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Validation of Regional-Scale Remote Sensing Products in China: From Site to Network
Open AccessArticle

Long-Term Variability of Surface Albedo and Its Correlation with Climatic Variables over Antarctica

Division of Earth Environmental System Science (Major of Spatial Information Engineering), Pukyong National University, Busan 48513, Korea
Korea Polar Research Institute, Incheon 21990, Korea
Korea Aerospace Research Institute, Daejeon 34133, Korea
National Meteorological Satellite Centre, Jincheon-gun 27803, Korea
Author to whom correspondence should be addressed.
Academic Editors: Dongdong Wang, Richard Müller and Prasad S. Thenkabail
Remote Sens. 2016, 8(12), 981;
Received: 22 August 2016 / Revised: 1 November 2016 / Accepted: 17 November 2016 / Published: 28 November 2016
The cryosphere is an essential part of the earth system for understanding climate change. Components of the cryosphere, such as ice sheets and sea ice, are generally decreasing over time. However, previous studies have indicated differing trends between the Antarctic and the Arctic. The South Pole also shows internal differences in trends. These phenomena indicate the importance of continuous observation of the Polar Regions. Albedo is a main indicator for analyzing Antarctic climate change and is an important variable with regard to the radiation budget because it can provide positive feedback on polar warming and is related to net radiation and atmospheric heating in the mainly snow- and ice-covered Antarctic. Therefore, in this study, we analyzed long-term temporal and spatial variability of albedo and investigated the interrelationships between albedo and climatic variables over Antarctica. We used broadband surface albedo data from the Satellite Application Facility on Climate Monitoring and data for several climatic variables such as temperature and Antarctic oscillation index (AAO) during the period of 1983 to 2009. Time series analysis and correlation analysis were performed through linear regression using albedo and climatic variables. The results of this research indicated that albedo shows two trends, west trend and an east trend, over Antarctica. Most of the western side of Antarctica showed a negative trend of albedo (about −0.0007 to −0.0015 year−1), but the other side showed a positive trend (about 0.0006 year−1). In addition, albedo and surface temperature had a negative correlation, but this relationship was weaker in west Antarctica than in east Antarctica. The correlation between albedo and AAO revealed different relationships in the two regions; west Antarctica had a negative correlation and east Antarctica showed a positive correlation. In addition, the correlation between albedo and AAO was weaker in the west. This suggests that the eastern area is influenced by the atmosphere, but that the western area is influenced more strongly by other factors. View Full-Text
Keywords: Antarctica; ice sheet albedo; Antarctic oscillation index; in situ temperature Antarctica; ice sheet albedo; Antarctic oscillation index; in situ temperature
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Seo, M.; Kim, H.-C.; Huh, M.; Yeom, J.-M.; Lee, C.S.; Lee, K.-S.; Choi, S.; Han, K.-S. Long-Term Variability of Surface Albedo and Its Correlation with Climatic Variables over Antarctica. Remote Sens. 2016, 8, 981.

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