In search for a stable, well characterized terrestrial calibration target for SMOS, an airborne campaign was carried out in January 2013 over the Dome C area of Antarctica, and the surface was measured by an L-band radiometer. The focus was on homogeneity, and an area of 350 × 350 km around the Concordia station was surveyed using grid, star, and circular flight patterns. Significant and maybe surprising dynamics in brightness temperature is observed. An East-West line through Concordia displays almost 10 K variations, and in specific cases a slope of almost 1 K per km. It is concluded that use of the Dome C area for calibration check of spaceborne radiometers is indeed viable, but with caution - especially when comparing instruments with differing spatial resolutions.
|Title of host publication||Proceedings of ESA Living Planet Symposium|
|Publisher||European Space Agency|
|Publication status||Published - 2013|
|Event||ESA Living Planet Symposium — 2013 - Edinburgh, United Kingdom|
Duration: 9 Sep 2013 → 13 Sep 2013
|Conference||ESA Living Planet Symposium — 2013|
|Period||09/09/2013 → 13/09/2013|
Skou, N., Kristensen, S. S., Søbjærg, S. S., & Balling, J. E. (2013). DOMECair: An Airborne Campaign in Antarctica Supporting SMOS Calibration. In Proceedings of ESA Living Planet Symposium European Space Agency.