caa a22 4500 477061303 CHVBK 20180405111401.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00048257 doi (NATIONALLICENCE)springer-10.1007/BF00048257 Radon-222 measurements during the Tropoz II campaign and comparison with a global atmospheric transport model [Elektronische Daten] [M. Ramonet, J. Le Roulley, P. Bousquet, P. Monfray] The aim of the 222Rn measurements during the airborne campaign TROPOZ II, was first to help in the interpretation of the photochemical studies, and secondly to furnish a data set of 222Rn in the troposphere, for validation of atmospheric transport models. In this paper we present the 222Rn measurements, and their simulation with a 3-D atmospheric transport model based on observed winds. The 222Rn was measured using the active daughters deposit technique with isokinetic aerosol sampling. We have obtained 44 measurements distributed between 65° North and 55° South, from 1 to 11 km height. In 25% of cases, we found relatively high concentrations (> 300 mBq·scm) of 222Rn in the high troposphere (>8 km). The results of 3D simulations and the calculations of back-trajectories allow us to find the origins of the high 222Rn concentrations. The transport model reproduced most of the observed synoptic variations, but it overestimates the concentrations which implies a vertical transport of excessive velocity. Kluwer Academic Publishers, 1996 radon-222 nationallicence airborne campaign nationallicence isokinetic sampling nationallicence transport model nationallicence back-trajectory nationallicence Ramonet M. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut Le Roulley J. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut Bousquet P. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut Monfray P. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl 23/2(1996-02-01), 107-136 0167-7764 23:2<107 1996 23 10874 https://doi.org/10.1007/BF00048257 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00048257 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ramonet M. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 700 1- Le Roulley J. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 700 1- Bousquet P. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 700 1- Monfray P. Centre des Faibles Radioactivités, Laboratoire Mixte CNRS-CEA, F-91198, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 23/2(1996-02-01), 107-136 0167-7764 23:2<107 1996 23 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer