Temperature-Salinity Variability in the Upper Ocean

该项目将观测上层海洋的温度(T)和盐度(S)，并评估关于由地表通量和平流引入的等环流如何降低T-S变化以建立T-S关系的相互竞争的假设。这一研究领域对于理解近地表过程及其与大尺度环流的关系非常重要，但实际上尚未得到探索。牵引车辆的最新发展使这种探索成为可能。随着水平尺度的变化，T-S关系和密度比的变化将成为区分T-S调控理论竞争的关键因素。现场数据将通过配备T、S和压力传感器的深度可控拖曳车辆（seasar）获得。三种不同的采样策略（定深、等周期和锯齿）将在一系列长（1000公里）的拖曳中使用。＊＊＊

9529752 Rudnick This project will observe temperature (T) and salinity (S) in the upper ocean and evaluate competing hypotheses about how T-S variability along isopyclals, introduced by surface fluxes and advection, is reduced to establish a T-S relationship. This area of investigation is of great importance to understanding near-surface processes and their relationship to the large-scale circulation, but remains virtually unexplored. Recent developments in towed vehicles make this exploration possible now. Changes in the T-S relationship and the density ratio with changing horizontal scale will be key elements in distinguishing competing theories of T-S regulation. Field data will be obtained using a depth-controllable, towed vehicle (SeaSoar) equipped with T, S, and pressure sensors. Three different sampling strategies (constant depth, isopycnal, and sawtooth) will be employed during a series of long (1000 km) tows. ***