Session 1: TimingTime: 10:30 am – 12:15 pm on June 25 (Wed) Room: Interlaken

Science Questions: What is the time sequence of onset-related phenomena observed in space and on the ground, and what are the implications for substorm onset processes?

1) Sibeck (overview)-Angelopoulos event overview 2) Mende-for-Lui (Jan. 29 event [#2])3) Larvaud-for-Jacquey (Jan. 29 event [#1])4) Angelopoulos-for-Runov (Mar. 1 event)5) Jiang Liu (Feb. 22 event)6) Baker (Jan. 29 [#2] and Feb. 22 events) 7) Yasong Ge (PiB/Pi2)8) Peter Chi (Pi2)

Session 2: "Pre-onset/breakup aurora"Time: 1:30 pm – 3:00 pm on June 25 (Wed) Room: Interlaken

Science Questions: 1) How does aurora evolve around substorm onsets? 2) Is the onset arc formation an outcome of the M-I coupling,

or is it a manifestation of a tail process? 3) Is the breakup arc Alfvenic or inverted-V? For the former,

how is the associated process related to the formation of the substorm wedge system?

1) Mende (Overview: Observation) 2) Lysak (Overview: Theory)3) Henderson (Q1 & Q2)4) Yan Song (Q2 & Q3)5) Lessard (Q3)

Session 3: MappingTime: 3:30 pm – 5:00 pm on June 25 (Wed) Room: Interlaken

Science Question: How does the presence and evolution of pre-onset and expansion-phase onset current systems affect the link between auroral and plasma sheet locations and processes?

1) Birn (On tail signatures of a thin auroral arc)2) Sitnov (Current limitation and future direction of field-line modeling for substorm study)3) Lyons (pre-onset and onset M-I electrodynamical coupling)4) Zou (Harang reversal evolution and substorm dynamics)5) Angelopoulos for Kubyshukina6) All (Future Planning)