2011 Workshop: High Speed Stream Driving of Geospace

• Joint CEDAR-GEM Workshop: 30 June 2011, Time: Session 1 1330-1530 UT, Session 2 1600-1800 UT

• Conveners: Janet Kozyra <jukozyra@umich.edu> and Richard Thorne <rmt@atmos.ucla.edu>,

Invitation to Participate:Please come and participate in a multi-disciplinary discussion of the response of geospace and the atmosphere to high speed streams, both in general and as observed during the recent unusual solar minimum. All are welcome!

• Speakers (listed below) have been invited to introduce new findings, the questions they raise, and possible consequences in other geospace regions.

• We are very interested in information about additional features in geospace during high-speed streams. Please let the conveners know if you have 1-2 slides to present that raise new issues.

• We are hoping to take advantage of the unique environment that the joint CEDAR-GEM meeting provides to identify the signatures of related processes in different regions.

Please come and add your expertise to the mix in the joint workshop. Workshop Description:This workshop addresses the impacts of high speed streams on the development of auroral activity, radiation belt enhancements, inner magnetosphere-subauroral response, and atmospheric perturbations. A particular sub-focus is to explore the changes in the geospace-atmosphere response in the recent unusual solar minimum interval due to the combination of strong and long-lasting high speed streams, the lowest average IMF and solar wind densities ever recorded at 1 AU, and the lowest solar EUV fluxes in three solar cycles, placing system responses into a backdrop of tenuous ionospheric densities and low conductivities.

Revised Agenda

30 June 2011, Session 1

Solar Wind - Geospace Coupling during HSS

• 1330 Robert McPherron -- Solar wind - magnetosphere coupling during high speed streams, in the recent solar minimum, and in the preceding solar minimum

• 1350   Delores Knipp - Poynting Flux into ionosphere as a function of solar wind drivers

• 1400   Tzu-Wei Fang - Ionospheric response to the 13.5 day recurrent geomagnetic activity in 1974 (previous solar cycle)                   

• 1410 Raluca Ilie - Periodicities in the solar wind and magnetosphere during HSS

Radiation Belts and Ring Current during HSS

• 1430 Joe Borovsky - Radiation belts during weak high speed streams in 2006-2007

• 1450 Wen Li - Chorus waves seen on THEMIS during high speed streams

• 1510 Vania Jordanova - Ring current dynamics during high speed streams

1530-1600 BREAK

30 June 2011, Session 2

Geospace - Atmosphere during HSS

• 1600 Yue Deng - Joule heating and 9-day periodicity of HSS

• 1620 Jeff Thayer - CIR/HSS impact on the thermosphere

• 1640 Olga Verkhoglyadova - Ionospheric TEC and thermospheric emission dynamics during HSS

Atmosphere-Ionosphere Responses to Solar Minimum & Consequences

• 1700 Sharon Vadas - Differences in propagation and dissipation of gravity waves during SC24

• 1720 John Emmert - Causes and consequences of low thermospheric densities this minimum

• 1740 Stan Solomon: Upper atmosphere and ionosphere at Solar Minimum

1800 END OF SESSION