Excess heat in the abyssal ocean explains warming oceans — The Ethical Skeptic

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  1. Deep Argo floats operate on a nominal 10-day cycle, though some configurations use 15-day cycles to accommodate deeper profiling depths. 
     During each cycle, the floats cycle between the ocean surface and the seafloor, typically reaching depths of 4000 meters or 6000 meters depending on the specific model (such as Deep SOLO, Deep Arvor, or Deep NINJA). 
    The cycle consists of the following key phases:
    Descent: The float sinks to its target profile depth (4000 m or 6000 m), a process that can take up to 13 hours for deep models. 
    Parking/Drifting: Upon reaching the bottom or target depth, the float pauses or drifts for a set duration before beginning its ascent. 
    Ascent and Profiling: The float rises to the surface, a process taking approximately 17 hours from 5000 meters, continuously measuring temperature, salinity, and pressure
    Transmission: Once at the surface, the float transmits data via satellite (often Iridium) and receives new mission instructions before sinking back to its drift depth to repeat the process. 
    While Core Argo floats sample the upper 2000 meters, Deep Argo floats are designed to sample the full ocean volume, providing critical data for understanding deep-ocean heat content and circulation.  ↩︎

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