Outer plasmaspheric circulation Mark B. Moldwin, D. Berube, M. Thomsen, B. Sandel The behavior of the outer plasmasphere and plasmapause will be reviewed. Recent observations that have advanced our understanding of the outer plasmasphere, particularly those during extreme quiet and extreme active conditions will be highlighted. Studies that utilize combinations of ground based, in situ, and IMAGE EUV remote sensing data have shown the extreme variability of the structure of the outer plasmasphere, but emphasize the overall flow of plasmaspheric plasma to the dayside magnetopause. _______________ Presented at the IUGG/IAGA meeting, Sapporo, Japan 30 June - 11 July 2003