The name Argo is chosen to emphasize the strong complementary relationship of the global float array with the Jason altimeter mission. Conceptually, Argo builds on the existing upper-ocean thermal networks, extending their spatial and temporal coverage, their depth range and accuracy, and enhancing measurements with the addition of salinity and velocity measurements. Global Array of Temperature & Salinity Profiling FloatsĪrgo, the broad-scale global array of temperature/salinity profiling floats, is a major component of the ocean observing system. Perez (AOML), Shenfu Dong (AOML), Matthieu Le Hénaff (CIMAS, AOML), Denis Volkov (CIMAS, AOML)Ĭollaborators: Matthew Harrison (NOAA/GFDL), Christopher S. These observations can be used to quantify deep ocean warming in a manner never before accomplished. The deep temperature records will also serve as a reference data set for interpreting future deep temperature variations as new deep observational platforms are brought online, such as a global deep Argo array. The results of the study led to a new NOAA-funded project entitled “Innovative analysis of deep and abyssal temperatures from bottom-moored instruments.” This project will analyze deep ocean temperature observations being collected by two existing long-term (10-15+ year) arrays of PIES moorings that have been maintained in the North and South Atlantic by NOAA, as well as examine recent and historical observations collected by international partners (e.g., Campos et al., 2021).These observations will help scientists to understand deep temperature variations and forcing mechanisms, predict future deep ocean temperature changes, and serve as a benchmark to validate ocean models. A recent study ( Meinen et al., 2020) led by scientists at NOAA/AOML demonstrated that an innovative use of temperature sensors located within the sphere of a pressure-equipped inverted echo sounder (PIES) mooring can provide hourly near-bottom temperature measurements over extended time periods to detect long-term abyssal temperature changes. The ocean plays a major role in the distribution of heat in the climate system, however direct observations of temperature variability in the deep ocean are very sparse.
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