Second meeting:       20-24 August 2018

Participants: Jorge L. Chau, Alexander Kozlovsky, Renata Lukianova, Meers Oppenheim, Juha Vierinen, Ryan Volz, Jared Klemm (young scientist)

Program:

Mrements from specular meteor radars, not coming from specular meteor echoes
Meers: The nonspecular meteor trails: Observation and Theory
Alexander:  Decay of non-underdense trails
Koki: Dependence of diffusion time on NLC (charged-ice particles) or magnetic activity (work of my colleague Fazlul Laskar)
Alexander:
– PMSE detected by SKYiMET: statistics and cases
– Signatures of pulsating (2-Hz) aurora in the SGO meteor radar data

Dynamics from traditional specular meteor radars
Jared:  Temperature on one day for SGO during Geminids 2017, specifically selecting only underdense echoes and using those for the temperature calculation.
Koki: MLT tidal studies using multiple ground-based SMRs (work of my colleague Maosheng He)
Ryan:  Wind field estimation from MR measurements using Gaussian processes
Koki: Wind field inversion
Juha: Structure function inversion
Koki:  Preliminary results of novel SMR using MIMO (with Juha, et al.)
Renata: Recognition of meteor showers from the heights of ionization trails

Evolution of meteor trails
Meers:
– The physics of plasma formation around a meteor
– The evolution of meteor trails
– Electric fields and diffusion of a meteor trail
Jared: Effects of chemistry on decay time, especially for overdense echoes