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

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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 degrees 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). (C) 2018 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

NINO-SOUTHERN-OSCILLATION; INFORMATION-FLOW; OCEAN; TEMPERATURE

Citation

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, v.499, pp.233 - 240

ISSN
0378-4371
DOI
10.1016/j.physa.2017.12.019
URI
http://hdl.handle.net/10203/241494
Appears in Collection
PH-Journal Papers(저널논문)
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