Welcome to the Princeton Polar Ice website! We present research results on the mass change of Earth's ice sheets from gravity measured by the GRACE satellites. This site discusses Greenland, Antarctica, and the Arctic, between about 2003 and about 2015.

More information, including published figures, updated figures, and additional discussion can be found on the Antarctica, the Greenland, and the Arctic pages. We maintaining a collection of open-source software for the localized analysis of GRACE data products.

Details about the methodology and the computer routines can be found on the Methods and Code pages.

3/16/2015     Two articles came out recently! Read/download them from the About/Pubs page.
The first is our recent results detailing the mass loss from Antarctica:
Harig, Christopher and Frederik J. Simons. Accelerated West Antarctic ice mass loss continues to outpace East Antarctica gains. Earth Planet. Sci. Let., 415, 134-141, 2015. http://dx.doi.org/10.1016/j.epsl.2015.01.029

The second is an article in Eos describing the release of the SLEPIAN software package: Harig, Christopher, Kevin W. Lewis, Alain Plattner, and Frederik J. Simons. A suite of software analyzes data on the sphere. Eos, 96, 2015. http://dx.doi.org/10.1029/2015EO025851