Atmospheric forcing of the Hatteras coastal ocean during 2017–2018: The PEACH program

Bane, John M.; Seim, Harvey; Haines, Sara; Han, Lu; He, Ruoying; Zambon, Joseph B.

doi:10.1016/j.dynatmoce.2023.101364

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…Processed PEACH ADCP and CTD data (Haines, Seim, Muglia, et al., 2022) are available at: https://doi.org/10.5281/zenodo.6383218. PEACH wind stress data (Haines, Seim, & Bane, 2022) are available at: https://doi.org/10.5281/zenodo.6383242. The combine High Frequency Radar data (Haines, Muglia, Savidge, et al., 2022) are available at: https://doi.org/10.5281/zenodo.7044816.…”

Section: Data Availability Statementmentioning

confidence: 99%

Ocean Circulation Near Cape Hatteras: Observations of Mean and Variability

et al. 2022

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Introduction and BackgroundMany oceanographic processes occur in the vicinity of Cape Hatteras USA, and together contribute to the complex flow regime there. Cape Hatteras and its sub-surface offshore extension, Diamond Shoals, mark the separation of the continental shelf along the U.S east coast into two distinct regions: South Atlantic Bight (SAB) and Mid Atlantic Bight (MAB). Like the coastline, the shelfbreak (∼100-m isobath) changes its orientation from south to north, turning from about SW-NE to almost S-N at the "The Point," offshore of Cape Hatteras near 35.5°N (Figure 1a). The Point is where the Gulf Stream typically separates from the continental margin, and it is also usually the southernmost detachment location of the Shelfbreak Jet (Csanady & Hamilton, 1988;Gawarkiewicz et al., 2008). On the adjacent continental shelf, both the MAB and SAB shelf waters generally flow toward Cape Hatteras. To better understand the seawater exchange between the continental shelf and the adjacent open ocean in this region, an integrated observational and modeling program, Processes driving Exchange At Cape Hatteras

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Section: Data Availability Statementmentioning

confidence: 99%

Ocean Circulation Near Cape Hatteras: Observations of Mean and Variability

et al. 2022

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“…Ocean gliders observed that GS transport was reduced by 40% for approximately two weeks following the passages of Hurricanes José and Maria 17 . Atmospheric conditions near Cape Hatteras were classified into warm season (May to mid-September) and cool season (mid-September through April) 18 . During the cool season, energetic extratropical cyclones induce strong wind stress that accounts for over 40% of the total current variability over the continental shelf near the Cape Hatteras region 18 .…”

Section: Introductionmentioning

confidence: 99%

Modes of North Atlantic Western boundary current variability at 36° N

Mao,

He,

Andres

2023

Sci Rep

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The surface-intensified, poleward-flowing Gulf Stream (GS) encounters the equatorward-flowing Deep Western Boundary Current (DWBC) at 36° N off Cape Hatteras. In this study, daily output from a data-assimilative, high-resolution (800 m), regional ocean reanalysis was examined to quantify variability in the velocity structure of the GS and DWBC during 2017–2018. The validity of this reanalysis was confirmed with independent observations of ocean velocity and density that demonstrate a high level of realism in the model’s representation of the regional circulation. The model’s daily velocity time series across a transect off Cape Hatteras was examined using rotated Empirical Orthogonal Function analysis, and analysis suggests three leading modes that characterize the variability of the western boundary currents throughout the water column. The first mode, related to meandering of the GS current, accounts for 55.3% of the variance, followed by a “wind-forced mode”, which accounts for 12.5% of the variance. The third mode, influenced by the DWBC and upper-ocean eddies, accounts for 7.1% of the variance.

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Quantifying Surface Shelf Water Export in the Southern Middle Atlantic Bight Using a Lagrangian Particle Tracking Approach

Mao,

Shropshire,

2024

JGR Oceans

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Shelf water is influenced by atmospheric forcing, river outflows, and the open ocean. Studying its variability is crucial for understanding anthropogenic impacts on coastal oceans and their transport to the open ocean. In the Middle Atlantic Bight (MAB), the interaction of the Gulf Stream with shelf/slope circulation leads to some of the complex exchanges between the shelf and open ocean along the U.S. East Coast. This study employs a Lagrangian particle tracking approach, grounded in a high‐resolution, data‐assimilative ocean reanalysis, to examine the export pathways of surface shelf water in the MAB. We analyzed over 700 daily images of simulated particle distributions using image clustering techniques. This revealed three distinct export patterns: abrupt entrainment to the Gulf Stream, gradual entrainment, and southern transport. Each pattern was observed roughly equally during the study period from January 2017 to December 2018. The observed export patterns are closely linked to the coastal circulation dynamics near Cape Hatteras. Understanding the timing and duration of these patterns is vital for assessing water quality and predicting the settlement of species that spawn in the region. Our study further underscores the influence of tropical cyclones, including Hurricanes Jose, Maria, and Chris, on these export patterns. These extreme weather events lead to significant shifts in coastal circulation near Cape Hatteras.

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Atmospheric forcing of the Hatteras coastal ocean during 2017–2018: The PEACH program

Cited by 3 publications

References 38 publications

Ocean Circulation Near Cape Hatteras: Observations of Mean and Variability

Ocean Circulation Near Cape Hatteras: Observations of Mean and Variability

Modes of North Atlantic Western boundary current variability at 36° N

Quantifying Surface Shelf Water Export in the Southern Middle Atlantic Bight Using a Lagrangian Particle Tracking Approach

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