significance. The measurement of geocentric sea level change from satellite altimetry requires vigilant monitoring of the altimeter measurement system stability since the signal being measured is at the level of a few mm/yr. In this presentation we report inter-comparisons of current Jason-3 and coincident Sentinel-3A drift estimates based on sea surface height (SSH) differences with respect to a global tide gauge network. Jason-3/Sentinel-3A SSH and range correction crossover residual time series are evaluated to provide additional insight to Jason-3 stability interrogations. We provide an assessment of recent improvements to the accuracy of the 25-year sea surface height time series, describe continuing calibration/validation activities, and evaluate the subsequent impact on current global and regional mean sea level estimates.
 

Poster show times:

Room Start Date End Date
Foyer, Salao Nobre & tent Thu, Sep 27 2018,18:00 Thu, Sep 27 2018,20:00
Foyer, Salao Nobre & tent Fri, Sep 28 2018,14:00 Fri, Sep 28 2018,15:00
Brian Beckley
SGT Inc./NASA GSFC
United States
brian.d.beckley@nasa.gov