atmospheric physics at misu department of meteorology stockholm university
DESCRIPTION
Atmospheric Physics at MISU Department of Meteorology Stockholm University. the middle atmosphere (10-100 km). Jörg Gumbel Jonas Hedin Markus Rapp. Atmospheric Physics at MISU 2 scientists 2 guest scientists 4 Ph.D. students 1 research engeneer 1 professor emeritus. december 2004. - PowerPoint PPT PresentationTRANSCRIPT
Atmospheric Physics at MISU
Department of Meteorology Stockholm University
the middleatmosphere(10-100 km)
Jörg GumbelJonas HedinMarkus Rapp
Atmospheric Physics at MISU
2 scientists
2 guest scientists
4 Ph.D. students
1 research engeneer
1 professor emeritus
december 2004
the mesosphere
noctilucent clouds (NLC)
The role of particles in the middle atmosphere
sources • properties • interactions
The role of particles in the middle atmosphere
sources • properties • interactions
ice particles, meteoric smoke, ion clusters, other . . .
global measurements
NLC
sodium
water vapour
ground-based measurements
theory and modelling
microphysics
radiativetransfer
lidar
in situ measurements
MISU's rocket programme
Up to 100 tons of meteoric material enter the Earth’s atmosphere each day.
Up to 100 tons of meteoric material enter the Earth’s atmosphere each day.
What happens then ???
The fate of meteoric material in the mesosphere
meteoroids
The fate of meteoric material in the mesosphere
meteoroids
The fate of meteoric material in the mesosphere
meteoroids
The fate of meteoric material in the mesosphere
meteoroids
Why are we interested ?
Meteoric smoke particles may be major players in the mesosphere
• condensation nuclei for ice (NLC, PMSE, ...)
• metal budget
• charge budget
• heterogeneous chemistry
• . . .
But:
Nobody has ever investigated these particles.
But:
Nobody has ever investigated these particles.
In fact, there has been no direct proof of their existence...
MAGICMesospheric Aerosol –Genesis, Interaction, and Composition
MAGICMesospheric Aerosol –Genesis, Interaction, and Composition
Sample meteoric smoke particles and take them to the laboratory !
• 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
• 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
The aerodynamics of particle impact:
MAGIC
payload
The aerodynamics of particle impact:
MAGIC sampling surface
payload
The first MAGIC launch:
Esrange, Sweden, January 2005
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
The first MAGIC launch:
Esrange, Sweden, January 2005
Payload Recovery
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)
support structure 3 nm TEM grid
nanometer particles
aggregates sub-nanometer particles ?
Stay tuned for more . . .
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.