Sea-ice detection for autonomous underwater vehicles and oceanographic lagrangian platforms by continuous-wave laser polarimetry

Lagunas, José; Marec, Claudie; Leymarie, Édouard; Penkerc’h, Christophe; Rehm, Eric; Desaulniers, Pierre; Brousseau, Denis; Larochelle, Patrick; Roy, Gilles; Fournier, Georges; Thibault, Simon; Babin, Marcel

doi:10.1117/12.2309571

Cited by 3 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most promising new method tested during the NAOS project is probably the optical detector developed by Lagunas et al (2018), based on depolarization of a laser's reflection on ice. The method was tested, during a prototype phase, on a profiling float deployed in 2016 (WMO6902668).…”

Section: Systematic Winter Stop and Other Ice-detection Methodsmentioning

confidence: 99%

Preparing the New Phase of Argo: Technological Developments on Profiling Floats in the NAOS Project

André¹,

Traon²,

Dutreuil³

et al. 2020

Front. Mar. Sci.

Self Cite

View full text Add to dashboard Cite

Section: Systematic Winter Stop and Other Ice-detection Methodsmentioning

confidence: 99%

Preparing the New Phase of Argo: Technological Developments on Profiling Floats in the NAOS Project

André¹,

Traon²,

Dutreuil³

et al. 2020

Front. Mar. Sci.

Self Cite

View full text Add to dashboard Cite

“…Furthermore, the resolution provided by an altimeter is not sufficient to detect a thin-ice layer. For this, Takuvik has developed an ice-detection system based on laser polarimetry (Lagunas et al, 2018). Since sea-ice is a strong light depolarizer, this characteristic was used as an indicator of the presence or absence of ice.…”

Section: Deployment Of Argo Floats In Canadian Marginal Ice Zone By Cmentioning

confidence: 99%

Polar Ocean Observations: A Critical Gap in the Observing System and Its Effect on Environmental Predictions From Hours to a Season

et al. 2019

Self Cite

View full text Add to dashboard Cite

There is a growing need for operational oceanographic predictions in both the Arctic and Antarctic polar regions. In the former, this is driven by a declining ice cover accompanied by an increase in maritime traffic and exploitation of marine resources. Oceanographic predictions in the Antarctic are also important, both to support Antarctic operations and also to help elucidate processes governing sea ice and ice shelf stability. However, a significant gap exists in the ocean observing system in polar regions, compared to most areas of the global ocean, hindering the reliability of ocean and sea ice forecasts. This gap can also be seen from the spread in ocean and sea ice reanalyses for polar regions which provide an estimate of their uncertainty. The reduced reliability of polar predictions may affect the quality of various applications including search and rescue, coupling with numerical weather and seasonal predictions, historical reconstructions (reanalysis), aquaculture and environmental management including environmental emergency response. Here, we outline the status of existing near-real time ocean observational efforts in polar regions, discuss gaps, and explore perspectives for the future. Specific recommendations include a renewed call for open access to data, especially real-time data, as a critical capability for improved sea ice and weather forecasting and other environmental prediction needs. Dedicated efforts are also needed to make use of additional observations made as part of the Year of Polar Prediction (YOPP; 2017–2019) to inform optimal observing system design. To provide a polar extension to the Argo network, it is recommended that a network of ice-borne sea ice and upper-ocean observing buoys be deployed and supported operationally in ice-covered areas together with autonomous profiling floats and gliders (potentially with ice detection capability) in seasonally ice covered seas. Finally, additional efforts to better measure and parameterize surface exchanges in polar regions are much needed to improve coupled environmental prediction.

show abstract

Preparing the New Phase of Argo: Scientific Achievements of the NAOS Project

et al. 2020

Self Cite

View full text Add to dashboard Cite

Argo, the international array of profiling floats, is a major component of the global ocean and climate observing system. In 2010, the NAOS (Novel Argo Observing System) project was selected as part of the French "Investissements d'Avenir" Equipex program. The objectives of NAOS were to consolidate the French contribution to Argo's core mission (global temperature and salinity measurements down to 2000 m), and also to develop the future generation of French Argo profiling floats and prepare the next phase of the Argo program with an extension to the deep ocean (Deep Argo), biogeochemistry (BGC-Argo) and polar seas. This paper summarizes how NAOS has met its objectives. The project significantly boosted France's contribution to Argo's core mission by deploying more than 100 NAOS standard Argo profiling floats. In addition, NAOS deployed new-generation floats as part of three scientific experiments: biogeochemical floats in the Mediterranean Sea, biogeochemical floats in the Arctic Ocean, and deep floats with oxygen sensors in the North Atlantic. The experiment in the Mediterranean Sea, launched in 2012, implemented and maintained a network of BGC-Argo floats at basin scale for the first time. The 32 BGC-Argo floats deployed and about 4000 BGC profiles collected have vastly improved characterization of the biogeochemical and ecosystem dynamics of the Mediterranean. Meanwhile, experiments in the Arctic and in the North Atlantic, starting in 2015 and deploying 20 Arctic BGC floats and 23 deep floats, have provided unique observations on biogeochemical cycles in the Arctic and deep-water masses, as well as ocean circulation variability in the North Atlantic. NAOS has therefore paved the way to the new operational phase of the Argo program in France that includes BGC and Deep Argo extensions. The objectives and characteristics of this new phase of Argo-France are discussed in the conclusion.

show abstract

Sea-ice detection for autonomous underwater vehicles and oceanographic lagrangian platforms by continuous-wave laser polarimetry

Cited by 3 publications

References 24 publications

Preparing the New Phase of Argo: Technological Developments on Profiling Floats in the NAOS Project

Preparing the New Phase of Argo: Technological Developments on Profiling Floats in the NAOS Project

Polar Ocean Observations: A Critical Gap in the Observing System and Its Effect on Environmental Predictions From Hours to a Season

Preparing the New Phase of Argo: Scientific Achievements of the NAOS Project

Contact Info

Product

Resources

About