Temat: biogeochemical modelling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nutrient turnover at the hypoxic boundary: flux measurements and model representation for the bottom water environment of the Gulf of Riga, Baltic Sea
Autorzy:: Eglite, E.
Lavrinovics, A.
Muller-Karulis, B.
Aigars, J.
Poikane, R.
Powiązania:: https://bibliotekanauki.pl/articles/47584.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: flux measurement
bottom water
denitrification
biogeochemical modelling
hypoxia
Riga Gulf
Baltic Sea
aquatic environment
Źródło:: Oceanologia; 2014, 56, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of the parametrization of water optical properties on the modelled sea surface temperature in the Baltic Sea
Autorzy:: Stramska, M.
Zuzewicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/49070.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
sea surface temperature
parametrization
optical property
water column
biogeochemical modelling
light propagation
vertical distribution
spectral range
photosynthetically available radiation
Źródło:: Oceanologia; 2013, 55, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Processes regulating pCO2 in the surface waters of the Central Eastern Gotland Sea: a model study
Autorzy:: Kuznetsov, I.
Neumann, T.
Schneider, B.
Yakushev, E.
Powiązania:: https://bibliotekanauki.pl/articles/48971.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
biogeochemical modelling
brackish water
carbon dioxide
Cyanoprokaryota
detritus
ecological status
ecosystem
ERGOM model
nitrogen fixation
seasonal change
surface water
water exchange
Opis:: This work presents a one-dimensional simulation of the seasonal changes in CO2 partial pressure (pCO2). The results of the model were constrained using data from observations, which improved the model’s ability to estimate nitrogen fixation in the central Baltic Sea and allowed the impact of nitrogen fixation on the ecological state of the Baltic Sea to be studied. The model used here is the public domain water-column model GOTM (General Ocean Turbulence Model), which in this study was coupled with a modifed Baltic Sea ecosystem model, ERGOM (The Baltic Sea Research Institute’s ecosystem model). To estimate nitrogen fixation rates in the Gotland Sea, the ERGOM model was modified by including an additional cyanobacteria group able to fix nitrogen from March to June. Furthermore, the model was extended by a simple CO2 cycle. Variable C:P and N:P ratios, controlled by phosphate concentrations in ambient water, were used to represent cyanobacteria, detritus and sediment detritus. This approach improved the model’s ability to reproduce sea-surface phosphate and pCO2 dynamics. The resulting nitrogen fixation rates in 2005 for the two simulations, with and without the additional cyanobacteria group, were 259 and 278 mmol N m−2 year−1 respectively.
Źródło:: Oceanologia; 2011, 53, 3
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ecohydrodynamic model of the Baltic Sea. Part 1. Description of the ProDeMo model
Autorzy:: Oldakowski, B.
Kowalewski, M.
Jedrasik, J.
Szymelfenig, M.
Powiązania:: https://bibliotekanauki.pl/articles/49157.pdf
Data publikacji:: 2005
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: hydrodynamic-ecological model
nutrient
ecohydrodynamic modelling
biogeochemical process
subregion
ProDeMo model
Baltic ecosystem
Baltic Sea
Gdansk Gulf
Opis:: The ProDeMo (Production and Destruction of Organic Matter Model), a 3D coupled hydrodynamic-ecological model, was formulated and applied to the whole Baltic Sea and the subregion of the Gulf of Gdańsk. It describes nutrient cycles (phosphorus, nitrogen, silicon) through the food web with 15 state variables, oxygen conditions and the parameterisation of water-sediment interactions. The present version of the model takes two groups of phytoplankton – diatoms and non-diatoms – as well as zooplankton into consideration. It covers the flow of matter and energy in the sea, including river discharges and atmospheric deposition. Numerical applications are embedded on a 1 NMgri d for the Gulf of Gdańsk and a 5 NMgri d for the Baltic Sea. Since the model results largely concur with observations, the model can be regarded as a reliable tool for analysing the behaviour of the Baltic ecosystem. Some examples of the spatial-temporal variability of the most important biological and chemical parameters are presented. The model results are compared with those of other modelling research in the Baltic Sea. Both the ProDeMo model algorithm and its computing procedures need to be further developed. The next version should therefore enable more phytoplankton groups to be defined, for example cyanobacteria, which are able to take up molecular nitrogen from the atmosphere (nitrogen fixation). Additionally, the sediment phase should be divided into active and non-active layers.
Źródło:: Oceanologia; 2005, 47, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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