A5032975914- Oceanographic and Atmospheric Processes
- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Ocean Waves and Remote Sensing
- Marine and coastal plant biology
- Climate variability and models
- Ocean Acidification Effects and Responses
- Coastal and Marine Dynamics
- Coastal and Marine Management
- Geological formations and processes
- Marine Bivalve and Aquaculture Studies
- Geology and Paleoclimatology Research
- Oil Spill Detection and Mitigation
- Cognitive and developmental aspects of mathematical skills
- Behavioral and Psychological Studies
- Global Energy and Sustainability Research
- Fish biology, ecology, and behavior
- Isotope Analysis in Ecology
- Tropical and Extratropical Cyclones Research
- Autism Spectrum Disorder Research
- Reservoir Engineering and Simulation Methods
- Atmospheric and Environmental Gas Dynamics
- Gas Dynamics and Kinetic Theory
NOAA Atlantic Oceanographic and Meteorological Laboratories
2006-2020
National Oceanic and Atmospheric Administration
1992-2020
University of Miami
1989
Auckland City Hospital
1976
Starting in 2011, coastal areas of the Caribbean Sea and tropical Atlantic Ocean began to experience extraordinary yearly accumulations pelagic Sargassum brown alga. Historical reports place large quantities only North (mostly Gulf Mexico Sargasso Sea). Accumulations have continued. We used a numerical particle-tracking system, wind current reanalysis data, drifting buoy trajectories, satellite imagery determine origin that is now found persistently Atlantic. Our analyses suggest during...
Since 2011, beach inundation of massive amounts pelagic Sargassum algae has occurred around the Caribbean nations and islands. Previous studies have applied satellite ocean color to determine origins this phenomenon. These techniques, combined with complementary approaches, suggest that, rather than blooms originating in Caribbean, they arrive from Equatorial Atlantic. However, oceanographic context for these occurrences remains limited. Here, we present results synthetic particle tracking...
Ocean acidification (OA) is expected to reduce the calcification rates of marine organisms, yet we have little understanding how OA will manifest within dynamic, real-world systems. Natural CO2, alkalinity, and salinity gradients can significantly alter local carbonate chemistry, thereby create a range susceptibility for different ecosystems OA. As such, there need characterize this natural variability seawater especially coastal ecosystems. Since 2009, chemistry data been collected on...
Shipboard acoustic Doppler current profiler (ADCP) measurements and hydrographic observations of temperature, salinity, dissolved oxygen are used to examine the upper water column flow field in North Brazil Current (NBC) retroflection region western tropical Atlantic Ocean. Observations presented from six cruises, one conducted August 1989 other five during Western Tropical Experiment between January 1990 September 1991. The is divided into two layers, an thermocline layer located surface...
A coherent plume from the Mississippi River was detected in MODIS imagery July–October 2004 extending eastern Gulf of Mexico into Florida Straits (FS), and reaching Stream (GS) off Georgia. The sampled ships FS GS. In early August, about 10–20 km wide western 50 ship survey (16–26 August) documented a km, m deep band with anomalies surface salinity (−0.8), temperature (0.5°C), chlorophyll concentration (2×) relative to waters outside plume. Nutrient concentrations were only slightly higher...
Average cross sections of downstream velocity and temperature, obtained using PEGASUS current profiles at three locations along the Gulf Stream, have been partitioned into 2.5°C temperature intervals to examine distribution transport increase versus between two southern (27° 29°N) off Cape Hatters(73°W). Between 27° 29°N total Florida Current over increased only by about 3 × 106 m3 s−1 (3 Sv) but broadens 50%. By Hatteras, has nearly three-fold 93.7 Sv, which two-thirds is contained in...
Using data collected by satellite sensors, rain and river gauges, ship surveys, we studied the development wind‐driven transport of a dark water plume from near Charlotte Harbor, Florida, to Dry Tortugas in Florida Keys mid‐October 2003. MODIS SeaWiFS imagery showed that patch contained an extensive (∼5,500 km 2 ) phytoplankton bloom formed originally central coast Florida. The linked high nutrient coastal runoff caused heavy rainfall June August. Total N P required for bloom, which may...
Shipboard acoustic Doppler current profiler velocity measurements and profiles of temperature, salinity, dissolved oxygen are used to map the flow field above σ θ = 26.8 isopycnal (approximately upper 300 m water column) in North Brazil Current (NBC) retroflection region (0° 14°N, 60° 40°W) during August 1989. The column is divided into a near‐surface, thermocline layer (above 24.5) main subthermocline (σ 24.5 σ0 26.8). In eastward flowing Equatorial Countercurrent (NECC) composed 16×10 6 3...
July In 1982 two detailed sections of density and absolute velocity were taken across the Gulf Stream northeast Cape Hatteras to conduct an accurate test geostrophy in a strong current. The sections, which about 4 days apart, each completed within 48 hours, using one ship make closely spaced (12 km) conductivity‐temperature‐depth measurements 2000 m, second simultaneously take Pegasus profiles ocean bottom. path curvature also surveyed. dynamically inferred made by matching their velocities...
Author Posting. © The Oceanography Society, 2014. This article is posted here by permission of Society for personal use, not redistribution. definitive version was published in 27, no. 2 (2014): 18-23, doi:10.5670/oceanog.2014.56.
Abstract Observations from five different systems provide a robust picture of the structure and variability Antilles Current, an important contributor to oceanic flux budget, at 26.5°N during 2005–2015. The analysis includes three direct measurement technologies (current meters, shipboard acoustic Doppler current profilers, lowered profilers) two geostrophy‐based (conductivity‐temperature‐depth profilers pressure‐equipped inverted echo sounders). are shown produce weaker, less variable,...
Abstract The M esoamerican B arrier R eef S ystem ( MBRS ) is of high ecological and economic importance to the western C aribbean region, contains spawning sites for a number reef fish species. Despite this, little known distribution transport pelagic larvae in area, basic situ information on larval assemblages lacking. Here we describe results two biological oceanography research cruises conducted winter‐spring 2006 2007, focusing assemblages. We use multivariate assemblage analyses...
Abstract During A pril to J une 2009, a large bolus of mazon R iver water impacted the northeastern C aribbean S ea. Shipboard observations collected near aba B ank, U . and ritish V irgin I slands, negada P assage showed low surface salinity (35.76 ± 0.05 Practical Salinity Unit (PSU)), elevated temperature (26.77 0.14°C), high chlorophyll‐ (1.26 0.21 mg m −3 ) dissolved oxygen (4.90 0.06 mL L −1 in 20‐ 30‐m thick layer riverine plume. The was ~1°C warmer, 1 PSU fresher, 0.3 higher 1.2 than...
Cannizzaro, J.P.; Hu, C.; Carder, K.L.; Kelble, C.R.; Melo, N.; Johns, E.M.; Vargo, G.A., and Heil, C.A., 2013. On the accuracy of SeaWiFS ocean color data products on West Florida Shelf. Despite importance Shelf (WFS) regional ecology local economy, systematic shelf-wide assessment biology has not been conducted, primarily because budgetary limitations for routine field campaigns unknown satellite-based products. Here, using shipboard spectral normalized water-leaving radiance (nLw[λ])...
A “black water” event, as observed from satellites, occurred off southwest Florida in 2012. Satellite observations suggested that the event started early January and ended mid-April The black water patch formed central west advected southward towards Bay Keys with shelf circulation, which was confirmed by satellite-tracked surface drifter trajectories. Compared a previous 2002, 2012 weaker terms of spatial temporal coverage. An situ survey indicated contained toxic K. brevis had relatively...
Shipboard acoustic Doppler current profiler observations of the velocity in upper 200 m water column collected during 1984–1996 using National Oceanic and Atmospheric Administration R/V Malcolm Baldrige are used to examine structure transport passages between Atlantic Ocean Intra‐Americas Sea (IAS). Data were 23 cruises along following sections: across Straits Florida, Northwest Providence Channel (NWPC), northern into Caribbean (Windward, Mona, Anegada), eastern 63°30′ W, thereby forming a...
Total meridional heat flux through a zonal oceanic section at 26.5°N in the Atlantic Ocean is computed from hydrographic, direct current and surface wind observations. The temperature fields are decomposed into depth-averaged depth-dependent (including Ekman geostrophic) components to perform calculation. mean annual boat estimated be 1.21 ± 0.34 PW. Mean monthly values of net also data. cycle determined these ranges minimum 0.69 PW February maximum 1.86 July. Thus, contrast an earlier...