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3 edition of Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site) found in the catalog.

Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site)

Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site)

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Published by National Aeronautics and Space Administration, Goddard Space Flight Center, Available from NASA Center for AeroSpace Information in Greenbelt, Md, Hanover, MD .
Written in English

    Subjects:
  • Atmospheric composition.,
  • Biogeochemistry.,
  • Carbon cycle.,
  • Environment models.,
  • Annual variations.

  • Edition Notes

    Other titlesModeling biogeochemical physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site)
    StatementSergio R. Signorini, Charles R. McClain, James R. Christian.
    SeriesNASA/TP -- 2001-209991., NASA technical paper -- 209991.
    ContributionsMcClain, C. R., Christian, James R., Goddard Space Flight Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18182579M

    Sea grasses provide shelter for baby fish and crabs etc, they also help produce carbon dioxide, which is a part of the carbon cycle. They also provide food for bigger fish. Characterize the environmental conditions most favorable for the growth of coral reefs in tropical ocean waters. The Black Sea is a body of water and marginal sea of the Atlantic Ocean between Eastern Europe, the Caucasus, and Western Asia. It is supplied by a number of major rivers, such as the Danube, Dnieper, Southern Bug, Dniester, Don, and the watersheds of many countries drain into the Black Sea beyond the six that immediately border it. The Black Sea has an area of , km 2 (, Coordinates: 44°N 35°E / 44°N 35°ECoordinates: . At-sea Experience: research cruises have been conducted in study areas including the North Pacific Ocean, North Atlantic Ocean, Mediterranean Sea, Equatorial Pacific Ocean, and Arabian Sea. Only research cruises from September – September are shown below. particular, in the Ulleung Basin. Through linear inverse modeling, the mean flux of denitrification in the UB is estimated as ~ µmol⋅m−2 ⋅day, and the mean rate is ranged from × ~×mol⋅d−1. However, note that the East Sea is still high concentration in oxygen compared with the condition denitrified.


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Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site) Download PDF EPUB FB2

Modeling Biogeochemical-Physical Interactions and Carbon Flux in the Sargasso Sea [Sergio R. Signorini, Nasa Technical Reports Server (Ntrs), Et Al] on *FREE* shipping on qualifying offers. An ecosystem-carbon cycle model is used to analyze the biogeochemical-physical interactions and carbon fluxes in the Bermuda Atlantic Time-series Study (BATS) site for the Author: Sergio R.

Signorini. Modeling Biogeochemical-Physical Interactions and Carbon Flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site) Sergio R. Signorini, SAIC, Beltsville, Maryland Charles R.

McClain, Office for Global Carbon Studies, NASA Goddard Space Flight Center, Greenbelt, Maryland James R. Christian, University of Maryland, ESSIC, College Park. Modeling Biogeochemical-Physical Interactions and Carbon Flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site) Article (PDF Available) November with 33.

Get this from a library. Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time-series Study site). [Sergio Signorini; Charles R McClain; James Robert Christian; Goddard Space Flight Center.].

An ecosystem-carbon cycle model is used to analyze the biogeochemical-physical interactions and carbon fluxes in the Bermuda Atlantic Time-series Study (BATS) site for the period of The model results compare well with observations (most variables are within 8% of observed values).

Abstract. We collected in situ bio-optical and physical oceanographic data using the MVMS (Multi-Variable Moored System) 34N 70W in the Sargasso Sea for nine months in in the upper meters.

The sampled oceanographic parameters include temperature, currents, photosynthetically available radiation, beam attenuation coefficient, stimulated fluorescence, and dissolved oxygen Author: J. Wiggert, T. Dickey, M. Hamilton, T. Granata, J. Marra, C. Langdon, D. Siegel, Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea book.

Washburn. THE net exchange of carbon dioxide between the atmosphere and the ocean, and thus the nature of the oceanic carbon sink, is dominated by the seasonal dynamics of carbon.

Summary. Patterns of chemical distributions within the ocean are primarily controlled by biological processes and ocean circulation. Major features of this biogeochemical mosaic include removal of nutrients from warm surface ocean waters, concentration of these same nutrients in deep-ocean waters, and depletion of dissolved oxygen at intermediate water by: 2.

Atmospheric wet deposition rates of nitrate and ammonia on Bermuda collected in the Atmosphere Ocean Chemistry Experiment (AEROCE) are compared with the synoptic measurements of carbon and nitrogen cycling from the U.S. Joint Global Ocean Flux Study (JGOFS) Bermuda Atlantic Time Series Study (BATS) station, 75 km southeast of by: 2 time series collected at the U.S.

Joint Global Ocean Flux Study Bermuda Atlantic Time-series Study (BATS) site (N, W) in the Sargasso Sea surrounding Bermuda. Sargasso Sea waters are the original source for Bermuda platform water, providing a context for understanding the biogeochemical modification of reef water at Hog Reef by: Biogeochemical impacts due to mesoscale eddy activity in the Sargasso Sea as measured at the Bermuda Atlantic Time-series Study (BATS)Cited by: Modeling biogeochemical-physical interactions and carbon flux in the Sargasso Sea (Bermuda Atlantic Time Mostra di disegni di Telemaco Signorini / Presentazione di Palma Bucarelli: Galleria nazionale d'arte m.

A reanalysis of the Sargasso Sea 3 He time-series using a ‘flux gauge technique’ (FGT) (Jenkins and Doney, ) yields an upward-revised estimate of ∼± mol N m −2 yr −1. The FGT estimate of new production is derived from the flux of 3 He to the mixed layer and the 3 He:NO 3 − ratio at the depth from which seawater is Cited by: For example, recent modeling work and direct measurements of air-sea carbon dioxide flux produce very different estimates of the air-sea flux in the northern hemisphere.

Ocean Dynamics and the Carbon Cycle Principles and Mechanisms. students with the tools to examine the range of large-scale physical and dynamic phenomena that control the ocean carbon cycle and its interaction with the atmosphere.

New insights into the ocean heat budget closure problem from analysis of the SOC air-sea flux climatology Author: Richard G. Williams, Michael J. Follows. The earth's surface fluids comprise a dynamic and highly variable coupled physical, biological and chemical system.

The oceanic component of this system is controlled by ecosystem-biogeochemical-physical processes interacting over a vast range of scales in space and time. This is. Biogeochemical interactions control a temporal succession in the elemental composition of marine communities and particulate organic carbon, nitrogen, and phosphorus concentrations over a 3‐yr period.

We found that variation in the particulate organic matter (POM) concentrations and ratios were related to seasonal oscillations of Cited by: Abstract.

The bioavailability of nutrients represents one of the most important factors controlling the strength of the biological carbon pump and ultimately the impact of ocean biology on atmospheric CO those nutrients, the macro-nutrients nitrate (NO 2-) and phosphate (PO ) play a particularly important role in limiting biological productivity as evidenced by their often near Cited by:   1 Introduction.

The delivery of organic carbon from the surface, oligotrophic ocean to deep waters below the thermocline, termed “the biological pump”, plays a key role in the regulation of global climate [Volk and Hoffert, ; Falkowski et al., ].Export production (EP) is the biologically fixed carbon that escapes remineralization in the upper ocean through gravitational settling Cited by: Measured bSiO 2 export rates were more than a factor of two higher (pSargasso Sea.

Furthermore it appears that % (average 86±14%) of the total POC export measured in this study was due to diatoms. Simulation of upper-ocean biogeochemistry with a flexible-composition phytoplankton model: C, N and Si cycling in the western Sargasso Sea. Mathieu Mongin1,2, David M. Nelson1, Philippe Pondaven2, Mark A.

Brzezinski3 and Paul Tréguer2. 1College of Oceanic and Atmospheric Sciences, Oregon State University 2Institut Universitaire Européen de la Mer, Plouzané, France.

Mesoscale variations of biogeochemical properties in the Sargasso Sea D. McGillicuddy Jr.,1 R. Johnson,2 D.

Siegel,3,4 A. Michaels,5 N. Bates,2 and A. Knap2 Abstract. A mesoscale resolution biogeochemical survey was carried out in the vicinity of the U.S. Joint Global Ocean Flux Study Bermuda Atlantic Time-series Study (BATS) site.

Buy Seasonal Carbon Cycling in the Sargasso Sea Near Bermuda (Bulletin of the Scripps Institution of Oceanography) on FREE SHIPPING on qualified ordersCited by: 8. Biological processes in the oceans play a crucial role in regulating the fluxes of many important elements such as carbon, nitrogen, sulfur, oxygen, phosphorus, and silicon.

As we come to the end of the 20th century, oceanographers have increasingly focussed on how these elements are cycled within.

enhanced production, grazing and carbon export associated with core and edge of an anticyclonic eddy in the sargasso sea sargasso sea (abstract id)-oral. ASLO Aquatic Sciences MeetingNew Orleans, Feb, (Feb ). Carbon-Cycle OGCMs of the early JGOFS Period New Production: Restoring of surface nutrients.

POM, DOM with fixed decay rates. Bacastow & Maier-Reimer () Najjar et al. (): OCMIP1, OCMIP2 Simulated annual sea-air flux of pre-industrial CO2 (OCMIP1, Sarmiento et al., ). Look more realistic than box models.

Seem to converge w.r. integral. The uptake of organic matter by bacteria is a major carbon-flow pathway, and its variability can change the overall flux of carbon in the ocean and, therefore, by: For example, at the BATS site in the western Sargasso Sea, the modeled DOC removal rate (estimated from Figure 5a at ∼– mmol C m −2 yr −1) is larger than a 9‐year annual mean particulate organic carbon (POC) flux at m of mmol C m −2 yr −1 [Steinberg et al., ].

In contrast, POC export fluxes will far exceed. Sum of POC flux and dissolved organic carbon (DOC) flux at m was also estimated from the carbon budget ( mol-C m − 2 year − 1: Wakita et al.

Thus, Δ int AN (eddy)-supported annual PP (– mol-C m − 2 year − 1) estimated in this study is comparable to the annual C export flux estimated from previous by: 5. A light-driven, one-dimensional dimethylsulfide biogeochemical cycling model for the Sargasso Sea Dierdre A.

Toole,1 David A. Siegel,2 and Scott C. Doney1 Received 11 February ; revised 26 November ; accepted 21 December ; published 12 April [1] We evaluate the extent to which dimethylsulfide (DMS) cycling in an open-ocean.

Hansell, DA & Carlson, CA' Biogeochemistry of total organic carbon and nitrogen in the Sargasso Sea: Control by convective overturn ', Deep-Sea Research Part II: Topical Studies in Oceanography, vol. 48, no.pp. Cited by: | Shaping the Future Faculty Profiles. Toggle navigation.

Patient Care. Tracer-based assessment of the origin and biogeochemical transformation of a cyclonic eddy in the Sargasso Sea Qian P.

Li,1 Dennis A. Hansell,2 Dennis J. McGillicuddy Jr.,3 Nicholas R. Bates,4 and Rodney J. Johnson4 Received 31 March ; revised 26 June ; accepted 25 July ; published 11 October - Remote Sensing and Ocean Biogeochemistry of the Sargasso Sea. - Optical characterization of the ocean at the Bermuda Atlantic Time-Series.

- Temporal variability in the biogeochemistry of the Sargasso Sea. - The Acantharia-algal symbiosis in upper ocean carbon and nitrogen cycles. Phytoplankton responses to atmospheric metal deposition in the coastal and open-ocean Sargasso Sea. Particulate organic carbon increased and was most sensitive to changes in picoeukaryote abundance.

Phytoplankton community composition differed depending on the chemistry of the aerosol by: Phytoplankton responses to atmospheric metal deposition in the coastal and open-ocean Sargasso Sea Katherine R. Mackey 1,2,3 *, Kristen N. Buck 4, John R. Casey 4,5,Abigail Cid 6, MichaelW.

Lomas 4, Yoshiki Sohrin 6 andAdina Paytan 1 1 Institute for Marine Science, University of California at Santa Cruz, Santa Cruz, CA, USA 2. Hydrography, nutrients, and carbon pools in the Pacific sector of the Southern Ocean: Implications for carbon flux.

Journal of Geophysical Research, (C4): 31) Hansell, D.A., C.A. Carlson. Biogeochemistry of total organic carbon and nitrogen in the Sargasso Sea: control by convective overturn. Deep-Sea Research II, Jackson, G. and A. Burd (). A model for the distribution of particle ux in the mid-water column controlled by subsurface biotic interactions.

Deep-Sea Research II 49, – Burd, A. and K. Dunton (). Field veri cation of a light-driven model of biomass changes in the sea-grass Halodule wrightii. The unique metal requirements and toxicity thresholds of different phytoplankton taxa are therefore important in determining whether segments of the overall population will respond to trace metal availability from atmospheric metal deposition.

The Sargasso Sea is an oligotrophic region in the western North Atlantic Ocean where (co)limitation Cited by: 1) Physical-biogeochemical interactions and their impact on the ocean solubility and biological pump, and the global carbon cycle.

2) Modeling phytoplankton size distribution and interfacing with taxonomic groups existing in NOBM to better estimate biomass regionally and. The adsorption of phosphate on manganese dioxide (δMnO2) was determined in seawater as a function of pH, temperature, and salinity.

The adsorption in a simple electrolyte solution ( M NaCl) was adequately fitted using the triple-layer surface complexation model, assuming that phosphate formed outer-sphere complexes on the surface of by: Cutter, G.

A. "Production and sea-air flux of carbonyl sulfide in the coastal environment: Year 3" $84, - Cutter, G. A.; Burdige, D. J. "Atmospheric deposition of "toxics" to the Chesapeake Bay: Virginia/Southern Bay trace element program" $54, - Xinsheng Zhang.

Save to Address Book (VCard) Xinsheng Zhang Ecosystem Modeler Cooperative Oxford Laboratory S Morris St Oxford, MD USA Phone: () Fax: () Email: @