caa a22 4500 605455589 CHVBK 20210128100213.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10872-015-0284-6 doi (NATIONALLICENCE)springer-10.1007/s10872-015-0284-6 Atlantic-Pacific asymmetry of subsurface temperature change and frontal response of the Antarctic Circumpolar Current for the recent three decades [Elektronische Daten] [Shigeru Aoki, Genta Mizuta, Hideharu Sasaki, Yoshikazu Sasai, Stephen Rintoul, Nathaniel Bindoff] For the 32-year period from 1979 to 2010, trends of surface and subsurface temperature and meridional motion of the current system in the Antarctic Circumpolar Current (ACC) region are studied with in situ observations and an eddy-resolving general circulation model. The observed and simulated surface temperature shows a similar pattern between the Atlantic and Pacific: warming to the north of the Subantarctic/Subtropical Fronts in the Atlantic and of the Subtropical Front in the Pacific and cooling to the south of those fronts. The subsurface temperature trend, again from both observation and model, reveals an asymmetric pattern between the Atlantic and Pacific: subsurface warming is dominant over the whole ACC region in the Atlantic, while both warming and cooling are significant in the Pacific, the former located to the north of the Subantarctic Front and the latter to the south. The model reveals that the ACC has generally shifted poleward in the Atlantic, while it has shifted equatorward around Subantarctic Front and Polar Front in the Pacific. The ACC shift is consistent with the overall subsurface temperature trend. The basin-scale difference of the ACC response can be related to the different regime of the trend in meridional gradient of the zonal wind stress to the north and south of 50-55°S and suggests a coupling of the ACC and overlying westerly on the multi-decadal time scale. The Oceanographic Society of Japan and Springer Japan, 2015 Antarctic Circumpolar Current nationallicence Atlantic nationallicence Pacific nationallicence Warming nationallicence Frontal shift nationallicence Multi-decadal variability nationallicence Aoki Shigeru Institute of Low Temperature Science, Hokkaido University, N19W8, Kita-Ku, 060-0819, Sapporo, Japan aut Mizuta Genta Graduate School of Environmental Sciences, Hokkaido University, N10W5, Kita-ku, 060-0810, Sapporo, Japan aut Sasaki Hideharu Application Laboratory, JAMSTEC, 3173-25 Showa-machi, Kanazawa-ku, 236-0001, Yokohama, Kanagawa, Japan aut Sasai Yoshikazu Research and Development Center for Global Change, JAMSTEC, 3173-25 Showa-machi, Kanazawa-ku, 236-0001, Yokohama, Kanagawa, Japan aut Rintoul Stephen Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia aut Bindoff Nathaniel Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia aut Journal of Oceanography Springer Japan 71/5(2015-10-01), 623-636 0916-8370 71:5<623 2015 71 10872 https://doi.org/10.1007/s10872-015-0284-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10872-015-0284-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aoki Shigeru Institute of Low Temperature Science, Hokkaido University, N19W8, Kita-Ku, 060-0819, Sapporo, Japan aut NATIONALLICENCE 700 1- Mizuta Genta Graduate School of Environmental Sciences, Hokkaido University, N10W5, Kita-ku, 060-0810, Sapporo, Japan aut NATIONALLICENCE 700 1- Sasaki Hideharu Application Laboratory, JAMSTEC, 3173-25 Showa-machi, Kanazawa-ku, 236-0001, Yokohama, Kanagawa, Japan aut NATIONALLICENCE 700 1- Sasai Yoshikazu Research and Development Center for Global Change, JAMSTEC, 3173-25 Showa-machi, Kanazawa-ku, 236-0001, Yokohama, Kanagawa, Japan aut NATIONALLICENCE 700 1- Rintoul Stephen Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia aut NATIONALLICENCE 700 1- Bindoff Nathaniel Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia aut NATIONALLICENCE 773 0- Journal of Oceanography Springer Japan 71/5(2015-10-01), 623-636 0916-8370 71:5<623 2015 71 10872