Heat-Wave Events in Spain: Air Mass Analysis and Impacts on 7Be ConcentrationsReport as inadecuate




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Advances in Meteorology - Volume 2016 2016, Article ID 8026018, 10 pages -

Research Article

European Commission, Joint Research Centre JRC, Institute for Transuranium Elements ITU, Via Enrico Fermi 2749, 21027 Ispra, Italy

Environmental Chemistry and Radioactivity Laboratory, Department of Chemistry -G. Ciamician-, Alma Mater Studiorum University of Bologna, Via Selmi 2, 40126 Bologna, Italy

Received 7 March 2016; Accepted 23 May 2016

Academic Editor: Mastura Mahmud

Copyright © 2016 M. A. Hernández-Ceballos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present paper describes and characterizes the air mass circulation during the heat-wave events registered during the period 2005–2014 over Spain, paying special attention to the role of the Saharan circulations. Backward trajectories at 500, 1500, and 3000 m in Seville south, Madrid centre, and Bilbao north during the thirteen heat-wave events identified are analysed. Finally, the impact of the heat-wave events and of each advection pattern on

Be activity concentrations is also analysed. The heat-wave events are characterized roughly by western, southern, and nearby advections, with a higher frequency of the first two types. The analysis shows an increase of African air masses with height, presenting a different spatial impact over Spain, with a decreasing occurrence and a decrease in the simultaneous occurrence percentage from south to north. On average, the

Be activity concentrations during these events show an increase of concentrations in central 21% and southern 18% areas and a decrease in northern 13% Spain. This increase is not associated with Saharan air masses but instead with the arrival of distant westerly air masses.





Author: M. A. Hernández-Ceballos, E. Brattich, and G. Cinelli

Source: https://www.hindawi.com/



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