Variation in airborne 134Cs, 137Cs, particulate 131I and 7Be maximum activities at high-altitude European locations after the arrival of Fukushima-labeled air masses

Autor: J. Bieringer, Erika Brattich, A. Dalheimer, Philipp Steinmann, Olivier Masson, Thomas Steinkopff, Laura Tositti, W. Ringer, Sybille Estier, Anne de Vismes-Ott, Pieter van Beek, Clemens Schlosser, Ilia Penev
Přispěvatelé: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), University of Bologna, Deutscher Wetterdienst [Offenbach] (DWD), Institute for Nuclear Research and Nuclear Energy (INRNE), Académie des sciences de Bulgarie, Austrian Agency for Health and Food Safety (AGES), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), PRP-ENV/STEME/LMRE, Laboratoire de Mesure de la Radioactivité dans l’Environnement, Masson, Olivier, Bieringer, Jacqueline, Brattich, Erika, Dalheimer, Axel, Estier, Sybille, Penev, Ilia, Ringer, Wolfgang, Schlosser, Clemen, Steinkopff, Thoma, Steinmann, Philipp, Tositti, Laura, Beek, Pieter Van, Vismes-Ott, Anne de
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Journal of Environmental Radioactivity
Journal of Environmental Radioactivity, Elsevier, 2016, 162-163, pp.14-22. ⟨10.1016/j.jenvrad.2016.05.004⟩
ISSN: 0265-931X
1879-1700
Popis: none 13 si The Fukushima-labeled air mass arrival, and later the cesium-134 (134Cs), cesium-137 (137Cs) and particulate iodine-131 (hereafter noted 131Ip) maximum levels were registered in Europe at different dates depending on the location. Most of those data were obtained at low-altitude sampling areas. Here, we compare the airborne levels registered at different high-altitude European locations (from 850 m to about 3500 m). The integrated 137Cs activity concentration was not uniform with regard to the altitude even after a long travel time/distance from Japan. Moreover, the relation of integrated 137Cs vs. altitude showed a linear decrease up to an altitude of about 3000 m. A similar trend was noticed for 131Ip (particulate fraction) while it increased above 3000 m. Comparison with 7Be activity concentration showed that, as far as the high altitude location is concerned, the 137Cs and 134Cs maximum concentrations corresponded to the 7Be maximum, suggesting downdraft movements from high tropospheric or stratospheric layers to be responsible for 137,134Cs increase and peak values. This was also confirmed by high potential vorticity and low relative humidity registered during the peak values. Masson, Olivier; Bieringer, Jacqueline; Brattich, Erika; Dalheimer, Axel; Estier, Sybille; Penev, Ilia; Ringer, Wolfgang; Schlosser, Clemens; Steinkopff, Thomas; Steinmann, Philipp; Tositti, Laura; Beek, Pieter Van; Vismes-Ott, Anne de Masson, Olivier; Bieringer, Jacqueline; Brattich, Erika; Dalheimer, Axel; Estier, Sybille; Penev, Ilia; Ringer, Wolfgang; Schlosser, Clemens; Steinkopff, Thomas; Steinmann, Philipp; Tositti, Laura; Beek, Pieter Van; Vismes-Ott, Anne de
Databáze: OpenAIRE
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