Skip to main content
main-content
Top

Hint

Swipe to navigate through the articles of this issue

01-06-2015 | Original Article | Issue 12/2015

Environmental Earth Sciences 12/2015

Seasonal variation of night-time accumulated Rn-222 in central Italy

Journal:
Environmental Earth Sciences > Issue 12/2015
Authors:
Giovanni Pitari, Natalia De Luca, Eleonora Coppari, Piero Di Carlo, Glauco Di Genova

Abstract

Observations of Radon-222 taken in the central Italy site of L’Aquila since 2004 have been analysed with simultaneously collected meteorological data and other atmospheric trace gas concentrations to better understand the physical drivers of the seasonal variability of Radon-222 in the atmospheric boundary layer and to assess the role of different mechanisms controlling the tracer abundance immediately above the Earth surface. Dynamical removal due to turbulent convective motions that are highly dependent on atmospheric meteorological conditions is found to be the dominant controlling process. The observed radon concentrations are negatively correlated to horizontal wind speed, which is an indirect measure of atmospheric vertical motions (through mass continuity), and to mixing ratios of surface ozone. In a site where the impact of local photochemical production is limited, surface ozone is another atmospheric trace species whose abundance is largely controlled by horizontal advection and vertical mixing, the latter with a main source region located in the free troposphere instead of at the surface. Monthly averaged day–night changes of radon concentration are found to be clearly anti-correlated to surface temperature (T) (correlation coefficient R = −0.96) because the latter acts as a driver of boundary layer turbulence and is in turn correlated to the magnitude of the radon soil flux. The rate of increase of the radon concentration during meteorologically stable nights can be used to infer to the magnitude of the monthly averaged radon soil flux (Φ) and its statistical uncertainty. A positive/negative correlation of Φ is found with T and soil moisture retention (W), respectively (R T  = 0.93 and R W  = −0.90).

Please log in to get access to this content

To get access to this content you need the following product:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Literature
About this article

Other articles of this Issue 12/2015

Environmental Earth Sciences 12/2015 Go to the issue

International Viewpoint and News

International year of soils is underway