@Article{PaciniUsoMurEchEva:2015:SiSuSt,
author = "Pacini, A. A. and Usokin, I. G. and Mursula, K. and Echer,
Ezequiel and Evangelista, H.",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{University of Oulu} and {University of Oulu} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade do
Estado do Rio de Janeiro (UERJ)}",
title = "Signature of a sudden stratospheric warming in the near-ground 7Be
flux",
journal = "Atmospheric Environment",
year = "2015",
volume = "113",
pages = "27--31",
month = "July",
keywords = "Cosmogenic isotopes, Stratospheric-tropospheric coupling, Sudden
stratospheric warming.",
abstract = "We present here an evidence that cosmogenic 7Be isotopes produced
in the lower stratosphere were measured in near-ground air at Rio
de Janeiro, Brazil, after the southern hemispheric Sudden
Stratospheric Warming (SSW) of 2002. The analysis presented here
is based on a comparison of 7Be data measured around Angra Nuclear
Power Station (23°S 44°W) during the last three decades and a
model estimate of the near-ground air 7Be concentration using the
CRAC:7Be model of cosmogenic production together with a simplified
model for atmospheric 7Be deposition that assimilates the regional
precipitation data. Our results indicate that an anomalous
stratosphere-troposphere coupling associated to the unique SSW of
2002 allowed stratospheric aerosols carrying 7Be to reach the
ground level very quickly. This methodology points to an important
use of 7Be as a quantitative tracer for stratospheric influence on
near-ground air patterns.",
doi = "10.1016/j.atmosenv.2015.04.065",
url = "http://dx.doi.org/10.1016/j.atmosenv.2015.04.065",
issn = "1352-2310",
language = "en",
targetfile = "pacini_signature.pdf",
urlaccessdate = "27 abr. 2024"
}