[37] One of the first results emerging from Venus Express is the discovery that a huge double atmospheric vortex exists at the
south pole of the planet.
Nearly circular bands, called auroral ovals, surround
both poles of our planet.
It provides more details about previously reported cyclones clustered around
the poles of both planets.
Changes in temperatures, which are magnified near
the poles of our planet, are particularly problematic: «Earlier spring green - ups now occur before migrating herds arrive north.