claim: Some of the regions in which  GRACE claims ice loss in East Antarctica average colder than -30°C  during the summer, and never, ever get above freezing.
evidence: The long term cooling in the lower stratosphere occurred in two downward steps in temperature both after the transient warming related to explosive volcanic eruptions of El Chichón and Mount Pinatubo, this behavior of the global stratospheric temperature has been attributed to global ozone concentration variation in the two years following volcanic eruptions.