Nutrients: low-level nitrite+nitrate and phosphate from R/V Oceanus OC404-01, OC404-04, OC415-01, OC415-03 cruises in the Sargasso Sea, 2004-2005 (EDDIES project)

Website: https://www.bco-dmo.org/dataset/3048
Version: 16 November 2007
Version Date: 2007-11-16

Project
» Eddies Dynamics, Mixing, Export, and Species composition (EDDIES)

Program
» Ocean Carbon and Biogeochemistry (OCB)
ContributorsAffiliationRole
Hansell, DennisUniversity of Miami Rosenstiel School of Marine and Atmospheric Science (UM-RSMAS)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

 PI:              Dennis Hansell
 of:              Rosenstiel School of Marine & Atmospheric Science (RSMAS), University of Miami
 dataset:         Nutrients - low-level nitrite+nitrate and phosphate
 platform:        R/V Oceanus

 Methodology: none provided with data
 

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Parameters

ParameterDescriptionUnits
stastation number dimensionless
lonlongitude, negative denotes West decimal degrees
latlatitude, negative denotes South decimal degrees
SID_nutsunique sample identifier alphanumeric
depth_nsample depth, nominal meters
NO2_NO3nitrite + nitrate micromoles/liter
PO4phosphate micromoles/liter
datesampling date YYYYMMDD
timesampling time HHMM
depthsample depth meters
depth_QFsample depth quality flag dimensionless
temp_CTDtemperature, from CTD, ITS-90 degrees Celsius
temp_QFCTD temperature quality flag dimensionless
salt_CTDCTD salinity, PSS-78 dimensionless
salt_QFCTD salinity quality flag dimensionless
oxygen_CTDCTD oxygen micromoles/kilogram
oxyCTD_QFCTD oxygen quality flag dimensionless
fluor_CTDCTD relative fluorescence RFU
fluor_QFrelative fluorescence quality flag dimensionless
irradirradiance microEinsteins/meter^2/second
irrad_QFirradiance quality flag dimensionless
densitydensity kilograms/meter^3
density_QFdensity quality flag dimensionless
DNNdissolved nitrate plus nitrite micromoles/liter
DNN_QFDNN quality flag dimensionless
DIPdissolved inorganic phosphate (soluble reactive phosphate) micromoles/liter
DIP_QFDIP quality flag dimensionless
eventunique sampling event number YYYYMMDDhhmm
sal_CTDCTD salinity, PSS-78 dimensionless
temptemperature, from CTD, ITS-90 degrees Celsius
NO2nitrite micromoles/liter
TOCtotal organic Carbon micromoles/liter
TONtotal organic Nitrogen micromoles/liter

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Deployments

OC404-01

Website
Platform
R/V Oceanus
Report
Start Date
2004-06-11
End Date
2004-07-03
Description
EDDIES 2004 Survey 1 cruise Funded by: NSF OCE-0241310 Original cruise data are available from the NSF R2R data catalog (Cruise DOI: 10.7284/900337)

Methods & Sampling
PI: Dennis Hansell of: Rosenstiel School of Marine & Atmospheric Science (RSMAS), University of Miami dataset: Nutrients - low-level nitrite+nitrate and phosphate dates: 15 June 2004 to 01 July 2004 (20040615-20040701) location: N: 33.697 S: 29.778 W: -66.601 E: -63.166 project/cruise: EDDIES/OC404-1 2004 Survey 1 platform: R/V Oceanus Methodology: none provided with data Change history: YYMMDD 050512: downloaded original data from EDDIES data web site; added to OCB database by Cyndy Chandler, OCB DMO

OC404-04

Website
Platform
R/V Oceanus
Report
Start Date
2004-07-25
End Date
2004-08-12
Description
EDDIES project 2004 Survey 2 cruise Funded by: NSF OCE-0241310 Original cruise data are available from the NSF R2R data catalog

Methods & Sampling
PI: Dennis Hansell of: Rosenstiel School of Marine & Atmospheric Science (RSMAS), University of Miami dataset: Low-level nutrients and CTD data dates: 26 July 2004 to 11 August 2004 (20040726-20040811) location: N: 31.942 S: 29.958 W: -66.603 E: -59.452 project/cruise: EDDIES/OC404-4 2004 Survey 2 platform: R/V Oceanus Methodology Change history: YYMMDD 061211: downloaded original data from EDDIES data web site; Filename: OC404-4-RSMAS-LowLevel-nuts.xls 071102: added to OCB database by Nancy Copley (WHOI) and Cyndy Chandler (BCO-DMO, WHOI) 071113: units confirmed by Quian Li (RSMAS); E2 code in original data replaced by nd to represent 'no data' DMO note: depth_n added to enable merge with bottle data;

OC415-01

Website
Platform
R/V Oceanus
Report
Start Date
2005-06-20
End Date
2005-07-15
Description
EDDIES project 2005 Survey 1 cruise Funded by: NSF OCE-0241310 Original cruise data are available from the NSF R2R data catalog

Methods & Sampling
PI: Dennis Hansell of: Rosenstiel School of Marine & Atmospheric Science (RSMAS), University of Miami dataset: Low-level nano-nutrients and CTD data dates: 23 June 2005 to 14 July 2005 (20050623-20050714) location: N: 33.4237 S: 28.7333 W: -67.3298 E: -61.9198 project/cruise: EDDIES/OC415-1 2005 Survey 1 platform: R/V Oceanus Methodology Change history: YYMMDD 071116: downloaded original data from EDDIES data web site; Filename: OC415-1 NanoNutirent Data RSMAS.xls 071117: added to OCB database by Cyndy Chandler (BCO-DMO, WHOI) units confirmed by Quian Li (RSMAS) DMO note: event, date and time are from cruise event log; depth_n estimated from depth to enable merge with bottle data;

OC415-03

Website
Platform
R/V Oceanus
Report
Start Date
2005-08-07
End Date
2005-08-26
Description
EDDIES project 2005 Survey 2 cruise Funded by: NSF OCE-0241310 Original cruise data are available from the NSF R2R data catalog

Methods & Sampling
PI: Dennis Hansell of: Rosenstiel School of Marine & Atmospheric Science (RSMAS), University of Miami dataset: Low-level nano-nutrients and CTD data dates: 09 August 2005 to 25 August 2005 (20050809 - 20050825) location: N: 33.0636 S: 29.2789 W: -69.4091 E: -63.1659 project/cruise: EDDIES/OC415-3 2005 Survey 2 platform: R/V Oceanus Methodology Change history: YYMMDD 071116: downloaded original data from EDDIES data web site; Filename: BOTTLE-OC415-3.xls 071117: added to OCB database by Cyndy Chandler (BCO-DMO, WHOI) units confirmed by Quian Li (RSMAS) DMO note: event, date and time are from cruise event log; depth_n estimated from depth to enable merge with bottle data;


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Project Information

Eddies Dynamics, Mixing, Export, and Species composition (EDDIES)


Coverage: Sargasso Sea


The original title of this project from the NSF award is: Collaborative Research: Impacts of Eddies and Mixing on Plankton Community Structure and Biogeochemical Cycling in the Sargasso Sea".

Prior results have documented eddy-driven transport of nutrients into the euphotic zone and the associated accumulation of chlorophyll. However, several key aspects of mesoscale upwelling events remain unresolved by the extant database, including: (1) phytoplankton physiological response, (2) changes in community structure, (3) impact on export out of the euphotic zone, (4) rates of mixing between the surface mixed layer and the base of the euphotic zone, and (5) implications for biogeochemistry and differential cycling of carbon and associated bioactive elements. This leads to the following hypotheses concerning the complex, non-linear biological regulation of elemental cycling in the ocean:

H1: Eddy-induced upwelling, in combination with diapycnal mixing in the upper ocean, introduces new nutrients into the euphotic zone.

H2: The increase in inorganic nutrients stimulates a physiological response within the phytoplankton community.

H3: Differing physiological responses of the various species bring about a shift in community structure.

H4: Changes in community structure lead to increases in export from, and changes in biogeochemical cycling within, the upper ocean.

Publications

Andrews, J.E., Hartin, C., and Buesseler, K.O.. "7Be Analyses in Seawater by Low Background Gamma-Spectroscopy.," Journal of Radioanalytical and Nuclear Chemistry, v.277, 2008, p. 253.

Andrews, J.E., Hartin, C., Buesseler, K.O.. "7Be Analyses in Seawater by Low Background Gamma-Spectroscopy," Journal of Radioanalytical and Nuclear Chemistry, v.277, 2008, p. 253.

Benitez-Nelson, C.R. and McGillicuddy, D.J.. "Mesoscale Physical-Biological-Biogeochemical Linkages in the Open Ocean: An Introduction to the Results of the E-Flux and EDDIES Programs.," Deep Sea Research II, v.55, 2008, p. 1133.

Benitez-Nelson, C.R. and McGillicuddy, D.J.. "Mesoscale Physical-Biological-Biogeochemical Linkages in the Open Ocean: An Introduction to the Results of the E-Flux and EDDIES Programs," Deep-Sea Research II, v.55, 2008, p. 1133.

Bibby, T.S., Gorbunov, M.Y., Wyman, K.W., Falkowski, P.G.. "Photosynthetic community responses to upwelling in mesoscale eddies in the subtropical North Atlantic and Pacific Oceans," Deep-Sea Research Part II: Topical Studies in Oceanography, v.55, 2008, p. 1310.

Buesseler, K.O., Lamborg, C., Cai, P., Escoube, R., Johnson, R., Pike, S., Masque, P., McGillicuddy, D.J., Verdeny, E.. "Particle Fluxes Associated with Mesoscale Eddies in the Sargasso Sea," Deep Sea Research II, v.55, 2008, p. 1426.

Carlson, C.A., del Giorgio, P., Herdl, G.. "Microbes and the dissipation of energy and respiration: From cells to ecosystems," Oceanography, v.20, 2007, p. 89.

Davis, C.S., and McGillicuddy, D.J.. "Transatlantic Abundance of the N2-Fixing Colonial Cyanobacterium Trichodesmium," Science, v.312, 2006, p. 1517.

Ewart, C.S., Meyers, M.K., Wallner, E., McGillicuddy, D.J., Carlson, C.A.. "Microbial Dynamics in Cyclonic and Anticyclonic Mode-Water Eddies in the Northwestern Sargasso Sea," Deep Sea Research II, v.55, 2008, p. 1334.

Ewart, C.S., Meyers, M.K., Wallner, E., McGillicuddy, D.J., Carlson, C.A.. "Microbial Dynamics in Cyclonic and Anticyclonic Mode-Water Eddies in the Northwestern Sargasso Sea," Deep-Sea Research II, v.55, 2008, p. 1334.

Goldthwait, S.A. and Steinberg, D.K.. "Elevated biomass of mesozooplankton and enhanced fecal pellet flux in cyclonic and mode-water eddies in the Sargasso Sea," Deep-Sea Research Part II: Topical Studies in Oceanography, v.55, 2008, p. 1360.

Greenan, B.J.W.. "Shear and Richardson number in a mode-water eddy," Deep-Sea Research Part II: Topical Studies in Oceanography, v.55, 2008, p. 1161.

Jenkins, W.J., McGillicuddy, D.J., and Lott III, D.E.. "The Distributions of, and Relationship Between 3 He and Nitrate in Eddies," Deep Sea Research II, v.55, 2008, p. 1389.

Jenkins, W.J., McGillicuddy, D.J., Lott III, D.E.. "The Distributions of, and Relationship Between 3 He and Nitrate in Eddies," Deep-Sea Research II, v.55, 2008, p. 1389.

Ledwell, J.R., McGillicuddy, D.J., and Anderson, L.A.. "Nutrient Flux into an Intense Deep Chlorophyll Layer in a Mode-water Eddy.," Deep Sea Research II, v.55, 2008, p. 1139.

Ledwell, J.R., McGillicuddy, D.J., Anderson, L.A.. "Nutrient Flux into an Intense Deep Chlorophyll Layer in a Mode-water Eddy," Deep-Sea Research II, v.55, 2008, p. 1139.

Li, Q.P. and Hansell, D.A.. "Intercomparison and coupling of MAGIC and LWCC techniques for trace analysis of phosphate in seawater," Analytical Chemica Acta, v.611, 2008, p. 68.

Li, Q.P., Hansell, D.A., McGillicuddy, D.J., Bates, N.R., Johnson, R.J.. "Tracer-based assessment of the origin and biogeochemical transformation of a cyclonic eddy in the Sargasso Sea," Journal of Geophysical Research, v.113, 2008, p. 10006.

Li, Q.P., Hansell, D.A., Zhang, J.-Z.. "Underway monitoring of nanomolar nitrate plus nitrite and phosphate in oligotrophic seawater," Limnology and Oceanography: Methods, v.6, 2008, p. 319.

Li, Q.P., Zhang, J.-Z., Millero, F.J., Hansell, D.A.. "Continuous colorimetric determination of trace ammonium in seawater with a long-path liquid waveguide capillary cell," Marine Chemistry, v.96, 2005, p. 73.

McGillicuddy, D.J., et. al.. "Eddy/Wind Interactions Stimulate Extraordinary Mid-Ocean Plankton Blooms," Science, v.316, 2007, p. 1021.

McGillicuddy, D.J., Ledwell, J.R., and Anderson, L.A.. "Response to Comment on "Eddy/Wind Interactions Stimulate Extraordinary Mid-Ocean Plankton Bloom".," Science, v.320, 2008.

McGillicuddy, D.J., Ledwell, J.R., Anderson, L.A.. "Response to Comment on "Eddy/Wind Interactions Stimulate Extraordinary Mid-Ocean Plankton Bloom"," Science, v.320, 2008.

McGillicuddy, et. al.. "Eddy/Wind Interactions Stimulate Extraordinary Mid-Ocean Plankton Blooms.," Science, v.316, 2007, p. 1021.

Mourino B., and McGillicuddy, D.J.. "Mesoscale Variability in the Metabolic Balance of the Sargasso Sea," Limnology & Oceanography, v.51, 2006, p. 2675.



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Program Information

Ocean Carbon and Biogeochemistry (OCB)


Coverage: Global


The Ocean Carbon and Biogeochemistry (OCB) program focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology that inform on and advance our understanding of ocean biogeochemistry. The overall program goals are to promote, plan, and coordinate collaborative, multidisciplinary research opportunities within the U.S. research community and with international partners. Important OCB-related activities currently include: the Ocean Carbon and Climate Change (OCCC) and the North American Carbon Program (NACP); U.S. contributions to IMBER, SOLAS, CARBOOCEAN; and numerous U.S. single-investigator and medium-size research projects funded by U.S. federal agencies including NASA, NOAA, and NSF.

The scientific mission of OCB is to study the evolving role of the ocean in the global carbon cycle, in the face of environmental variability and change through studies of marine biogeochemical cycles and associated ecosystems.

The overarching OCB science themes include improved understanding and prediction of: 1) oceanic uptake and release of atmospheric CO2 and other greenhouse gases and 2) environmental sensitivities of biogeochemical cycles, marine ecosystems, and interactions between the two.

The OCB Research Priorities (updated January 2012) include: ocean acidification; terrestrial/coastal carbon fluxes and exchanges; climate sensitivities of and change in ecosystem structure and associated impacts on biogeochemical cycles; mesopelagic ecological and biogeochemical interactions; benthic-pelagic feedbacks on biogeochemical cycles; ocean carbon uptake and storage; and expanding low-oxygen conditions in the coastal and open oceans.



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