Fig. 1.
From: Space Weather opportunities from the Swarm mission including near real time applications
Global coverage of the Swarm satellites for one day after 13 days in orbit (left) and 15 days in orbit (right) (Olsen, 2004) Red: Swarm A, Green: Swarm B, Blue: Swarm C. Orbits are shown globally (upper panels) and over the north and south pole (lower panels). Black lines indicate the location of the equator and 70° north and south in quasi-dipole (QD) coordinates. Crosses indicate the location of the QD poles. (See online version for colored figures.)