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Correction published on 24 May 2021, see Water 2021, 13(11), 1466.
Review

Accounting for Dissolved Organic Nutrients in an SPBEM-2 Model: Validation and Verification

1
Shirshov Institute of Oceanology, Russian Academy of Sciences, 117997 Moscow, Russia
2
Russian State Hydrometeorological University, 192007 St.-Petersburg, Russia
3
Baltic Nest Institute, Stockholm University Baltic Sea Centre, SE-10691 Stockholm, Sweden
*
Authors to whom correspondence should be addressed.
Water 2020, 12(5), 1307; https://doi.org/10.3390/w12051307
Received: 9 March 2020 / Revised: 28 April 2020 / Accepted: 30 April 2020 / Published: 5 May 2020
(This article belongs to the Special Issue Marine Biogeochemical Modeling)
Modern models of the Baltic Sea eutrophication describe only a bioavailable fraction of the nutrient input from land, thus introducing uncertainty into forcing. In order to alleviate this uncertainty, the coupled 3D hydrodynamical-biogeochemical St. Petersburg Eutrophication Model (SPBEM) has been expanded with variables representing dissolved organic nutrients. The model modification involves an explicit description of the labile and refractory fractions of dissolved organic nitrogen and phosphorus, in addition to their particulate forms, represented by the detritus variables. The modified SPBEM-2 allows for a full account of the total amounts of nutrients reported in field measurements and presented in environmental documents. Particularly, a model description of detritus, as the only bulk organic matter variable, has been replaced by more realistic parameterizations with adequate rates of settling and mineralization. The extensive validation and verification of the model performance in the Gulf of Finland from 2009 to 2014, based on over 4000 oceanographic stations, shows that SPBEM-2 plausibly reproduces all the major large-scale features and phenomena of the ecosystem dynamics in the Gulf of Finland, especially in its surface productive layer. These demonstrated capabilities of SPBEM-2 make the model a useful tool, both in studies of biogeochemical interactions and in historical and scenario simulations. View Full-Text
Keywords: biogeochemical model; eutrophication; dissolved organic nutrients; validation and verification; Gulf of Finland; Baltic Sea biogeochemical model; eutrophication; dissolved organic nutrients; validation and verification; Gulf of Finland; Baltic Sea
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MDPI and ACS Style

Isaev, A.; Vladimirova, O.; Eremina, T.; Ryabchenko, V.; Savchuk, O. Accounting for Dissolved Organic Nutrients in an SPBEM-2 Model: Validation and Verification. Water 2020, 12, 1307. https://doi.org/10.3390/w12051307

AMA Style

Isaev A, Vladimirova O, Eremina T, Ryabchenko V, Savchuk O. Accounting for Dissolved Organic Nutrients in an SPBEM-2 Model: Validation and Verification. Water. 2020; 12(5):1307. https://doi.org/10.3390/w12051307

Chicago/Turabian Style

Isaev, Alexey, Oksana Vladimirova, Tatjana Eremina, Vladimir Ryabchenko, and Oleg Savchuk. 2020. "Accounting for Dissolved Organic Nutrients in an SPBEM-2 Model: Validation and Verification" Water 12, no. 5: 1307. https://doi.org/10.3390/w12051307

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