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Ara es mostren els items 19-29 de 29

    • Low-level radon activity concentration—A metroRADON international intercomparison 

      Otáhal, Petr; Fialova, Eliska; Vosahlik, Josef; Wiedner, Hannah; Grossi, Claudia; Vargas Drechsler, Arturo; Michielsen, Nathalie; Turtiainen, Tuukka; Luca, Aurelian; Woloszczuk, Katarzyna; Beck, Thomas R. (2022-05-10)
      Article
      Accés obert
      An international comparison of continuous monitors measuring radon activity concentration was performed to validate the traceability of the European radon calibration facilities. It was carried out by comparing the secondary ...

    • Metrology for low-cost CO2 sensors applications: the case of a steady-state through-flow (SS-TF) chamber for CO2 fluxes observations 

      Curcoll Masanes, Roger; Morguí, Josep-Anton; Kamnang, Armand; Cañas, Lidia; Vargas Drechsler, Arturo; Grossi, Claudia (2022-05-09)
      Article
      Accés obert
      Soil CO2 emissions are one of the largest contributions to the global carbon cycle, and a full understanding of processes generating them and how climate change may modify them is needed and still uncertain. Thus, a dense ...

    • New metrology for radon at the environmental level 

      Röttger, Annette; Röttger, Stefan; Grossi, Claudia; Vargas Drechsler, Arturo; Curcoll Masanes, Roger; Otáhal, Petr; Hernández Ceballos, Miguel Ángel; Cinelli, Giorgia; Chambers, Scott Dudley; Barbosa, Susana Alexandra; Ioan, M. R.; Radulescu, Ileana (2021-09-23)
      Article
      Accés obert
      Radon gas is the largest source of public exposure to naturally occurring radioactivity. However, radon is also a useful tracer for understanding atmospheric processes, assessing the accuracy of chemical transport models, ...

    • Quality study of electret radon flux monitors by an “in situ” intercomparison campaign in Spain 

      Grossi, Claudia; Vargas Drechsler, Arturo; Arnold, Delia (International Energy Agency, 2011)
      Text en actes de congrés
      Accés obert
      Radon is nowadays used as a tracer for atmospheric transport model validation because of its physical and chemical characteristics. 222Rn source term characterization becomes necessary for more accurate validations into ...

    • Radon 

      Grossi, Claudia (2019-05-01)
      Capítol de llibre
      Accés obert
      Radon isotopes (222Rn, 220Rn) are noble, naturally occurring radioactive gases. They originate from the alpha decay of radium isotopes (226Ra, 224Ra), which occur in most materials in the environment, i.e. soil, rocks, raw ...

    • Radon metrology for use in climate change observation and radiation protection at the environmental level 

      Röttger, Stefan; Röttger, Annette; Grossi, Claudia; Vargas Drechsler, Arturo; Karstens, Ute; Cinelli, Giorgia; Chung, Edward; Kikaj, Dafina; Rennick, Chris; Mertes, Florian; Radulescu, Ileana (European Geosciences Union (EGU), 2022-03-10)
      Article
      Accés obert
      Radon (222Rn) gas is the largest source of public exposure to naturally occurring radioactivity and the identification of radon priority areas is required by the Council Directive 2013/59/Euratom. Radon is also used as a ...

    • Study of the daily and seasonal atmospheric CH4 mixing ratio variability in a rural Spanish region using Rn-222 tracer 

      Grossi, Claudia; Vogel, F. R.; Curcoll, Roger; Agueda Costafreda, Alba; Vargas Drechsler, Arturo; Rodó, Xavier; Morguí, Josep Anton (2018-04-26)
      Article
      Accés obert
      The ClimaDat station at Gredos (GIC3) has been continuously measuring atmospheric (dry air) mixing ratios of carbon dioxide (CO2) and methane (CH4), as well as meteorological parameters, since November 2012. In this study ...

    • Temporal and spatial variability of ground level atmospheric methane concentrations in the Ebro River Delta 

      Agueda Costafreda, Alba; Grossi, Claudia; Pastor Ferrer, Elsa; Rioja, Eva (2017-07)
      Article
      Accés restringit per política de l'editorial
      Deltas provide many worthy ecosystem services. Yet, delta basins are quite vulnerable, especially in the face of climate change, which can affect the outcome of both agriculture and biodiversity. Moreover, rice paddy ...

    • The mapping of alpha-emitting radionuclides in the environment using an unmanned aircraft system 

      Royo Chic, Pablo; Vargas Drechsler, Arturo; Guillot Colls, Tania; Sáiz Broch, David; Pichel, Jonathan; Rábago, Daniel; Duch Guillen, María Amor; Grossi, Claudia; Luchkov, Maksym; Dangendorf, Volker; Krasniqi, Faton (Multidisciplinary Digital Publishing Institute (MDPI), 2024-02-29)
      Article
      Accés obert
      The protection of first responders from radioactive contamination with alpha emitters that may result from a radiological accident is of great complexity due to the short range of alpha particles in the air of a few ...

    • The metrological traceability, performance and precision of european radon calibration facilities 

      Beck, Thomas R.; Antohe, Andrei; Cardellini, Francesco; Cucos, Alexandra; Fialova, Eliska; Grossi, Claudia; Hening, Kinga; Jensen, Jens; Kastratovic, Dejan; Krivosic, Matej; Lobner, Patrick; Vargas Drechsler, Arturo (2021-11-19)
      Article
      Accés obert
      An interlaboratory comparison for European radon calibration facilities was conducted to evaluate the establishment of a harmonized quality level for the activity concentration of radon in air and to demonstrate the ...

    • Variability of methane fluxes at the Ebro Delta due to rice field: comparison between inventories and Radon Tracer Method based results. 

      Curcoll Masanes, Roger; Morguí, Josep-Anton; Agueda Costafreda, Alba; Vargas Drechsler, Arturo; Grossi, Claudia (2023)
      Text en actes de congrés
      Accés obert
      The Ebro River Delta, in the northwestern Mediterranean basin, has an extension of 320 km2 and is mainly covered by rice fields. Rice fields are known to be one of the main sources of anthropogenic methane emissions, and ...