Anthropogene radioaktivität in den nordmeeren und im arktischen ozean — ergebnisse eines forschungsprojektes

Nies, H.; Harms, I.; Kärcher, Michael; Dethleff, Dirk; Bahe, C.; Kuhlmann, Gesa; Oberhuber, Josef M.; Backhaus, Jan O.; Kleine, Eckhard; Loewe, Peter; Матишов, Д. Г.; Stepanov, А. V.; Vasiliev, O. F.

doi:10.1007/bf02764228

Cited by 21 publications

(23 citation statements)

References 55 publications

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“…9), and thereby influence the simulated speed and pathway of the tracers. For instance, the spreading of the Sellafield signal in the Arctic Ocean in this study is quite different from that in [Nies et al, 1998]. In the latter study, peak values of the Sellafield signal were obtained in 1985 and 1990 at the North Pole, whereas mainly found on the Atlantic side of the Pole in this study ( Fig.…”

Section: Discussioncontrasting

confidence: 83%

“…In the model study of [Nies et al, 1998], monthly mean climatological forcing fields were used, yielding a simulated transport time from Sellafield to the Barents Sea of 6 years. In the simulation presented here, the corresponding time is 4-5 years, or approximately the transit time based on observations.…”

Section: Discussionmentioning

confidence: 99%

“…Nuclear bomb testing, the Chernobyl accident and release from the European reprocessing plants Sellafield (the UK) and Cap de La Hague (France) are the most important sources for the radionuclides in the North Atlantic-Arctic region ( [Nies et al, 1998] S. Nielsen, personal communication, 2001) is shown in Fig.…”

Section: The Radionuclides Simulationmentioning

confidence: 99%

“…The objective of the study is to use 137 Cs and 90 Sr to simulate the transport and dispersion of coastal pollution from Europe to the Arctic Ocean (e.g., [Dahlgaard, 1995 andNies et al, 1998]), and to assess the relative contributions from the nuclear bomb testing and the Sellafield release in the region. The release from the Chernobyl accident in 1986 is not included in the present integration because of uncertainties in the temporal-spatial source function.…”

Section: Introductionmentioning

confidence: 99%

“…The simulation differs from the large scale OGCM simulation by [Nies et al, 1998] in the following ways: a fully on-line instead of off-line integration procedure is adopted; the model is forced with synoptic (i.e. daily) atmospheric fields instead of climatological (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Simulating transport of non-Chernobyl 137Cs and 90Sr in the North Atlantic–Arctic region

Gao¹,

Drange

Bentsen

et al. 2004

Journal of Environmental Radioactivity

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The spatial and temporal distributions of the anthropogenic radionuclides 137 Cs and 90 Sr, originating from nuclear bomb testing and the Sellafield reprocessing plants in the Irish Sea, are simulated using a global version of the Miami Isopycnic Coordinate Ocean Model (MICOM). The physical model is forced with daily atmospheric re-analysed fields for the period 1950 to present. Comparison of temporal evolution of observed and simulated concentrations of 137 Cs have been conducted for the regions east of Scotland, west of central Norway and at the entrance of the Barents Sea. It follows that the radionuclides from the Sellafield discharge reach the Barents Sea region after 4-5 years, in accordance with observations. The simulation provides a detailed distribution and evolution of the radionuclides over the integration time. For the Atlantic waters off the coast of Norway and in the southern Barents Sea, the atmospheric fallout dominates over the Sellafield release up to the mid 1960s and from the early 1990s, whereas Sellafield is the main source for the two radionuclides in the 1970s and 1980s. It is furthermore argued that model systems like the one presented here can be used for future prediction of radioactive contaminations in the Nordic Seas and the Arctic Ocean, for instance under various global warming scenarios.

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Section: Discussioncontrasting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: The Radionuclides Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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