Figure 12-7: R I V U X G
Dark Belt Fades on Jupiter The south equatorial belt completely faded from view between mid-2009 and mid-2010. White-colored ammonia ice crystals appeared at higher elevations, blocking the darker belt from view, but the full mechanism is not understood. By late 2010, the belt began to reappear.
(NASA, ESA, UC Berkeley, STScI, Jupiter Impact Science Team)