Journal ArticleDOI
Atmospheric chemistry of meteoric metals.
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This article is published in Chemical Reviews.The article was published on 2003-10-31. It has received 331 citations till now. The article focuses on the topics: Atmospheric chemistry.read more
Citations
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Gas-phase catalysis by atomic and cluster metal ions: the ultimate single-site catalysts.
Diethard K. Bohme,Helmut Schwarz +1 more
TL;DR: This Review describes how transfer of oxygen atoms, bond activation, and coupling of fragments can be mediated by atomic or cluster metal ions, and improves the understanding of the intrinsic operation of a practical catalyst at a strictly molecular level.
Journal ArticleDOI
Modeling the microphysics of mesospheric ice particles: Assessment of current capabilities and basic sensitivities
Markus Rapp,Gary E. Thomas +1 more
TL;DR: In this article, the effect of variations of the atmospheric forcing variables like temperature, humidity, and turbulent transport is assessed using the community aerosol and radiation model for atmospheres (CARMA), and simulated ice particle size distributions are analyzed applying Mie scattering calculations.
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Dissociative Recombination of Molecular Ions
Mats Larsson,Ann E. Orel +1 more
TL;DR: In this paper, the H2+molecule, Diatomic hydride ions, and the H3+ molecule have been studied using experimental methods and theoretical methods.
Journal ArticleDOI
A chemical model of meteoric ablation
TL;DR: In this paper, a new Chemical Ablation Model (CAMOD) is described which treats the physics and chemistry of ablation, by including the following processes: sputtering by inelastic collisions with air molecules before the meteoroid melts; evaporation of atoms and oxides from the molten particle; diffusion-controlled migration of the volatile constituents (Na and K) through the molten particles; and impact ionization of the ablated fragments by hyperthermal collisions with the air molecules.
Journal ArticleDOI
Cosmic dust in the earth's atmosphere
TL;DR: The magnitude of the cosmic dust input into the earth's atmosphere, and the resulting impacts from around 100 km to theearth's surface, is discussed, which means that vertical transport in the middle atmosphere must be considerably faster than generally believed.
References
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A direct measurement of the terrestrial mass accretion rate of cosmic dust.
S. G. Love,Donald E. Brownlee +1 more
TL;DR: The mass of extraterrestrial material accreted by the Earth as submillimeter particles has not previously been measured with a single direct and precise technique, but this mass input is comparable with or greater than the average contribution from extraterrestrial bodies in the 1-centimeter to 10-kilometer size range.
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Meteor Phenomena and Bodies
Z. Ceplecha,Jiří Borovička,W. Graham Elford,Douglas O. ReVelle,R. L. Hawkes,Vladimír Porubčan,Miloš Šimek +6 more
TL;DR: Theoretical models of meteoroid interaction with the Earth's atmosphere are given and applied to observational data as discussed by the authors, including radar observations, spectroscopic observations, experiments with artificial meteors and different types of meteor sounds.
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Smoke and Dust Particles of Meteoric Origin in the Mesosphere and Stratosphere
TL;DR: In this paper, a height profile of ablated mass from meteors is calculated, assuming an incoming mass of 10 to the -16th g/sq cm/s (44 metric tons per day) and the velocity distribution of Southworth and Sekanina, which has a mean of 14.5 km/s.
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Effect of iron supply on Southern Ocean CO2 uptake and implications for glacial atmospheric CO2
TL;DR: Data are reported from a whole-ecosystem test of the iron-limitation hypothesis in the Southern Ocean, which show that surface uptake of atmospheric CO 2 and uptake ratios of silica to carbon by phytoplankton were strongly influenced by nanomolar increases of iron concentration.
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First detection of charged dust particles in the Earth's mesosphere
TL;DR: In this paper, two dust probes have been launched in 1994 from Andoya Rocket Range and two payloads were used to detect primary currents due to impacts of charged dust and also to detect secondary plasma production during dust impacts.