Abstract's details
The DUACS-DT2018 reprocessed sea level time series soon available in CMEMS
CoAuthors
Event: 2017 Ocean Surface Topography Science Team Meeting
Session: Science III: Mesoscale and sub-mesoscale oceanography
Presentation type: Type Poster
Contribution: PDF file
Abstract:
The DUACS system produces, as part of the Copernicus Marine Environment and Monitoring Service (CMEMS), high quality multimission altimetry Sea Level products for oceanographic applications, climate forecasting centers, geophysic and biology communities... These products consist in directly usable and easy to manipulate Level 3 (along-track cross-calibrated Sea Level Anomaly SLA) and Level 4 (multiple sensors merged as maps or time series) products and are available in global and regional version (Mediterranean Sea, Arctic, European Shelves …).
A full reprocessing is carried out almost every 3 years based on the state-of-the-art Level 2 to Level 4 algorithms. Early next year, a new version will be available through the CMEMS catalogue. It will cover the entire 1993 – 2016 period and would benefit from major improvements associated with new altimeter and mapping standards.
Here, we report the first results of this upcoming multi-mission reprocessing. We present the DUACS-DT2018 reprocessing and evaluate the changes associated with the new standards. Several comparisons with independent dataset (along-track, drifters, tide gauges) show that the new altimeter standards participate in up to 5% improvements of the SLA mapping mainly near coastal areas and at high latitude compared with the DUACS-DT2014 dataset. The new mapping standards contribute to ~2% improvement mainly in the inter-tropical band and in high variability regions. Additionally, we found that the mesoscale scale structures are particularly improved in the regional Mediterranean Sea product.
A full reprocessing is carried out almost every 3 years based on the state-of-the-art Level 2 to Level 4 algorithms. Early next year, a new version will be available through the CMEMS catalogue. It will cover the entire 1993 – 2016 period and would benefit from major improvements associated with new altimeter and mapping standards.
Here, we report the first results of this upcoming multi-mission reprocessing. We present the DUACS-DT2018 reprocessing and evaluate the changes associated with the new standards. Several comparisons with independent dataset (along-track, drifters, tide gauges) show that the new altimeter standards participate in up to 5% improvements of the SLA mapping mainly near coastal areas and at high latitude compared with the DUACS-DT2014 dataset. The new mapping standards contribute to ~2% improvement mainly in the inter-tropical band and in high variability regions. Additionally, we found that the mesoscale scale structures are particularly improved in the regional Mediterranean Sea product.