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Sound speed inversion of modal group delays of broadband 35-Hz transmissions during the Coordinated Arctic Acoustic Thermometry Experiment

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Analysis demonstrates changes in sound speed in the Arctic Ocean's interior, highlighting climate impact via CAATEX.

Sound speed inversion results indicate significant changes in the Arctic Ocean's interior due to climate change.
Using data from the Ice-Tethered Profiler, the study estimates a range-independent sound speed profile over time.
The methodology involves linear inverse techniques applied to modal group delays from broadband transmissions.
Estimation was conducted over the year 2019–2020, highlighting the impact of warmer water influx on sound transmission.

Akins et al. (2025) studied this question.

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