Wind-driven response of the Hudson River Plume and its effect on dissolved oxygen concentrations

Abstract

The Lagrangian Transport and Transformation Experiment (LaTTE) study of the Hudson River Plume has now completed 2 of its 3 field seasons. The interdisciplinary study is being conducted in a sustained coastal research observatory that provides a spatial and temporal context for adaptive shipboard sampling. Observations from the second LaTTE field season are used here to describe the processes responsible for a previously unexplained recurrent hypoxia region along the New Jersey coast.

Spring and Summer Larval Fish Assemblages in the Surf Zone and Nearshore off Northern New Jersey, USA

“…Higher salinities, lower dissolved oxygen, and higher turbidity frequently accompanied the colder water within each sampling period (Table 1). Wind data were not recorded during sampling; however, the intrusion of deeper oceanic water with the aforementioned characteristics is consistent with westerly winds that push surface waters (Chant et al 2004) and the Hudson River plume offshore under summertime conditions in this area (Bowman 1978;Cowen 1996;Glenn et al 2007;Zhang et al 2009). …”

The horizontal heat advection in the Middle Atlantic Bight and the cross‐spectral interactions within the heat advection

“…As revealed in Figure , the elevation advection is stronger than the Ekman advection within the mixed layer depth over the shelf, especially for the southern part of the shelf. Our results here do not conflict with previous studies which recognized the wind forcing as one of the important factors to the offshore transport within the New Jersey shelf [ Kohut et al ., ; Glenn et al ., ; Jiang , ; Dzwonkowski et al ., ]. In the conventional Ekman theory, the magnitude of the wind‐induced flow decreases as depth increases, implying the Ekman heat advection at the surface is stronger than the depth‐averaged one within the mixed layer.…”