Several years of continuous data have been collected at remote bedrock Global Positioning System (GPS)
sites in southern Victoria Land, Antarctica. Annual to sub-annual variations are observed in the position time-series. An
atmospheric pressure loading (APL) effect is calculated from pressure field anomalies supplied by the European Centre
for Medium-Range Weather Forecasts (ECMWF) model loading an elastic Earth model. The predicted APL signal has
a moderate correlation with the vertical position time-series at McMurdo, Ross Island (International Global Navigation
Satellite System Service (IGS) station MCM4), produced using a global solution. In contrast, a local solution in which
MCM4 is the fiducial site generates a vertical time series for a remote site in Victoria Land (Cape Roberts, ROB4)
which exhibits a low, inverse correlation with the predicted atmospheric pressure loading signal. If, in the future,
known and well modeled geophysical loads can be separated from the time-series, then local hydrological loading, of
interest for glaciological and climate applications, can potentially be extracted from the GPS time-series.
