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Tracer Distribution in the Pacific Ocean Following a Release Off Japan – What Does an Oceanic General Circulation Model Tell US? : Volume 8, Issue 3 (21/06/2011)

By Dietze, H.

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Book Id: WPLBN0003986582
Format Type: PDF Article :
File Size: Pages 26
Reproduction Date: 2015

Title: Tracer Distribution in the Pacific Ocean Following a Release Off Japan – What Does an Oceanic General Circulation Model Tell US? : Volume 8, Issue 3 (21/06/2011)  
Author: Dietze, H.
Volume: Vol. 8, Issue 3
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Kriest, I., & Dietze, H. (2011). Tracer Distribution in the Pacific Ocean Following a Release Off Japan – What Does an Oceanic General Circulation Model Tell US? : Volume 8, Issue 3 (21/06/2011). Retrieved from http://community.ebooklibrary.org/


Description
Description: IFM-GEOMAR, Leibniz Institute of Marine Sciences, Düsternbrooker Weg 20, 24105 Kiel, Germany. In the aftermath of an earthquake and tsunami on 11 March 2011 considerable amounts of radioactive materials were accidentally released into the sea off Fukushima-Daiichi, Japan. This study uses a three-dimensional eddy-resolving oceanic general circulation model to explore potential pathways of a tracer, similar to 137Cs, from the coast to the open ocean. Results indicate that enhanced concentrations meet a receding spring bloom offshore and that the area of enhanced concentrations offshore is strongly determined by surface mixed layer dynamics. However, huge uncertainties remain. Among them are the realism of the simulated cross-shelf transport and apparently inconsistent estimates of the particle reactivity of 137Cs which are discussed in a brief literature review. We argue that a comprehensive set of 137Cs measurements, including sites offshore, could be a unique opportunity to both evaluate and advance the evaluation of oceanic general circulation models.

Summary
Tracer distribution in the Pacific Ocean following a release off Japan – what does an oceanic general circulation model tell us?

Excerpt
Reardon, S.: Fukushima radiation creates unique test of marine life's hardiness, Science, 332, 292–292, 2011.; Antonov, J. I., Locarnini, R. A., Boyer, T. P., Mishonov, A. V., and Garcia H. E.: World Ocean Atlas 2005, vol. 2, edited by: Levitus, S., NOAA Atlas NESDIS 62, US Government Printing Office, Washington, D.C., 182 pp., 2006.; Behrenfeld, M. J.: Abandoning Sverdrup's critical depth hypothesis on phytoplankton blooms, Ecology, 4, 97–9897, 2010.; Dietze, H., Matear, R. J., and Moore, T. S.: Nutrient supply to anticyclonic meso-scale eddies off Western Australia estimated with artificial tracers released in a circulation model, Deep-Sea Res. Pt. I, 56, 9, 1440–1448, doi:10.1016/j.dsr.2009.04.012, 2009.; Giraud, X., Le Qéré, C., and da Cunha, L. C.: Importance of coastal nutrient supply for global ocean biogeochemistry, Global Biogeochem. Cy., 20, 2, doi: 10.1029/2006GB002717, 2008.; Griffies, S., Gnanadesikan, A., Dixon, K., Dunne, J., Gerdes, R., Harrison, M., Rosati, A., Russell, J., Samuels, B., Spelman, M., Winton, M., and Zhang, R.: Formulation of an ocean model for global climate simulations, Ocean Sci., 1, 45–79, 2005.; HELCOM: Radioactivity in the Baltic Sea, 1984–1991, Baltic Marine Environment Protection Commission – Helsinki Commission, Balt. Sea Environ. Proc. No. 61, Helsinki, 175 pp., 1995.; HELCOM: Radioactivity in the Baltic Sea, 1999–2006, Baltic Marine Environment Protection Commission – Helsinki Commission, Balt. Sea Environ. Proc. No. 117, Helsinki, 60 pp., 2009.; Heldal, H. E., Stupakoff, I., and Fisher, N. S.: Bioaccumulation of 137Cs and 57Co by five marine phytoplankton species, J. Environ. Radioactiv., 57, 231–236, 2001.; IAEA: Sediment distribution coefficients and concentration factors for biota in the marine environment, International Atomic Energy Agency, Technical Reports Series, 422, Wien, 95 pp., 2004.; Ilus, E.: The Chernobyl accident and the Baltic Sea, Boreal Environ. Res., 12, 1–10, 2007.; Ikäheimonen, T. K., Outola, I., Vartti, V.-P., and Kotilainen, P.: Radioactivity in the Baltic Sea: inventories and temporal trends of 137Cs and 90Sr in water and sediments, J. Radioanal. Nucl. Ch., 282, 419–425, doi:10.1007/s10967-009-0144-1, 2009.; Kobayashi, T., Otosaka, S., Togawa, O., and Hayashi, K.: Development of a non-conservative radionuclides dispersion model in the ocean and its application to surface Cesium-137 dispersion in the Irish Sea, J. Nucl. Sci. Technol., 44 (2), 238–247, 2007.; Locarnini, R. A., Mishonov, A. V., Antonov, J. I., Boyer, T. P., and Garcia, H. E.: World Ocean Atlas 2005, vol. 1: Temperature, edited by: Levitus, S., NOAA Atlas NESDIS 61, US Government Printing Office, Washington, D.C., 182 pp., 2006.; Large, W. G., McWilliams, J. C., and Doney S. C.: Oceanic vertical mixing – a review and a model with a nonlocal boundary-layer parameterization, Rev. Geophys., 32 (3), 363–403, 1994.; Mathews, T. and Fisher, N. S.: Trophic transfer of seven trace metals in a four-step marine food chain

 

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