Measurements of aerosols and charged particles on the BEXUS18 stratospheric balloon
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Published:2019-06-06
Issue:3
Volume:37
Page:389-403
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ISSN:1432-0576
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Container-title:Annales Geophysicae
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language:en
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Short-container-title:Ann. Geophys.
Author:
Brattich ErikaORCID, Serrano Castillo Encarnación, Giulietti Fabrizio, Renard Jean-Baptiste, Tripathi Sachi N., Ghosh Kunal, Berthet GwenaelORCID, Vignelles Damien, Tositti LauraORCID
Abstract
Abstract. This paper describes the aerosol measurement setup and
results obtained during the BEXUS18 (Balloon-borne Experiments for University Students) stratospheric balloon within the
A5-Unibo (Advanced Atmospheric Aerosol Acquisition and Analysis)
experiment performed on 10 October 2014 in northern Sweden (Kiruna).
The experimental setup was designed and developed by the University of
Bologna with the aim of collecting and analyzing vertical profiles of
atmospheric ions and particles together with atmospheric parameters
(temperature, relative humidity, and pressure) all along the stratospheric
ascent of the BEXUS18 stratospheric balloon. Particle size distributions
were measured with the MeteoModem Light Optical Aerosol Counter (LOAC) and
air ion density was measured with a set of two commercial and portable ion
counters. Though the experimental setup was based upon relatively low-cost
and light-weight sensors, vertical profiles of all the parameters up to an
altitude of about 27 km were successfully collected. The results obtained
are useful for elucidating the relationships between aerosols and charged
particles between ground level and the stratosphere, with great potential in
collecting and adding useful information in this field, also in the
stratosphere where such measurements are rare. In particular, the equipment
detected coherent vertical profiles for particles and ions, with a
particularly strong correlation between negative ions and fine particles,
possibly resulting from proposed associations between cosmic rays and ions
as previously suggested. In addition, the detection of charged aerosols in
the stratosphere is in agreement with the results obtained by a previous
flight and with simulations conducted with a stratospheric ion–aerosol
model. However, further measurements under stratospheric balloon flights
equipped with a similar setup are needed to reach general conclusions about
such important issues.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
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