Argo floats deployed at the North Pole, will we see them again ? ...

The Arctic ocean is changing at an alarming and unprecedented rate, in response to the on-going climate change. Yet, the hydrological properties and their changes remain poorly observed in this basin. One reason is that the winter harsh conditions and permanent sea ice cover make cruise and autonomo...

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Bibliographic Details
Main Author: BALEM, Kevin
Format: Text
Language:English
Published: Zenodo 2022
Subjects:
Online Access:https://dx.doi.org/10.5281/zenodo.13373883
https://zenodo.org/doi/10.5281/zenodo.13373883
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Summary:The Arctic ocean is changing at an alarming and unprecedented rate, in response to the on-going climate change. Yet, the hydrological properties and their changes remain poorly observed in this basin. One reason is that the winter harsh conditions and permanent sea ice cover make cruise and autonomous platform operations difficult. As a result, the Arctic is one of the last basins over the global ocean not covered by the Argo network. Argo floats are designed to transmit their data and positions when reaching the surface at the end of each profile, which is not possible in sea ice covered regions. In September 2021, two Argo floats were deployed under sea ice at the North Pole (90°N) in the western Eurasian Arctic Basin, as part of the french project ARticGO. They are equipped with an Ice-Sensing-Algorithm (ISA), making them able to detect the presence of sea ice, and continue profiling without reaching the surface until they enter an ice-free region. In order to better assess the under ice behavior of the ...