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| Titel |
Analysis on variability and trend in Antarctic sea ice albedo between 1983 and 2009 |
| VerfasserIn |
Minji Seo, Hyun-cheol Kim, Sungwon Choi, Kyeong-sang Lee, Kyung-Soo Han |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250148296
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| Publikation (Nr.) |
 EGU/EGU2017-12539.pdf |
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| Zusammenfassung |
| Sea ice is key parameter in order to understand the cryosphere climate change.
Several studies indicate the different trend of sea ice between Antarctica and Arctic.
Albedo is important factor for understanding the energy budget and factors for
observing of environment changes of Cryosphere such as South Pole, due to it
mainly covered by ice and snow with high albedo value. In this study, we analyzed
variability and trend of long-term sea ice albedo data to understand the changes of sea
ice over Antarctica. In addiction, sea ice albedo researched the relationship with
Antarctic oscillation in order to determine the atmospheric influence. We used the sea
ice albedo data at The Satellite Application Facility on Climate Monitoring and
Antarctic Oscillation data at NOAA Climate Prediction Center (CPC). We analyzed
the annual trend in albedo using linear regression to understand the spatial and
temporal tendency. Antarctic sea ice albedo has two spatial trend. Weddle sea / Ross
sea sections represent a positive trend (0.26% ∼ 0.04% yr−1) and Bellingshausen
Amundsen sea represents a negative trend (– 0.14 ∼ –0.25%yr−1). Moreover, we
performed the correlation analysis between albedo and Antarctic oscillation. As a
results, negative area indicate correlation coefficient of – 0.3639 and positive area
indicates correlation coefficient of – 0.0741. Theses results sea ice albedo has regional
trend according to ocean. Decreasing sea ice trend has negative relationship with
Antarctic oscillation, its represent a possibility that sea ice influence atmospheric factor. |
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