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Atmospheric Physics at MISU
Department of Meteorology Stockholm University
the middleatmosphere(10-100 km)
Jörg GumbelJonas HedinMarkus Rapp
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Atmospheric Physics at MISU
2 scientists
2 guest scientists
4 Ph.D. students
1 research engeneer
1 professor emeritus
december 2004
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the mesosphere
noctilucent clouds (NLC)
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The role of particles in the middle atmosphere
sources • properties • interactions
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The role of particles in the middle atmosphere
sources • properties • interactions
ice particles, meteoric smoke, ion clusters, other . . .
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global measurements
NLC
sodium
water vapour
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ground-based measurements
theory and modelling
microphysics
radiativetransfer
lidar
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in situ measurements
MISU's rocket programme
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Up to 100 tons of meteoric material enter the Earth’s atmosphere each day.
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Up to 100 tons of meteoric material enter the Earth’s atmosphere each day.
What happens then ???
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The fate of meteoric material in the mesosphere
meteoroids
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The fate of meteoric material in the mesosphere
meteoroids
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The fate of meteoric material in the mesosphere
meteoroids
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The fate of meteoric material in the mesosphere
meteoroids
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Why are we interested ?
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Meteoric smoke particles may be major players in the mesosphere
• condensation nuclei for ice (NLC, PMSE, ...)
• metal budget
• charge budget
• heterogeneous chemistry
• . . .
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But:
Nobody has ever investigated these particles.
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But:
Nobody has ever investigated these particles.
In fact, there has been no direct proof of their existence...
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MAGICMesospheric Aerosol –Genesis, Interaction, and Composition
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MAGICMesospheric Aerosol –Genesis, Interaction, and Composition
Sample meteoric smoke particles and take them to the laboratory !
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• Do smoke particles of cosmic origin exist in the mesosphere?
• What is their number density and altitude distribution?
• What is their size?
• What is their composition?
MAGIC
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• Do smoke particles of cosmic origin exist in the mesosphere?
• What is their number density and altitude distribution?
• What is their size?
• What is their composition?
MAGIC
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The aerodynamics of particle impact:
MAGIC
payload
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The aerodynamics of particle impact:
MAGIC sampling surface
payload
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The first MAGIC launch:
Esrange, Sweden, January 2005
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The first MAGIC launch:
Esrange, Sweden, January 2005
• MAGIC smoke collectors
• hygrometer (optical water measurements)
• charged particle detectors
• meteorological rockets (chaff)
• balloon sounding
• RMR lidar
• MST radar, meteor radar, EISCAT
• ground-based optical and geomagnetic monitoring
• the Odin satellite
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The first MAGIC launch:
Esrange, Sweden, January 2005
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Payload Recovery
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Analysis:
EOL 2200FS 200-kV field emission scanning transmission electron microscope (TEM)
• high-angle annular dark field (HAADF) imaging• energy dispersive x-ray analysis (EDS)
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support structure 3 nm TEM grid
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nanometer particles
aggregates sub-nanometer particles ?
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Stay tuned for more . . .
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Nordic Research Board
Department of MeteorologyStockholm University
A Graduate School and Workshop on
Middle Atmospheric AerosolsStockholm, Sweden, October 2-8, 2005
Course Topics:
• Aeronomy of the middle atmosphere • Meteoric material in the middle atmosphere • Ice particles in the polar summer mesosphere • The stratospheric background aerosol • Ice particles in the stratosphere • Particle properties and interactions • Measurement techniques
Teachers:• Jörg Gumbel, Sweden • Niels Larsen, Denmark • Ingrid Mann, Germany • Asta Pellenin-Wannberg, Sweden • Jan Pettersson, Sweden • John Plane, U.K. • Markus Rapp, Germany • Douglas ReVelle, USA • David Siskind, USA • Esa Turunen, Finland • Tomas Waldemarsson, USA
http://www.misu.su.se
The registration deadline is June 5, 2005. There is no registration fee for this course. Support (travel, accomodation) is available from the NorFA network.