Abstract
A 350 × 350 km area near the Concordia station on the high plateau of Dome C in Antarctica has been mapped by an airborne L-band radiometer system. The area was expected to display a rather uniform brightness temperature close to the yearly mean temperature — well suited for calibration checks for spaceborne instruments like SMOS, Aquarius, and SMAP. The measured brightness temperatures shows unexpected variations like 8 K variation on an East-West profile through Concordia, and in certain cases a slope of almost 1 K per km. Comparing the measured brightness temperature map with bottom topography reveals a convincing correlation. Simulations show that variations in bedrock topography can indeed modulate the brightness temperature appropriately to explain the observed variations.
Original language | English |
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Title of host publication | Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 |
Number of pages | 4 |
Publisher | IEEE |
Publication date | 2014 |
Pages | 3610-3613 |
ISBN (Electronic) | 9781479957750 |
DOIs | |
Publication status | Published - 2014 |
Event | 2014 IEEE Geoscience and Remote Sensing Symposium: Energy and our Changing Planet - Quebec City, Canada Duration: 13 Jul 2014 → 18 Jul 2014 https://ieeexplore.ieee.org/xpl/conhome/6919813/proceeding |
Conference
Conference | 2014 IEEE Geoscience and Remote Sensing Symposium |
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Country/Territory | Canada |
City | Quebec City |
Period | 13/07/2014 → 18/07/2014 |
Other | In collaboration with the 35th Canadian Symposium on Remote Sensing (CSRS) |
Internet address |
Keywords
- Geoscience
- Antarctica
- Brightness temperature
- Calibration
- L-band
- radiometer
- Radiometry
- Surfaces
- Temperature measurement