The aerodynamics of the MAGIC meteoric smoke sampler

Hedin, Jonas; Gumbel, J.; Waldemarsson, T.; Giovane, F.

doi:10.1016/j.asr.2007.06.046

Cited by 8 publications

(6 citation statements)

References 23 publications

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“…In addition, the interpretation of smoke observations will benefit from knowledge of smoke composition. For example, rocket in situ smoke observations require knowledge of smoke composition to correctly interpret the signals measured from charged particles (e.g., Hedin et al, ; Rapp et al, ).…”

Section: Introductionmentioning

confidence: 99%

Constraints on Meteoric Smoke Composition and Meteoric Influx Using SOFIE Observations With Models

et al. 2017

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The composition of meteoric smoke particles in the mesosphere is constrained using measurements from the Solar Occultation For Ice Experiment (SOFIE) in conjunction with models. Comparing the multiwavelength observations with models suggests smoke compositions of magnetite, wüstite, magnesiowüstite, or iron‐rich olivine. Smoke compositions of pure pyroxene, hematite, iron‐poor olivine, magnesium silicate, and silica are excluded, although this may be because these materials have weak signatures at the SOFIE wavelengths. Information concerning smoke composition allows the SOFIE extinction measurements to be converted to smoke volume density. Comparing the observed volume density with model results for varying meteoric influx (MI) provides constraints on the ablated fraction of incoming meteoric material. The results indicate a global ablated MI of 3.3 ± 1.9 t d−1, which represents only iron, magnesium, and possibly silica, given the smoke compositions indicated here. Considering the optics and iron content of individual smoke compositions gives an ablated Fe influx of 1.8 ± 0.9 t d−1. Finally, the global total meteoric influx (ablated plus surviving) is estimated to be 30 ± 18 t d−1, when considering the present results and a recent description of the speciation of meteoric material.

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Section: Introductionmentioning

confidence: 99%

Constraints on Meteoric Smoke Composition and Meteoric Influx Using SOFIE Observations With Models

et al. 2017

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“…The small dust acts as nucleation centres so the ice particles form faster than the homogenous condensation from gas phase does. [9]). [7] While models [5,6] assume that initial condensates of 0.2 nm size form in the meteor plumes, there is an uncertainty about the smallest size of the dust particles.…”

Section: Ionosphere and Its Dust Componentsmentioning

confidence: 99%

“…ref. [9]). The larger among the icy dust particles are observed in noctilucent clouds, [10,11] with optical images, [12,13] with lidar, [14] and optically from satellites.…”

Section: Ionosphere and Its Dust Componentsmentioning

confidence: 99%

Radar studies of ionospheric dusty plasma phenomena

Mann

Gunnarsdottir

Häggström

et al. 2019

Contributions to Plasma Physics

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We discuss the influence of charged dust on radar observations in the Earth ionosphere. This region in the upper Earth atmosphere can be described as a partially ionized, low-temperature plasma. Plasma parameters vary by orders of magnitude spatially and in time. Dust particles influence the charge balance, in some cases dusty plasma condition is met. The polar mesospheric echoes are an example of dust plasma interactions observed with radar. The mesosphere is a region where atmospheric temperature decreases with altitude and can reach frost point temperature.The formation of the polar mesospheric radar echoes involves neutral atmosphere dynamics, which is latitude dependent and it involves charged dust particles, especially icy dust that forms in the polar summer mesosphere. Charged dust can also influence incoherent scatter that results from electromagnetic waves scattering off electrons, where the electrons are coupled to other charged components. Observers rarely report charged dust signatures in the incoherent scatter spectra; we show that there is a good chance for doing so with improved observations. The incoherent scatter can possibly also be used to estimate the amount of charged dust in the direct vicinity of a meteor, as we show based on the order of magnitude considerations. This prospect of new observational results makes theoretical investigations of radio-wave scattering in the presence of charged dust with size distributions worthwhile.

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“…On the other hand, the microphysical properties of meteoric-smoke particle are still poorly understood. This lack of knowledge is due to the complications involved with in-situ measurements at mesospheric altitudes that can only be reached by sounding rockets (Havnes et al, 1996;Goldberg et al, 2001;Smiley et al, 2002;Rapp et al, 2005;Lynch et al, 2005;Hedin et al, 2007b). Furthermore, the detection of nanometer sized particles is constrained by the shock wave in front of the rocket which may prevent small particles from reaching the detector (Hedin et al, 2007a) and by contamination from the rocket itself.…”

Section: Introductionmentioning

confidence: 99%

A novel rocket-based in-situ collection technique for mesospheric and stratospheric aerosol particles

Reid¹,

Achtert²,

Ivchenko³

et al. 2012

Preprint

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A technique for collecting aerosol particles between altitudes of 85 and 17 km is described. Collection probes are ejected from a sounding rocket allowing for multi-point measurements. Each probe is equipped with 110 collection samples that are 3 mm in diameter. The collection samples are one of three types: standard transmission electron microscopy carbon grids, glass fibre filter paper or silicone gel. Each collection sample is exposed over a 50 m to 5 km height range with a total of 45 separate ranges. Post-flight electron microscopy gives size-resolved information on particle number, shape and elemental composition. Each collection probe is equipped with a suite of sensors to capture the probe's status during the fall. Parachute recovery systems along with GPS-based localization ensure that each probe can be located and recovered for post-flight analysis

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The aerodynamics of the MAGIC meteoric smoke sampler

Cited by 8 publications

References 23 publications

Constraints on Meteoric Smoke Composition and Meteoric Influx Using SOFIE Observations With Models

Constraints on Meteoric Smoke Composition and Meteoric Influx Using SOFIE Observations With Models

Radar studies of ionospheric dusty plasma phenomena

A novel rocket-based in-situ collection technique for mesospheric and stratospheric aerosol particles

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