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Atmospheric Physics at MISU Department of Meteorology Stockholm University the middle atmosphere (10-100 km) Jörg Gumbel Jonas Hedin Markus Rapp.

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Presentation on theme: "Atmospheric Physics at MISU Department of Meteorology Stockholm University the middle atmosphere (10-100 km) Jörg Gumbel Jonas Hedin Markus Rapp."— Presentation transcript:

1 Atmospheric Physics at MISU Department of Meteorology Stockholm University the middle atmosphere ( km) Jörg Gumbel Jonas Hedin Markus Rapp

2 Atmospheric Physics at MISU 2 scientists 2 guest scientists 4 Ph.D. students 1 research engeneer 1 professor emeritus december 2004

3

4 the mesosphere noctilucent clouds (NLC)

5 The role of particles in the middle atmosphere sources properties interactions

6 The role of particles in the middle atmosphere sources properties interactions ice particles, meteoric smoke, ion clusters, other...

7

8 global measurements NLC sodium water vapour

9 ground-based measurements theory and modelling microphysics radiative transfer lidar

10 in situ measurements MISU's rocket programme

11

12 Up to 100 tons of meteoric material enter the Earth’s atmosphere each day.

13 What happens then ???

14 The fate of meteoric material in the mesosphere meteoroids

15 The fate of meteoric material in the mesosphere meteoroids

16 The fate of meteoric material in the mesosphere meteoroids

17 The fate of meteoric material in the mesosphere meteoroids

18 Why are we interested ?

19 Meteoric smoke particles may be major players in the mesosphere condensation nuclei for ice (NLC, PMSE,...) metal budget charge budget heterogeneous chemistry...

20 But: Nobody has ever investigated these particles.

21 But: Nobody has ever investigated these particles. In fact, there has been no direct proof of their existence...

22 MAGIC Mesospheric Aerosol – Genesis, Interaction, and Composition

23 MAGIC Mesospheric Aerosol – Genesis, Interaction, and Composition Sample meteoric smoke particles and take them to the laboratory !

24 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

25 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

26 The aerodynamics of particle impact: MAGIC payload

27 The aerodynamics of particle impact: MAGIC sampling surface payload

28 The first MAGIC launch: Esrange, Sweden, January 2005

29 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

30 The first MAGIC launch: Esrange, Sweden, January 2005

31

32 Payload Recovery

33 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)

34 support structure 3 nm TEM grid

35 nanometer particles aggregatessub-nanometer particles ?

36 Stay tuned for more...

37 Nordic Research Board Department of Meteorology Stockholm University A Graduate School and Workshop on Middle Atmospheric Aerosols Stockholm, 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 The registration deadline is June 5, There is no registration fee for this course. Support (travel, accomodation) is available from the NorFA network.


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