A stratospheric balloon experiment to test the Huygens atmospheric structure instrument (HASI)

Fulchignoni, M.; Aboudan, A.; Angrilli, Francesco; Antonello, Marco; Bastianello, S.; Bettanini, C.; Bianchini, G.; Colombatti, Giacomo; Ferri, F.; Flamini, Enrico; Gaborit, V.; Ghafoor, Naureen; Hathi, B.; Harri, A. M.; Lehto, A.; Stoppato, P. F. Lion; Patel, Manish R.; Zarnecki, J. C.

doi:10.1016/j.pss.2004.02.009

Cited by 18 publications

(4 citation statements)

References 3 publications

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“…Titan is known to possess a characteristic halo of hydrogen at high altitude composed of hydrogen liberated mainly from atmospheric CH 4 . 60 We also have to take into account the fact that the temperature at high altitude (4500 km) in the atmosphere is higher than 140 K, 61 which is not compatible with a cryogenic matrix experiment.…”

Section: Discussionmentioning

confidence: 99%

Infrared study of matrix-isolated ethyl cyanide: simulation of the photochemistry in the atmosphere of Titan

Toumi

Piétri

Couturier-Tamburelli

2015

Phys. Chem. Chem. Phys.

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Low-temperature Ar matrix isolation has been carried out to investigate the infrared spectrum of ethyl cyanide (CH3CH2CN), a molecule present in the atmosphere of Titan. The λ > 120 nm and λ > 230 nm photolysis reactions of ethyl cyanide in an Ar matrix were also performed in order to compare the behaviour of this compound when it is submitted to high and low energetic radiations. These different wavelengths have been used with the aim to reproduce the radiation reaching the various parts of the atmosphere. Several photoproducts have been identified during photolysis such as vinyl cyanide (CH2[double bond, length as m-dash]CHCN), cyanoacetylene (HC3N), and ethylene/hydrogen cyanide (C2H4/HCN), ethylene/hydrogen isocyanide (C2H4/HNC), acetylene/hydrogen cyanide (C2H2/HCN), acetylene/hydrogen isocyanide (C2H2/HNC), and acetylene:methylenimine (C2H2:HNCH2) complexes. Ethyl isocyanide (CH3CH2NC) and a ketenimine form (CH3CH[double bond, length as m-dash]C[double bond, length as m-dash]NH) have been identified as well. Photoproduct identification and spectral assignments were done using previous studies and density functional theory (DFT) calculations with the B3LYP/cc-pVTZ basis set.

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Section: Discussionmentioning

confidence: 99%

Infrared study of matrix-isolated ethyl cyanide: simulation of the photochemistry in the atmosphere of Titan

Toumi

Piétri

Couturier-Tamburelli

2015

Phys. Chem. Chem. Phys.

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“…2 shows, however, the atmospheric conductivity profiles are very different between Earth and Mars, with the surface atmospheric conductivity at Mars comparable with that of the terrestrial stratosphere. Although space instrumentation can be tested using stratospheric balloons (Fulchignoni et al 2004), use at this altitude would not be practical, not least as there would be no prospect of obtaining a ground connection. Since the Earth's atmospheric conductivity 2 at sea-level is about 100 times smaller than that near the surface on Mars, the antenna-atmosphere coupling will generate a greater sheath resistance of up to 10 15 , which will cause the signal to be almost fully attenuated and the electrode will not be able to maintain itself at the floating local potential because of the small bias current flow to the input amplifier.…”

Section: Microares Tests In the Terrestrial Atmospherementioning

confidence: 99%

Applications of Electrified Dust and Dust Devil Electrodynamics to Martian Atmospheric Electricity

et al. 2016

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Atmospheric transport and suspension of dust frequently brings electrification, which may be substantial. Electric fields of 10 kV m −1 to 100 kV m −1 have been observed at the surface beneath suspended dust in the terrestrial atmosphere, and some electrification has been observed to persist in dust at levels to 5 km, as well as in volcanic plumes. The interaction between individual particles which causes the electrification is incompletely understood, and multiple processes are thought to be acting. A variation in particle charge with particle size, and the effect of gravitational separation explains to, some extent, the charge structures observed in terrestrial dust storms. More extensive flow-based modelling demonstrates that bulk electric fields in excess of 10 kV m −1 can be obtained rapidly (in less than 10 s) from rotating dust systems (dust devils) and that terrestrial breakdown fields can be obtained. Modelled profiles of electrical conductivity in the Martian atmosphere suggest the possibility of dust electrification, and dust devils have been suggested as a mechanism of charge separation able to maintain current flow between one region of the atmosphere and another, through a global circuit. Fundamental new understanding of Martian atmospheric electricity will result from the ExoMars mission, which carries the DREAMS (Dust characterization, Risk Assessment, and Environment Analyser on the Martian Surface)-B R.G. Harrison

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“…To date, the device is in the early stages of testing; the different application cases will be investigated in the next months. Functional and operational tests will be consequently performed by the research team, which has an excellent knowledge of drone flights [7], stratospheric balloons [8] and the assessment of air [9] and light pollution [10].…”

Section: Discussionmentioning

confidence: 99%

The ATEMO device: a compact solution for earth monitoring

Toson

2023

Materials Research Proceedings

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Abstract. In today's context, where climate change is increasingly topical and of global interest, the ATEMO (Atmospheric Technologies for Earth Monitoring and Observation) project proposes a multi-purpose solution, which can be integrated on board drones or stratospheric balloons, to provide a framework for environmental assessment in areas of interest. Specifically, ATEMO, equipped with a set of cameras and sensors, aims to enrich data on air pollution, light pollution and vegetation health with high spatial resolution and rapid deployment.

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A stratospheric balloon experiment to test the Huygens atmospheric structure instrument (HASI)

Cited by 18 publications

References 3 publications

Infrared study of matrix-isolated ethyl cyanide: simulation of the photochemistry in the atmosphere of Titan

Infrared study of matrix-isolated ethyl cyanide: simulation of the photochemistry in the atmosphere of Titan

Applications of Electrified Dust and Dust Devil Electrodynamics to Martian Atmospheric Electricity

The ATEMO device: a compact solution for earth monitoring

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