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Hordoir, Robinson
Publications (10 of 23) Show all publications
Saraiva, S., Meier, M., Andersson, H., Höglund, A., Dieterich, C., Groger, M., . . . Eilola, K. (2019). Baltic Sea ecosystem response to various nutrient load scenarios in present and future climates. Climate Dynamics, 52(5-6), 3369-3387
Open this publication in new window or tab >>Baltic Sea ecosystem response to various nutrient load scenarios in present and future climates
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2019 (English)In: Climate Dynamics, ISSN 0930-7575, E-ISSN 1432-0894, Vol. 52, no 5-6, p. 3369-3387Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography; Oceanography
Identifiers
urn:nbn:se:smhi:diva-5195 (URN)10.1007/s00382-018-4330-0 (DOI)000463842700049 ()
Available from: 2019-04-23 Created: 2019-04-23 Last updated: 2019-04-23Bibliographically approved
Hordoir, R., Axell, L., Höglund, A., Dieterich, C., Fransner, F., Groger, M., . . . Haapala, J. (2019). Nemo-Nordic 1.0: a NEMO-based ocean model for the Baltic and North seas - research and operational applications. Geoscientific Model Development, 12(1), 363-386
Open this publication in new window or tab >>Nemo-Nordic 1.0: a NEMO-based ocean model for the Baltic and North seas - research and operational applications
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2019 (English)In: Geoscientific Model Development, ISSN 1991-959X, E-ISSN 1991-9603, Vol. 12, no 1, p. 363-386Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Identifiers
urn:nbn:se:smhi:diva-5159 (URN)10.5194/gmd-12-363-2019 (DOI)000456302000003 ()
Available from: 2019-02-05 Created: 2019-02-05 Last updated: 2019-02-05Bibliographically approved
Fransner, F., Gustafsson, E., Tedesco, L., Vichi, M., Hordoir, R., Roquet, F., . . . Nycander, J. (2018). Non-Redfieldian Dynamics Explain Seasonal pCO(2) Drawdown in the Gulf of Bothnia. Journal of Geophysical Research - Oceans, 123(1), 166-188
Open this publication in new window or tab >>Non-Redfieldian Dynamics Explain Seasonal pCO(2) Drawdown in the Gulf of Bothnia
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2018 (English)In: Journal of Geophysical Research - Oceans, ISSN 2169-9275, E-ISSN 2169-9291, Vol. 123, no 1, p. 166-188Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-4541 (URN)10.1002/2017JC013019 (DOI)000425589800011 ()
Available from: 2018-03-20 Created: 2018-03-20 Last updated: 2018-03-20Bibliographically approved
Hordoir, R., Höglund, A., Pemberton, P. & Schimanke, S. (2018). Sensitivity of the overturning circulation of the Baltic Sea to climate change, a numerical experiment. Climate Dynamics, 50(3-4), 1425-1437
Open this publication in new window or tab >>Sensitivity of the overturning circulation of the Baltic Sea to climate change, a numerical experiment
2018 (English)In: Climate Dynamics, ISSN 0930-7575, E-ISSN 1432-0894, Vol. 50, no 3-4, p. 1425-1437Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-4518 (URN)10.1007/s00382-017-3695-9 (DOI)000425328700041 ()
Available from: 2018-03-06 Created: 2018-03-06 Last updated: 2018-03-06Bibliographically approved
Hieronymus, M., Dieterich, C., Andersson, H. & Hordoir, R. (2018). The effects of mean sea level rise and strengthened winds on extreme sea levels in the Baltic Sea. Theoretical and Applied Mechanics Letters, 8(6), 366-371
Open this publication in new window or tab >>The effects of mean sea level rise and strengthened winds on extreme sea levels in the Baltic Sea
2018 (English)In: Theoretical and Applied Mechanics Letters, ISSN 2095-0349, Vol. 8, no 6, p. 366-371Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Research subject
Hydrology
Identifiers
urn:nbn:se:smhi:diva-5161 (URN)10.1016/j.taml.2018.06.008 (DOI)000456384400002 ()
Available from: 2019-02-05 Created: 2019-02-05 Last updated: 2019-02-05Bibliographically approved
Höglund, A., Pemberton, P., Hordoir, R. & Schimanke, S. (2017). Ice conditions for maritime traffic in the Baltic Sea in future climate. Boreal environment research, 22, 245-265
Open this publication in new window or tab >>Ice conditions for maritime traffic in the Baltic Sea in future climate
2017 (English)In: Boreal environment research, ISSN 1239-6095, E-ISSN 1797-2469, Vol. 22, p. 245-265Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-4196 (URN)000405410500001 ()
Available from: 2017-08-07 Created: 2017-08-07 Last updated: 2018-01-13Bibliographically approved
Pemberton, P., Löptien, U., Hordoir, R., Höglund, A., Schimanke, S., Axell, L. & Haapala, J. (2017). Sea-ice evaluation of NEMO-Nordic 1.0: a NEMO-LIM3.6-based ocean-sea-ice model setup for the North Sea and Baltic Sea. Geoscientific Model Development, 10(8), 3105-3123
Open this publication in new window or tab >>Sea-ice evaluation of NEMO-Nordic 1.0: a NEMO-LIM3.6-based ocean-sea-ice model setup for the North Sea and Baltic Sea
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2017 (English)In: Geoscientific Model Development, ISSN 1991-959X, E-ISSN 1991-9603, Vol. 10, no 8, p. 3105-3123Article in journal (Refereed) Published
National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-4289 (URN)10.5194/gmd-10-3105-2017 (DOI)000408100200001 ()
Available from: 2017-09-06 Created: 2017-09-06 Last updated: 2018-01-13Bibliographically approved
Kuznetsov, I., Eilola, K., Dieterich, C., Hordoir, R., Axell, L., Höglund, A. & Schimanke, S. (2016). Model study on the variability of ecosystem parameters in the Skagerrak-Kattegat area, effect of load reduction in the North Sea and possible effect of BSAP on Skagerrak-Kattegat area.
Open this publication in new window or tab >>Model study on the variability of ecosystem parameters in the Skagerrak-Kattegat area, effect of load reduction in the North Sea and possible effect of BSAP on Skagerrak-Kattegat area
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2016 (English)Report (Other academic)
Abstract [en]

Newly developed ecosystem model NEMO-Nordic-SCOBI was applied to Skagerrak - Kattegat area to investigate the variability of some indicators of the ecosystem. Also, two sensitivity runs were performed to investigate possible effect of the Baltic Sea Action Plan (BSAP) and a river loads reduction scenario on the Skagerrak - Kattegat area. The performed investigation could be used “to provide a basis to assist with the interpretation of measurement data before the Intermediate Assessments Eutrophication status assessment”. Comparison of simulation results with observations indicates acceptable model performance. Modeled sea surface salinity, temperature and dissolved inorganic phosphate (DIP) are in good agreement with observations. At the same time, the model has a bias in certain areas of the investigated region for dissolved inorganic nitrogen (DIN) and dissolved silicate during the winter season. However, the model in its current state shows good enough results for the performed investigation. Results of the two sensitivity studies show a decrease of sea surface nutrients concentrations during winter period in both regions. In the Skagerrak area the decrease is due to reduction in river nutrient loads in North Sea. In the Kattegat area there is a decrease of dissolved phosphate due to the implementation of BSAP. At the same time, in both scenarios, no significant changes were obtained for near bottom oxygen or surface layer Chl-a.

Abstract [sv]

Den nyligen utvecklade ekosystemmodellen NEMO-Nordic-SCOBI användes för att studera variabiliteten av några indikatorer för ekosystemet i Skagerrak- kattegatt området. Även två känslighetsstudier gjordes för att undersöka möjliga effekter av Baltic Sea Action Plan (BSAP) och en reduktion scenario av närsaltstillförsel på Skagerrak-Kattegatt området. Den utförda studien kan användas som underlag och stöd vid tolkningen av observationsdata inför utvärderingen ”Intermediate Assessments Eutrophication status assessment”. Jämförelsen mellan modelldata och observationer indikerar att modellens resultat är acceptabla. Modellerade ytvärden av salthalt, temperatur och löst fosfat (DIP) visar god överenskommelse med observerade värden. Samtidigt har modellresultaten avvikelser i vissa delområden vad gäller löst oorganiskt kväve (DIN) och löst kisel under vitertid. Dock visar modellen i sitt nuvarande tillstånd tillräckligt goda resultat för den aktuella studien. Resultaten från de två känslighetsstudierna visar en minskning av näringskoncentrationer i ytan under vintern i båda havsområdena. I Skagerrak är minskningen orsakad av reducerad närsaltstillförsel i Nordsjön. I Kattegatt minskar lösta fosfatet på grund av genomförandet av BSAP. Ingen av scenarierna visade någon signifikant påverkan på syre vid havsbotten eller på ytkoncentratiner av Chl-a.

Publisher
p. 60
Series
Oceanography, ISSN 0283-7714 ; 119
National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-2153 (URN)
Available from: 2016-05-11 Created: 2016-05-11 Last updated: 2018-01-10Bibliographically approved
Fransner, F., Nycander, J., Morth, C.-M., Humborg, C., Meier, M., Hordoir, R., . . . Deutsch, B. (2016). Tracing terrestrial DOC in the Baltic SeaA 3-D model study. Global Biogeochemical Cycles, 30(2), 134-148
Open this publication in new window or tab >>Tracing terrestrial DOC in the Baltic SeaA 3-D model study
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2016 (English)In: Global Biogeochemical Cycles, ISSN 0886-6236, E-ISSN 1944-9224, Vol. 30, no 2, p. 134-148Article in journal (Refereed) Published
Abstract [en]

The fate of terrestrial organic matter brought to the coastal seas by rivers and its role in the global carbon cycle are still not very well known. Here the degradation rate of terrestrial dissolved organic carbon (DOCter) is studied in the Baltic Sea, a subarctic semienclosed sea, by releasing it as a tracer in a 3-D circulation model and applying linear decay constants. A good agreement with available observational data is obtained by parameterizing the degradation in two rather different ways: one by applying a decay time on the order of 10years to the whole pool of DOCter and one by dividing the DOCter into onerefractory pool and one pool subject to a decay time on the order of 1year. The choice ofparameterization has asignificant effect on where in the Baltic Sea the removal takes place, which can be of importance whenmodeling the full carbon cycle and the CO2 exchange with the atmosphere. In both cases the biogeochemical decayoperates on time scales less than the water residence time. Therefore, only a minor fraction of the DOCter reaches the North Sea, whereas approximately 80% is removed by internal sinks within the Baltic Sea. This further implies that DOCter mineralization is an important link in land-sea-atmosphere cycling of carbon in coastal and shelf seas that are heavily influenced by riverine DOC.

National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-2026 (URN)10.1002/2014GB005078 (DOI)000372963900004 ()
Available from: 2016-05-03 Created: 2016-05-02 Last updated: 2018-01-10Bibliographically approved
Wang, S., Dieterich, C., Doescher, R., Höglund, A., Hordoir, R., Meier, M., . . . Schimanke, S. (2015). Development and evaluation of a new regional coupled atmosphere-ocean model in the North Sea and Baltic Sea. Tellus. Series A, Dynamic meteorology and oceanography, 67, Article ID 24284.
Open this publication in new window or tab >>Development and evaluation of a new regional coupled atmosphere-ocean model in the North Sea and Baltic Sea
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2015 (English)In: Tellus. Series A, Dynamic meteorology and oceanography, ISSN 0280-6495, E-ISSN 1600-0870, Vol. 67, article id 24284Article in journal (Refereed) Published
Abstract [en]

A new regional coupled model system for the North Sea and the Baltic Sea is developed, which is composed of the regional setup of ocean model NEMO, the Rossby Centre regional climate model RCA4, the sea ice model LIM3 and the river routing model CaMa-Flood. The performance of this coupled model system is assessed using a simulation forced with ERA-Interim reanalysis data at the lateral boundaries during the period 1979-2010. Compared to observations, this coupled model system can realistically simulate the present climate. Since the active coupling area covers the North Sea and Baltic Sea only, the impact of the ocean on the atmosphere over Europe is small. However, we found some local, statistically significant impacts on surface parameters like 2m air temperature and sea surface temperature (SST). A precipitation-SST correlation analysis indicates that both coupled and uncoupled models can reproduce the air-sea relationship reasonably well. However, the coupled simulation gives slightly better correlations even when all seasons are taken into account. The seasonal correlation analysis shows that the air-sea interaction has a strong seasonal dependence. Strongest discrepancies between the coupled and the uncoupled simulations occur during summer. Due to lack of air-sea interaction, in the Baltic Sea in the uncoupled atmosphere-standalone run the correlation between precipitation and SST is too small compared to observations, whereas the coupled run is more realistic. Further, the correlation analysis between heat flux components and SST tendency suggests that the coupled model has a stronger correlation. Our analyses show that this coupled model system is stable and suitable for different climate change studies.

National Category
Oceanography, Hydrology and Water Resources
Research subject
Oceanography
Identifiers
urn:nbn:se:smhi:diva-1928 (URN)10.3402/tellusa.v67.24284 (DOI)000369824300001 ()
Available from: 2016-05-02 Created: 2016-03-03 Last updated: 2018-01-10Bibliographically approved
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