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Seasonal Evolution of Ice Mass in Antarctic Peninsular recovered by GRACE data after removing correlation errors

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Title
Seasonal Evolution of Ice Mass in Antarctic Peninsular recovered by GRACE data after removing correlation errors
Other Titles
상관 에러가 제거된 그레이스 자료를 통해 획득한 남극 반도의 계절적 질량 변화
Authors
Eom, Jooyoung
Yang, Jun-Mo
Seo, Ki-Won
Lee, Choon-Ki
Issue Date
2016
Citation
Eom, Jooyoung, et al. 2016. Seasonal Evolution of Ice Mass in Antarctic Peninsular recovered by GRACE data after removing correlation errors. AGU Fall Meeting 2016. Moscone Center West, 800 Howard St.. 2016.12.12~2016.12.16.
Abstract
Since 2002, the Gravity Recovery And Climate Experiment (GRACE) has delivered monthly gravity solutions after removing effects from tides, ocean dynamics and barometric pressure using geophysical models. However, incompleteness of the models causes aliasing errors containing peculiar longitudinal stripes. Those north-south patterns have been corrected by a spatial filter, but caution is necessary for the correction because signals with longitudinal patterns are possibly removed during the procedure. This would be particularly problematic for recovering ice mass signals in Antarctic Peninsula which is elongated along the north-south direction. In this study, we suggest an effective filter to reduce the correlation error using extended Empirical Orthogonal Function (EOF). The extended EOF is useful to separate spatially and temporally coherent signal, and thus much of the correlation error can be suppressed with less signal attenuation. After the extended EOF filtering, we can find month-to-month evolution of ice mass signals in the Peninsular.
URI
http://repository.kopri.re.kr/handle/201206/7179
Conference Name
AGU Fall Meeting 2016
Conference Place
Moscone Center West, 800 Howard St.
Conference Date
2016.12.12~2016.12.16
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