The steepening of glacier mass balance gradients with northern hemisphere warming. Frontogenesis is the process of creating or steepening the temperature gradient of a front. At the time, the aircraft was descending with a steepening bank of 11 degrees. From here the path bypasses the Narnain Boulders, steepening at around . Shock waves can form due to steepening of ordinary waves. Tupac was leery, but, needing cash to offset steepening legal costs, took the gig.