Arid
DOI10.1016/j.jmarsys.2011.05.004
Evaluation of biogeochemical cycles in an ensemble of three state-of-the-art numerical models of the Baltic Sea
Eilola, K.; Gustafsson, B. G.; Kuznetsov, I.; Meier, H. E. M.; Neumann, T.; Savchuk, O. P.
来源期刊JOURNAL OF MARINE SYSTEMS
ISSN0924-7963
EISSN1879-1573
出版年2011
卷号88期号:2页码:267-284
英文摘要

Three state-of-the-art coupled physical-biogeochemical models, the BAltic sea Long-Term large-Scale Eutrophication Model (BALTSEM), the Ecological Regional Ocean Model (ERGOM), and the Swedish Coastal arid Ocean Biogeochemical model coupled to the Rossby Centre Ocean circulation model (RCO-SCOBI), are used to calculate changing nutrient and oxygen dynamics in the Baltic Sea. The models are different in that ERGOM and RCO-SCOBI are three-dimensional (3D) circulation models while BALTSEM resolves the Baltic Sea into 13 dynamically interconnected and horizontally integrated sub-basins. The aim is to assess the simulated long-term dynamics and to discuss the response of the coupled physical-biogeochemical models to changing physical conditions and nutrient loadings during the period 1970-2005. We compared the long-term seasonal and annual statistics of inorganic nitrogen, phosphorus, and oxygen from hindcast simulations with those estimated from observations. We also studied the extension of hypoxic bottom areas covered by waters with O-2<2 ml O-2 l(-1) and cod reproductive volumes comprising waters with salinity >11 and O-2>2 ml O-2 l(-1). The models reproduce much of the nutrient biogeochemical cycling in the Baltic proper. However, biases are larger in the Bothnian Sea and Bothnian Bay. No model shows outstanding performance in all aspects but instead the ensemble mean results are better than or as good as the results of any of the individual models. Uncertainties are primarily related to differences in the bioavailable fractions of nutrient loadings from land and parameterizations of key processes like sediment fluxes that are presently not well known. Also the uncertainty related to the initialization of the models in the early 1960s influence the modeled biogeochemical cycles during the investigated period. (C) 2011 Elsevier B.V. All rights reserved.


英文关键词Baltic Sea Numerical modeling Coupled physical-biogeochemical modeling Nutrients Oxygen
类型Article
语种英语
国家Sweden
收录类别SCI-E
WOS记录号WOS:000293314900010
WOS关键词ALGAL-AVAILABLE PHOSPHORUS ; FRESH-WATER ; THICKNESS DISTRIBUTION ; BOUNDARY-CONDITION ; NORTH-SEA ; ICE ; GULF ; EUTROPHICATION ; CIRCULATION ; ECOSYSTEM
WOS类目Geosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography
WOS研究方向Geology ; Marine & Freshwater Biology ; Oceanography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/169336
作者单位Stockholm Univ, Balt Nest Inst, Stockholm, Sweden
推荐引用方式
GB/T 7714
Eilola, K.,Gustafsson, B. G.,Kuznetsov, I.,et al. Evaluation of biogeochemical cycles in an ensemble of three state-of-the-art numerical models of the Baltic Sea[J],2011,88(2):267-284.
APA Eilola, K.,Gustafsson, B. G.,Kuznetsov, I.,Meier, H. E. M.,Neumann, T.,&Savchuk, O. P..(2011).Evaluation of biogeochemical cycles in an ensemble of three state-of-the-art numerical models of the Baltic Sea.JOURNAL OF MARINE SYSTEMS,88(2),267-284.
MLA Eilola, K.,et al."Evaluation of biogeochemical cycles in an ensemble of three state-of-the-art numerical models of the Baltic Sea".JOURNAL OF MARINE SYSTEMS 88.2(2011):267-284.
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