In fact, there are now well over 150 individual assessments of ice sheet mass balance based on measurements acquired by at least 15 different satellite missions. (imbie.org)
The study of ice sheet mass balance underwent two major advances, one during the early 1990s, and again early in the 2000s. (nsidc.org)
Data for the modern rate of annual ice sheet mass changes indicate an accelerating rate of mass loss consistent with a mass loss doubling time of a decade or less (Fig. 10). (journals.plos.org)