Sastrugi – decimeter-scale snow dunes formed by wind redistribution of snow – cover the Antarctic ice sheet. Their scale is a complex function of recent weather and climate conditions, including snowfall, humidity, wind speed, and temperature. Using a simple spatial filtering mechanism on Landsat 8 panchromatic images, we have created a tentative method for mapping the scale of sastrugi based on the increased contrast of the surface in clear-sky daytime satellite images. Initial results suggest that persistent patterns of increased roughness associated with steeper surface slopes (and therefore, higher mean wind speeds) and possibly with with seasonal climate. Our study investigates several years of austral spring and summer image, resulting in an initial map of mean sastrugi roughness of central West Antarctica, and several profiles showing seasonal variations. Ongoing work aims to quantify the 'roughness index' generated from the spatial filter processing, and construct profiles that align with the mean wind direction as well as the topography. We also plan to look at climate conditions prior to the images with the more extreme (smooth or rough) index values.