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Friday, August 7, 2020 | History

2 edition of Modelling carbon and nutrient fluxes in Baltic Sea subsystems found in the catalog.

Modelling carbon and nutrient fluxes in Baltic Sea subsystems

Bärbel Müller-Karulis

Modelling carbon and nutrient fluxes in Baltic Sea subsystems

by Bärbel Müller-Karulis

  • 199 Want to read
  • 24 Currently reading

Published by LU Akadēmiskais apgāds in Rīga .
Written in English

    Subjects:
  • Nutrient pollution of water,
  • Mathematical models,
  • Phytoplankton,
  • Nutrient cycles

  • Edition Notes

    StatementBärbel Müller-Karulis ; scientific supervisor, Juris Aigars ;
    Classifications
    LC ClassificationsTD427.N87 M86 2010
    The Physical Object
    Pagination181 p. :
    Number of Pages181
    ID Numbers
    Open LibraryOL25154984M
    ISBN 109789984452609
    LC Control Number2011513012

    Commonly, the term eutrophication is related to the excessive nutrient load of a sea area. A more appropriate definition considers eutrophication as “an increase in the rate of supply of organic matter to an ecosystem” (Nixon ).This definition is based on the fact that organic matter is a major control for the marine food web and oxygen depletion in deeper water layers. Modelling the Inorganic Carbon System in the Baltic Sea 1 1. Introduction The Baltic Sea – an overview The Baltic Sea is situated in the densely populated northern Europe (see maps in Fig. 1). It is a semi-enclosed coastal sea that only connects to the world ocean through the Danish straits, here including Öresund.

    Date Published: /07 Keywords: air-sea fluxes, anthropogenic carbon, atmospheric co2, biogeochemical model, Earth System, fossil-fuel combustion, geology, inorganic carbon, interhemispheric transport, line simulation characteristics, model, northern ecosystems Abstract: Measurements of atmospheric CO2 concentration provide a tight constraint on the sum of the land . The model area of the Baltic Sea is located from ∘ E to ∘ E and from ∘ N to ∘ N. The spatial resolution of the model is 1/16 ∘ × 1/32 ∘ × 25 in longitude, latitude and vertically. The grid area in the horizontal plane contains × nodes; the sigma levels are unevenly distributed in .

    Modelling carbon and nutrient fluxes in Baltic Sea subsystems (B. Müller-Karulis, ). Vadīti 4 maģistra darbi. Vadīti 8 bakalaura darbi. 4. Zinātniskā darbība. Dalība pētījumu projektos: –   The Mediterranean Sea is a marine desert: although it receives large nutrient inputs from a rapidly growing coastal population, its offshore waters exhibit extremely low biological productivity. Here, we use a mass balance modelling approach to analyse the sources and fate of the two main nutrients that support marine biomass production: phosphorus (P) and nitrogen (N).


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Modelling carbon and nutrient fluxes in Baltic Sea subsystems by Bärbel Müller-Karulis Download PDF EPUB FB2

Modelling carbon and nutrient fluxes in Baltic Sea subsystems Promocijas darbs izstrādāts doktora grāda iegūšani ģeogrāfijā, vides zinātnes nozarē, vides aizsardzības apakšnozarē Darba zinātniskais vadītājs Docents Dr.

ģeogr. Juris Aigars Rīga, dynamics of nutrients and biota in Baltic Sea subsystems in order to identify major carbon and nutrient fluxes within the ecosystem and to describe the driving factors shaping short-term and long-term ecosystem changes.

Tasks of the work Construct models of nutrient and phytoplankton dynamics in different Baltic Sea subsystems. Atslēgas vārdi: jūras ekosistēma modelēšana, ilglaicīgas izmaiņas, bioģeoķīmisko procesu modelis, ECOPATH, Kategats, Rīgas līcisModelling carbon and nutrient fluxes in Baltic Sea subsytems Abstract Five models of carbon and nutrient fluxes in Baltic Sea subsystems are presented to compare the different modelling approaches Modelling carbon and nutrient fluxes in Baltic Sea subsystems book Author: Bärbel Müller-Karulis.

1. Introduction. Eutrophication of the Baltic Sea is an ongoing problem (HELCOM ).Although the external inputs of nutrients from both diffuse and point sources have reduced, more than 97% of the Baltic Sea area suffers from eutrophication due to past and present excessive inputs of nitrogen (N) and phosphorus (P).Author: Jari Koskiaho, Tomasz Okruszko, Mikolaj Piniewski, Pawel Marcinkowski, Sirkka Tattari, Solveig Johan.

Overall budgets for nutrient and humus are described for the Baltic Sea as well as for the subsystems, i.e., the Baltic proper, the Bothnian Bay and the Bothnian Sea.

The residence times for total Cited by: Coastal seas are highly productive systems, providing an array of ecosystem services to humankind, such as processing of nutrient effluents from land and climate regulation.

However, coastal ecosystems are threatened by human-induced pressures such as climate change and eutrophication. In the coastal zone, the fluxes and transformations of nutrients and carbon sustaining coastal ecosystem.

This book is a product of the joint JGOFS (Joint Global Ocean Flux Study)/LOICZ (Land–Ocean Interactions in the Coastal Zone) Continental Margins Task Team which was established to facilitate continental margins research in the two projects.

This book is a product of the joint JGOFS (Joint Global Ocean Flux Study)/LOICZ (Land–Ocean Interactions in the Coastal Zone) Continental Margins Task Team which was established to facilitate continental margins research in the two projects. It contains signi cant information on the physical. The mechanisms of nutrient dynamics as a complex interplay between external inputs and internal transports and transformations are best described by biogeochemical models.

In studies of the Baltic Sea, such models have been developed almost in parallel with the growth of eutrophication (Sjöberg et al., ; Savchuk,; Stigebrandt.

Journal of Marine Systems. Vol Issues 3–4, OctoberPagesOctoberPages   Higgason, K.D. and M. Brown. Local solutions to manage the effects of global climate change on a marine ecosystem: a process guide for marine resource managers. Nutrient Fluxes from Land to Sea: Consequences of Future Scenarios on the Oder River Basin – Lagoon – Coastal Sea System Gerald Schernewski, Climate change and the Baltic Sea action plan: Model simulations on the future of the western Baltic Sea, Journal of Marine Systems, /s,(), ( Benthic fluxes of soluble reactive phosphorus (SRP) and dissolved inorganic carbon (DIC) were measured in situ using autonomous landers in the Gulf of Finland in the Baltic Sea, on four.

Fluxes of dissolved organic carbon were generally low except for high efflux in the dark following a storm event. Due to the combination of small forest area and strong anthropogenic nutrient input, the net sink function for dissolved nitrogen and phosphorus provides. The book provides best estimates of carbon and nutrient fluxes in seven types of continental margins.

In each type, these fluxes are reported in detail individually for representative geographic regions, each of which is characterized by concise descriptions of the physical and biogeochemical settings.

In book: Eutrophication in the Baltic Sea. Present Situation, Nutrient Transport Processes, Remedial Strategies, Chapter: Chapter 5. Nutrient Dynamics in the Baltic Sea, Publisher: Springer, pp. The purpose of this study is to investigate the evolution of the Arctic Ocean’s carbon uptake capacity and impacts on ocean acidification with the changing sea-ice scape.

In particular, I study the influence on air-ice-sea fluxes of carbon with two major updates to commonly-used carbon cycle models I have included.

One, incorporation of sea ice. The Carbon Dioxide System in the Baltic Sea surface water by Karin Wesslander, September 9 The Baltic Sea marine system – human impact and natural variations by Erik Gustafsson, 1 October Ocean Climate Variability over Recent Centuries Explored by Modelling the Baltic Sea by Daniel Hansson, 25 September The Baltic Sea catchment model CSIM has been expanded by including base cations, anions, C org, and C T (taking into account the outputs of LPJ-GUESS), and can now calculate parameters such as river runoff, nutrient load, total alkalinity, pH, and pCO 2 for the Baltic Sea sub-basins.

The Baltic Sea model PROBE-Baltic has been expanded by. A Residence times box models and shear fluxes in tidal channel flows A J Hazelden R Andrews J G Wells Organic and nutrient fluxes.

ammonium average Baltic Baltic Sea basin benthic Biol biomass bottom Calstock carbon changes Chesapeake Bay chlorophyll-a coast coastal Columbia River concentrations copepods correlated denitrification.

The simulated response of the Baltic Sea trophic state to this very large reduction is verified by a similar simulation made with a much more complex processoriented model.

Both models indicate that after initial, rather rapid changes the system goes into much slower evolution, and nutrient cycles would not become balanced even after years.The model consists of a circulation model, which is an implementation of the Modular Ocean Model (MOM 2) for the Baltic Sea and an embedded ecosystem model based on a nine‐component model (ERGOM [Neumann, ]).

The model was driven with realistic atmospheric forcing, river loads, and atmospheric deposition of nutrients. The 'new' BALTEX box: new to Phase II are the integration of nutrient fluxes and the carbon cycle. Nutrients (Nu) from anthropogenic activities (households, agriculture, industries) enter the Baltic Sea through atmospheric deposition (mainly nitrogen) and riverine runoff.

There is a net carbon flux (C) to the atmosphere from land by excess CO 2.