NASA has supplied the best data to date on the state of antarctic ice. They have been measuring the mass of the content since 2002. What they have found is every year since 2002 the continent has a whole has been losing mass. They have also concluded that the rate of mass loss is accelerating.
This is why space is so cool. Instead of taking a bunch of diverse ground data and trying to stick it together with math, they just went ahead and weighed the continent. Ground science is still important for looking into causes and mechanisms, but nothing beats a direct measurement.
There are also satellites measuring global temperatures for both the air and the ocean. Hopefully this data in a similar fashion will be the gold standard for direct measurement of global climate change.