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An estimate of diapycnal nutrient fluxes to the euphotic zone in the Florida Straits
  • Published Date:
    2017
  • Source:
    Scientific Reports, 7(8).
Filetype[PDF-2.55 MB]


Details:
  • Personal Author:
  • Description:
    A recent hydrographic survey of the Florida Current at 27 degrees N revealed an enhanced upward flux of nutrients along the Florida coast. Geostrophic flow of the Gulf Stream through the narrow Florida Straits causes an uplift of the nutricline toward its western edge, shoaling the mixed layers into the base of the euphotic zone. At a nearshore station, nitrate, phosphate, and silicate concentrations reached 19, 1.4, and 10 mu M, respectively, at a water depth of 27 m. Furthermore, nutrient vertical gradients below the mixed layer increased with decreasing seafloor depth toward the Florida coast. The estimated vertical eddy diffusive nutrient fluxes across diapycnal surfaces reached 0.40-83.7, 0.03-6.24, and 0.24-45.5 mmol m(-2) d(-1) for nitrate, phosphate, and silicate, respectively, along the shore. Estimated fluxes span a wide range due to the range of diffusivity measured. The lower end of estimated fluxes are comparable to open ocean values, but higher end of estimates are two orders of magnitude greater than those observed in open ocean. The diapycnal nutrient fluxes declined rapidly offshore as a result of decreasing vertical gradients of nutrient concentration.
  • DOI:
    http://dx.doi.org/10.1038/s41598-017-15853-0
  • Document Type:
    Journal Article
  • Collection(s):
    NOAA Cooperative Institutes
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
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      Personal Author:
      Lopez, H.; Goni, G.; Dong, S. F.;
      Published Date:
      2017
      Source:
      Geophysical Research Letters, 44(7), 3309-3318.
      Description:
      This study reconstructs a century-long South Atlantic Meridional Overturning Circulation (SAMOC) index. The reconstruction is possible due to its covariability with sea surface temperature (SST). A singular value decomposition (SVD) method is applied...
      File Type:
      Filetype[PDF - 2.59 MB]
    2. Spiral gravity waves radiating from tropical cyclones
      Personal Author:
      Nolan, D. S.; Zhang, J. A.;
      Published Date:
      2017
      Source:
      Geophysical Research Letters, 44(8), 3924-3931.
      Description:
      Internal gravity waves are continuously generated by deep moist convection around the globe. Satellite images suggest that tropical cyclones produce short-wavelength, high-frequency waves that radiate outward, with the wave fronts wrapped into tight ...
      File Type:
      Filetype[PDF - 1.41 MB]
    3. Resilience in carbonate production despite three coral bleaching events in 5 years on an inshore patch reef in the Florida Keys
      Personal Author:
      Manzello, D. P.; Enochs, I. C.; Kolodziej, G.; Carlton, R.; Valentino, L.;
      Published Date:
      2018
      Source:
      Marine Biology, 165(6), 11.
      Description:
      The persistence of coral reef frameworks requires that calcium carbonate (CaCO3) production by corals and other calcifiers outpaces CaCO3 loss via physical, chemical, and biological erosion. Coral bleaching causes declines in CaCO3 production, but th...
      File Type:
      Filetype[PDF - 1.31 MB]
    4. Quantifying the impact of basin dynamics on the regional sea level rise in the Black Sea
      Personal Author:
      Kubryakov, A. A.; Stanichny, S. V.; Volkov, D. L.;
      Published Date:
      2017
      Source:
      Ocean Science, 13(3), 443-452.
      Description:
      Satellite altimetry measurements show that the magnitude of the Black Sea sea level trends is spatially uneven. While the basin-mean sea level rise from 1993 to 2014 was about 3.15 mm yr(-1), the local rates of sea level rise varied from 1.5-2.5 mm y...
      File Type:
      Filetype[PDF - 11.80 MB]
    5. Importance of ocean mesoscale variability for air-sea interactions in the Gulf of Mexico
      Personal Author:
      Putrasahan, D. A.; Kamenkovich, I.; Le Henaff, M.; Kirtman, B. P.;
      Published Date:
      2017
      Source:
      Geophysical Research Letters, 44(12), 6352-6362.
      Description:
      Mesoscale variability of currents in the Gulf of Mexico (GoM) can affect oceanic heat advection and air-sea heat exchanges, which can influence climate extremes over North America. This study is aimed at understanding the influence of the oceanic mes...
      File Type:
      Filetype[PDF - 1.59 MB]
    6. The Impact of Improved Thermistor Calibration on the Expendable Bathythermograph Profile Data
      Personal Author:
      Goes, M.; Babcock, E.; Bringas, F.; Ortner, P.; Goni, G.;
      Published Date:
      2017
      Source:
      Journal of Atmospheric and Oceanic Technology, 34(9), 1947-1961.
      Description:
      Expendable bathythermograph (XBT) data provide one of the longest available records of upper-ocean temperature. However, temperature and depth biases in XBT data adversely affect estimates of long-term trends of ocean heat content and, to a lesser ex...
      File Type:
      Filetype[PDF - 1.92 MB]
    7. An Extreme Event in the Eyewall of Hurricane Felix on 2 September 2007
      Personal Author:
      Aberson, S. D.; Zhang, J. A.; Ocasio, K. N.;
      Published Date:
      2017
      Source:
      Monthly Weather Review, 145(6), 2083-2092.
      Description:
      During a routine penetration into Hurricane Felix late on 2 September 2007, NOAA42 encountered extreme turbulence and graupel, flight-level horizontal wind gusts of over 83ms(-1), and vertical wind speeds varying from 10 ms (1) downward to 31ms (1) u...
      File Type:
      Filetype[PDF - 2.45 MB]
    8. Near-surface salinity and temperature structure observed with dual-sensor drifters in the subtropical South Pacific
      Personal Author:
      Dong, S. F.; Volkov, D.; Goni, G.; Lumpkin, R.; Foltz, G. R.;
      Published Date:
      2017
      Source:
      Journal of Geophysical Research-Oceans, 122(7), 5952-5969.
      Description:
      Three surface drifters equipped with temperature and salinity sensors at 0.2 and 5 m depths were deployed in April/May 2015 in the subtropical South Pacific with the objective of measuring near-surface salinity differences seen by satellite and in si...
      File Type:
      Filetype[PDF - 3.20 MB]
    9. The Dynamics of Cuba Anticyclones (CubANs) and Interaction With the Loop Current/Florida Current System
      Personal Author:
      Kourafalou, V.; Androulidakis, Y.; Le Henaff, M.; Kang, H.;
      Published Date:
      2017
      Source:
      Journal of Geophysical Research-Oceans, 122(10), 7897-7923.
      Description:
      Mesoscale anticyclonic eddies along the northern Cuban coast (CubANs) have been identified in the Straits of Florida, associated with the northward shift of the Florida Current (FC) and the anticyclonic curvature of the Loop Current (LC) at the weste...
      File Type:
      Filetype[PDF - 13.12 MB]
    10. Axisymmetric Initialization of the Atmosphere and Ocean for Idealized Coupled Hurricane Simulations
      Personal Author:
      Aksoy, A.; Zhang, J. A.; Klotz, B. W.; Uhlhorn, E. W.; Cione, J. J.;
      Published Date:
      2017
      Source:
      Journal of Advances in Modeling Earth Systems, 9(7), 2672-2695.
      Description:
      A new vortex-scale initialization scheme is presented for idealized coupled hurricane simulations. The atmospheric scheme involves construction of azimuthally averaged kinematic and thermodynamic initial fields based on historical composite data sets...
      File Type:
      Filetype[PDF - 11.78 MB]
    11. Genomic Variation and Evolution of Vibrio parahaemolyticus ST36 over the Course of a Transcontinental Epidemic Expansion
      Personal Author:
      Martinez-Urtaza, J.; van Aerle, R.; Abanto, M.; Haendiges, J.; Myers, R. A.; Trinanes, J.; Baker-Austin, C.; Gonzalez-Escalona, N.;
      Published Date:
      2017
      Source:
      Mbio, 8(6), 17.
      Description:
      Vibrio parahaemolyticus is the leading cause of seafood-related infections with illnesses undergoing a geographic expansion. In this process of expansion, the most fundamental change has been the transition from infections caused by local strains to ...
      File Type:
      Filetype[PDF - 2.27 MB]
    12. The Role of African Dust in Atlantic Climate During Heinrich Events
      Personal Author:
      Murphy, L. N.; Goes, M.; Clement, A. C.;
      Published Date:
      2017
      Source:
      Paleoceanography, 32(11), 1291-1308.
      Description:
      Increased ice discharge in the North Atlantic is thought to cause a weakening, or collapse, of the Atlantic meridional overturning circulation (AMOC) during Heinrich events. Paleoclimate records indicate that these periods were marked by severe tropi...
      File Type:
      Filetype[PDF - 2.41 MB]
    13. Autonomous Multi-Platform Observations During the Salinity Processes in the Upper-ocean Regional Study
      Personal Author:
      Lindstrom, E. J.; Shcherbina, A. Y.; Rainville, L.; Farrar, J. T.; Centurioni, L. R.; Dong, S. F.; D'Asaro, E. A.; Eriksen, C.; Fratantoni, D. M.; Hodges, B. A.; Hormann, V.; Kessler, W. S.; Lee, C. M.; Riser, S. C.; St Laurent, L.; Volkov, D. L.;
      Published Date:
      2017
      Source:
      Oceanography, 30(2), 38-48.
      Description:
      The Salinity Processes in the Upper-ocean Regional Study ( SPURS) aims to understand the patterns and variability of sea surface salinity. In order to capture the wide range of spatial and temporal scales associated with processes controlling salinit...
      File Type:
      Filetype[PDF - 4.42 MB]
    14. Comments on "Reanalyses and Observations: What's the Difference?"
      Personal Author:
      Hoffman, R. N.; Prive, N.; Bourassa, M.;
      Published Date:
      2017
      Source:
      Bulletin of the American Meteorological Society, 98(11), 2455-2460.
      File Type:
      Filetype[PDF - 5.34 MB]
    15. Wind-driven ocean dynamics impact on the contrasting sea-ice trends around West Antarctica
      Personal Author:
      Lee, S. K.; Volkov, D. L.; Lopez, H.; Cheon, W. G.; Gordon, A. L.; Liu, Y. Y.; Wanninkhof, R.;
      Published Date:
      2017
      Source:
      Journal of Geophysical Research-Oceans, 122(5), 4413-4430.
      Description:
      Since late 1978, Antarctic sea-ice extent in the East Pacific has retreated persistently over the Amundsen and Bellingshausen Seas in warm seasons, but expanded over the Ross and Amundsen Seas in cold seasons, while almost opposite seasonal trends ha...
      File Type:
      Filetype[PDF - 5.61 MB]
    16. Performance of Basin-Scale HWRF Tropical Cyclone Track Forecasts
      Personal Author:
      Alaka, G. J.; Zhang, X. J.; Gopalakrishnan, S. G.; Goldenberg, S. B.; Marks, F. D.;
      Published Date:
      2017
      Source:
      Weather and Forecasting, 32(3), 1253-1271.
      Description:
      The Hurricane Weather Research and Forecasting (HWRF) Model is a dynamical model that has shown annual improvements in its tropical cyclone (TC) track forecasts as a result of various modifications. This study focuses on an experimental version of HW...
      File Type:
      Filetype[PDF - 4.43 MB]
    17. Observations of Infrared Sea Surface Temperature and Air-Sea Interaction in Hurricane Edouard (2014) Using GPS Dropsondes
      Personal Author:
      Zhang, J. A.; Cione, J. J.; Kalina, E. A.; Uhlhorn, E. W.; Hock, T.; Smith, J. A.;
      Published Date:
      2017
      Source:
      Journal of Atmospheric and Oceanic Technology, 34(6), 1333-1349.
      Description:
      This study highlights infrared sensor technology incorporated into the global positioning system (GPS) dropsonde platforms to obtain sea surface temperature (SST) measurements. This modified sonde (IRsonde) is used to improve understanding of air-sea...
      File Type:
      Filetype[PDF - 3.98 MB]
    18. A Call for Evaluation of the Contribution Made by Resuce, Resuscitation, Rehabilitation, and Release Translocations to Kemp's Ridley Sea Turtle (Lepidochelys Kempii) Population Recovery
      Personal Author:
      Caillouet, C. W.; Putman, N. F.; Shaver, D. J.; Valverde, R. A.; Seney, E. E.; Lohmann, K. J.; Mansfield, K. L.; Gallaway, B. J.; Flanagan, J. P.; Godfrey, M. H.;
      Published Date:
      2016
      Source:
      Herpetological Conservation and Biology, 11(3), 486-496.
      Description:
      Kemp's Ridley Sea Turtle (Lepidochelys kempii) conservation practices permitted by the National Marine Fisheries Service (NMFS) and U.S. Fish and Wildlife Service (USFWS), under authority of the U. S. Endangered Species Act of 1973, include transloca...
      File Type:
      Filetype[PDF - 679.58 KB]
    19. Calculating Dropwindsonde Location and Time from TEMP-DROP Messages for Accurate Assimilation and Analysis
      Personal Author:
      Aberson, S. D.; Sellwood, K. J.; Leighton, P. A.;
      Published Date:
      2017
      Source:
      Journal of Atmospheric and Oceanic Technology, 34(8), 1673-1678.
      Description:
      Current practice is to transmit dropwindsonde data from aircraft using the TEMP-DROP format, which provides only the release location and time with 0.1 degrees latitude x 0.1 degrees longitude (about 11 km) and 1-h resolutions, respectively. The curr...
      File Type:
      Filetype[PDF - 858.42 KB]