I'm glad you didn't say "unbiased", considering that Patrick Michaels has made a career out of a) denying global warming is taking place, and b) once faced with the reality of global warming taking place [and admitting it], denying that anything significant will happen because of it. What's (c) going to be, I wonder? {I hope that wasn't too impolite; Michaels is nothing if not predictable.}
Prior to this study hitting the news, I previously discussed other measurements of the Greenland and Antarctic ice sheets. The Greenland trends are considered in line with global warming predictions when there is a warmer ocean surface; i.e., mass gain at the higher elevations due to increased precipitation caused by increased water vapor in the atmosphere, and increased melting at lower elevations due to higher temperatures. Other Antarctic measurements using satellite altimetry show that the West Antarctic ice sheet is losing significant mass, the East Antarctic ice sheet is gaining a bit, for an overall loss of mass. This is based on nine years of data, not three, but the trends are consistent. Also note that the West Antarctic ice sheet is considered less stable than the East Antarctic ice sheet.