This presentation was given in Kiel at the occasion of the 2nd General Assembly of the H2020 AtlantOS project. It presents the enhancements on the drifting buoy network, explored in the framework of the project

Blouch, Pierre

Poli, Paul

English

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GIE/EIG EUMETNET, Registered Number 0818.801.249 - RPM Bruxelles  AtlantOS 2nd General Assembly & WP7 Workshop June 2016 doi:10.5281/zenodo.890291 This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 633211 WP3 Enhanced network of drifters Pierre BLOUCH, Paul POLI (EUMETNET and Météo-France) GIE/EIG EUMETNET, Registered Number 0818.801.249 - RPM Bruxelles  AtlantOS 2nd General Assembly & WP7 Workshop June 2016 doi:10.5281/zenodo.890291 This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 633211 Drifters network enhancement 3 axes of enhancement 1. Variables  Sea Surface Salinity NKE develops an affordable sensor, for potentially equipping all drifters eventually 2. Vertical sampling  Sub-surface Temperature profiles in the top ~80 meters  Project included such deployments originally,  but the key partner had to be excluded  for external reasons (Crimea);  What remains is  an analysis of data collected by past drifters  equipped with bathythermic chains 3. Horizontal coverage   Tropical Atlantic 13 drifters measuring atmospheric surface  pressure (SVP-B) to be deployed every year  (19 deployed so far)  AtlantOS Others GIE/EIG EUMETNET, Registered Number 0818.801.249 - RPM Bruxelles  AtlantOS 2nd General Assembly & WP7 Workshop June 2016 doi:10.5281/zenodo.890291 This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 633211 Drifters data management • Data fluxes (in relationship with WP7) – Data well-served in NRT, with presence in EMODnet Physics – Capacity gap for Delayed-Mode (no SeaDataNet entry) • Calibration – 3 drifters (non-AtlantOS) recovered in the past year will be recalibrated for SST • Standardisation – Aiming to align the data practices with other networks like Argo, with organization as DAC and GDAC – NRT data format already follows WMO BUFR standard – Metadata already exchanged with JCOMMOPS (coordinating body) and flow to WMO OSCAR – New standard to be defined in terms of NetCDF for GDAC • Picking up the legacy data formats and the metadata GIE/EIG EUMETNET, Registered Number 0818.801.249 - RPM Bruxelles  AtlantOS 2nd General Assembly & WP7 Workshop June 2016 doi:10.5281/zenodo.890291 This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 633211 AtlantOS Drifters long-term sustainability • For drifters measuring SSS – 1st prototypes are required before making any recommendation – Once this demonstration has been made, there may be opportunities for large-scale operations of satellite SSS cal/val in the coming years – Once SSS drifter data become routinely assimilated into models, then SSS drifters may become part of the operational observing system surface infrastructure, and could benefit from corresponding funding sources • For drifters measuring sub-surface Temperature – Analysis of data collected by past experiments will be crucial to advise on future purchases of such drifters • For improved geographical coverage of SVP-B – EUMETNET funds 2/3 of SVP-B in the North Atlantic • Justified by proven impact onto Numerical Weather Prediction – Assuming continued trends (budget stable and drifter lifetimes increased) this framework could continue the AtlantOS legacy of SVP-B in the tropical Atlantic • Impact review needed (see next slide)  GIE/EIG EUMETNET, Registered Number 0818.801.249 - RPM Bruxelles  AtlantOS 2nd General Assembly & WP7 Workshop June 2016 doi:10.5281/zenodo.890291 This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 633211 AtlantOS Drifters long-term sustainability • To continue the improved coverage of SVP-B in the tropical Atlantic – Impact review needed: Preliminary results here from ERA-Interim For most observing systems, each individual datum has a low impact LOW HIGH Among these, the AtlantOS drifters are above the norm (because they observe regions with few other Sfc.P obs around) Surface pressure observations are the most impacting, per datum 

Enhanced network of drifters

<p>This presentation was given in Kiel at the occasion of the 2nd General Assembly of the H2020 AtlantOS project. It presents the enhancements on the drifting buoy network, explored in the framework of the project.</p

Blouch, Pierre (5370481)

Poli, Paul (5370484)

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https://zenodo.org/record/890291/files/Enhanced_network_of_drifters_26june2016.pdf

Enhanced network of drifters

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