HOW ARE SAPS CREATED?

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HOW ARE SAPS CREATED?

• 1. Ring current on nightside enhances.

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HOW ARE SAPS CREATED?

• 2. Region 2 FAC enhances.

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HOW ARE SAPS CREATED?

• 3. Conductance gap between the auroral region and
  the region 2 FAC is created ? Strong poleward
  (Pedersen) currents are driven through the
  low-conductance gap.

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HOW ARE SAPS CREATED?

• 4. Strong poleward E-fields are created ? Strong
  sunward flows and uplifted (ExB) plasma.

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HOW ARE SAPS CREATED?

• 5. Poleward E-fields in the ionosphere ? Radially
  outward E-fields at the inner edge of the ring
  current.

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17 APRIL 2002
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WHAT CAN GLOBAL IMAGING CONTRIBUTE?

• Foks CRCM needs
• R2C FAC (no R1C in CRCM)
• Conductance (auroral)
• HENA can provide R2C FACs.
• SuperDarn, FUV and DMSP can provide conductance.
• Plug in resulting SAPS into Jerrys model.