The U.S. Antarctic Program Data Center (USAP-DC) supports investigators funded by the National Science Foundation (NSF http://www.nsf.gov/ ) in documenting, preserving, and disseminating their research results. We register datasets in the Antarctic Master Directory (AMD http://gcmd.nasa.gov/portals/amd/ ) to comply with the Antarctic Treaty (http://www.ats.aq/e/ats.htm ); facilitate submission of datasets to long-term archives; and represent the U.S. in Scientific Committee on Antarctic Research (SCAR http://www.scar.org/data-products/scadm ) activities. USAP-DC is a member of the Interdisciplinary Earth Data Alliance (IEDA http://www.iedadata.org/ ) and a partner in the Antarctic and Arctic Data Consortium (A2DC http://www.a2dc.org/ ).