Time series analysis of the Antarctic Circumpolar Wave via symbolic transfer entropy

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Title
Time series analysis of the Antarctic Circumpolar Wave via symbolic transfer entropy
Author(s)
Oh M.; Kim S.; Kyuseong Lim; Kim S.Y.
Publication Date
2018-06
Journal
PHYSICA A, v.499, no., pp.233 - 240
Publisher
ELSEVIER SCIENCE BV
Abstract
An attempt to interpret a large-scale climate phenomenon in the Southern Ocean (SO), the Antarctic Circumpolar Wave (ACW), has been made using an information entropy method, symbolic transfer entropy (STE). Over the areas of 50–60∘S latitude belt, information flow for four climate variables, sea surface temperature (SST), sea–ice edge (SIE), sea level pressure (SLP) and meridional wind speed (MWS) is examined. We found a tendency that eastward flow of information is preferred only for oceanic variables, which is a main characteristic of the ACW, an eastward wave making a circuit around the Antarctica. Since the ACW is the coherent pattern in both ocean and atmosphere it is reasonable to infer that the tendency reflects the Antarctic Circumpolar Current (ACC) encircling the Antarctica, rather than an evidence of the ACW. We observed one common feature for all four variables, a strong information flow over the area of the eastern Pacific Ocean, which suggest a signature of El Nino Southern Oscillation (ENSO). © 2018 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/5786
ISSN
0378-4371
Appears in Collections:
Center for Neuroscience Imaging Research (뇌과학 이미징 연구단) > Journal Papers (저널논문)
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