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Quantitative comparison of cross polar cap potential as derived from AMIE, DMSP, SuperDARN

Quantitative comparison of cross polar cap potential as derived from AMIE, DMSP, SuperDARN . Elsayed R. Talaat 1 , Marc Hairston 2 , Geoff Crowley 3 , Robin Barnes 1 , Thomas Sotirelis 1 1 Johns Hopkins University Applied Physics Laboratory 2 University of Texas, Dallas 3 ASTRA.

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Quantitative comparison of cross polar cap potential as derived from AMIE, DMSP, SuperDARN

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  1. Quantitative comparison of cross polar cap potential as derived from AMIE, DMSP, SuperDARN Elsayed R. Talaat1, Marc Hairston2, Geoff Crowley3, Robin Barnes1, Thomas Sotirelis1 1Johns Hopkins University Applied Physics Laboratory 2University of Texas, Dallas 3ASTRA elsayed.talaat@jhuapl.edu

  2. Chasing AMIE • Data used • SuperDARN derived CPCP with propagated solar wind – product we provide on the website • DMSP observed CPCP – 1997-2007 • AMIE derived CPCP w/ mag – 1991-2002, 2006, 2007 • AMIE derived CPCP w/ mag, DMSP – 2000-2005 • AMIE derived CPCP w/ mag, DMSP, SuperDARN – 2001-2005 • AMIE derived CPCP w/ mag, SuperDARN – 2006,2007 • Some large issues • Data sets and models cover different times • AMIE with DMSP and AMIE with DMSP, SD not vetted • Some progress AMIE coverage doubled since last year

  3. DMSP vetting • Marc Hairston has done extensive vetting of the data, removing light ion contamination

  4. DMSP vs SD

  5. AMIE vs SD

  6. Periodicities in SuperDARN

  7. Periodicities in DMSP

  8. Periodicities in AMIE w/o SD

  9. Periodicities in AMIE w/o SD

  10. Periodicities in AMIE w/ DMSP and SD

  11. Seasonal Analysis of Large Storms

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