CEDAR email: EGU 2016: new session on cosmic dust impacts in planetary atmospheres

John Plane J.M.C.Plane at leeds.ac.uk
Thu Dec 3 05:22:13 MST 2015

Dear Colleagues

We would like to draw your attention to the following new session that is being convened at the next EGU General Assembly in Vienna:

EGU General Assembly 17-22 April 2016


Impacts of cosmic dust in the terrestrial and other planetary atmospheres (co-organized)

Convenor: John Plane (University of Leeds)    Co-convenors:  Jorge Chau (University of Rostock), Zoltan Sternovsky (University of Colorado)

The amount of cosmic dust which enters the Earth's atmosphere is highly uncertain, with recent estimates varying by up to 2 orders of magnitude. The first aim of this session will be to explore the different techniques that are used to measure the cosmic dust influx, such as space-borne dust detectors, meteor radars, lidar measurements of metal atoms in the upper mesosphere, optical extinction of meteoric smoke particles in the mesosphere and stratosphere, refractory cores in stratospheric sulphate particles, and the deposition of cosmic spherules and meteoric smoke in ice cores.
The second aim will be to examine the impacts of meteoric ablation in the atmosphere, which include: sporadic E layers in the lower thermosphere; layers of metal atoms, airglow emissions, and noctilucent clouds in the upper mesosphere; the removal of acids and reactive radicals in the mesosphere and stratosphere; and the nucleation and freezing properties of polar stratospheric clouds in the lower stratosphere.

Observations of the impact of cosmic dust in the atmospheres of other solar system bodies provide important contrasts with the Earth, and also help to constrain astronomical models of the evolution of dust produced by comets and asteroids. Comet Siding Spring made a close fly-by of Mars in October 2014, providing a unique opportunity for the MAVEN spacecraft to observe the "dusting" of a planetary atmosphere. Cosmic dust impacts have also been observed in the atmospheres of Venus and Titan.

Papers are solicited which deal with all aspects of the atmospheric impacts of cosmic dust, including observations, relevant laboratory studies and modelling.

The deadline for submitting an abstract is 13th Jan 2016.  Abstracts can be submitted via the following link: http://meetingorganizer.copernicus.org/egu2016/sessionprogramme

Information on abstract submission: http://egu2016.eu/abstract_management/how_to_submit_an_abstract.html

Hope to see you next Spring in Vienna!

John Plane, Jorge Chau and Zoltan Sternovsky

Professor John Plane
School of Chemistry
University of Leeds
Leeds LS2 9JT
Tel. (44) 113 3438044

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