An Attempt To Identify Stratospheretroposphere
Transport Of Ozone On The Basis Of
Beryllium (7Be) Activity Concentration
Author(s)
E. Krajny, L. Osrodka, M. Wojtylak, M. Pajek & B. Michalik
Abstract
The aim of this study was to identify a situation of stratospheric to tropospheric
air mass transport (STT), and then attempt to answer the question whether
beryllium (7Be) can be a good marker of stratospheric ozone (O3) origin in
the surface boundary layer of the atmosphere (SL) and its role in the tropospheric
ozone budget. The sets of data covering the yearly period are examined such as:
the daily activity concentration of 7Be and lead (210Pb), the hourly concentration
of ground-level ozone O3 and the meteorological parameters measured in SL in a
meteorological station located in the town of Raciborz in southern Poland. The
data obtained had undergone statistical and Fourier analysis. The data obtained
had undergone Fourier analysis in order to eliminate the periodicity associated
with, inter alia, the annual variability of solar radiation incoming to the Earth’s
surface. Then, based on statistical analysis potential days in which very likely
was the occurrence of the so-called phenomenon \“stratospheric intrusion” (SI)
were identified. The selected periods were then analysed in terms of synoptic
assessment of the impact of meteorological conditions on levels of 7Be and O3.
For the selected case a detailed analysis was carried out based on the surface and
upper air observations, satellite remote sensing, profile data and ground-level
ozone. The use of trace methods based on the identification of concentrations of
naturally occurring radionuclides as 7Be and 210Pb in SL of the atmosphere is
complementary to the meteorological analysis for the identification of vertical
inflow of air masses rich in ozone from stratosphere to troposphere.
Keywords
beryllium (7Be), ground-level ozone (O3), meteorology, surfacelayer, satellite remote sensing, stratospheric-tropospheric transport (STT),stratospheric intrusion (SI).
Related Book
Other papers in this volume
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