Understanding of Polar Mesosphere Summer Echoes: Where do we Stand?

Details Understanding of Polar Mesosphere Summer Echoes: Where do we Stand? Understanding of Polar Mesosphere Summer Echoes: Where do we Stand?

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa42b..05r&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA42B-05

Physics

0305 Aerosols And Particles (0345, 4801), 0340 Middle Atmosphere: Composition And Chemistry, 0345 Pollution: Urban And Regional (0305), 2439 Ionospheric Irregularities, 6929 Ionospheric Physics (2409)

Scientific paper

We shortly review our current physical understanding of the physics of polar mesosphere summer echoes (PMSE) in the scope of our recently updated theory of reduced electron diffusivity in the presence of charged ice particles. Based on the available observational data base from both ground based and rocket borne observations we critically assess our physical understanding of PMSE properties like (among others) observed seasonal variation, signal strength, spectral width, aspect sensitivity, relation to the occurrence of noctilucent clouds, relation to the occurrence of electron biteouts, electric fields, and the morphology of mesospheric neutral air turbulence. Finally, we identify remaining open questions and discuss the need for future investigations.

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