caa a22 4500 605455627 CHVBK 20210128100213.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10872-014-0270-4 doi (NATIONALLICENCE)springer-10.1007/s10872-014-0270-4 Climatological mean features and interannual to decadal variability of ring formations in the Kuroshio Extension region [Elektronische Daten] [Yoshi Sasaki, Shoshiro Minobe] This study examines the climatological mean features of oceanic rings shed from the Kuroshio Extension (KE) jet and their interannual to decadal variability using satellite altimeter observations from October 1992 to December 2010. To objectively capture ring shedding from the KE jet, a new method that consists of the detection of the jet length changes and the tracking of a ring is proposed. Spatial distribution of the ring formations in the KE region indicates that cyclonic (cold-core) rings were most frequently formed in the upstream region between 143° and 147°E around the steady meander of the KE jet. In contrast, most of anticyclonic (warm-core) rings were formed in the downstream region west of the Shatsky Rise. These pinched-off rings in both the upstream and downstream regions generally propagated westward, but about two-thirds of the rings were reabsorbed by the jet. Nevertheless, about one-fourth of the meridional eddy heat transport at the latitude of the KE resulted from the rings that are not reabsorbed by the jet. The number of ring formations showed substantial interannual to decadal variability. In the upstream and downstream KE region, decadal and interannual variability was dominant, respectively. These ring formation fluctuations were negatively correlated with the strength of the KE jet. It is also revealed that the ring formation variations play an important role in sea surface temperature changes north of the KE jet. The Oceanographic Society of Japan and Springer Japan, 2015 Kuroshio Extension nationallicence Pinch-off ring nationallicence Jet nationallicence Heat transport nationallicence Interannual to decadal variability nationallicence Sasaki Yoshi Science 8th bldg 8-3-20, Graduate School of Science, Hokkaido University, N10 W8, 060-0810, Sapporo, Japan aut Minobe Shoshiro Science 8th bldg 8-3-20, Graduate School of Science, Hokkaido University, N10 W8, 060-0810, Sapporo, Japan aut Journal of Oceanography Springer Japan 71/5(2015-10-01), 499-509 0916-8370 71:5<499 2015 71 10872 https://doi.org/10.1007/s10872-014-0270-4 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/s10872-014-0270-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sasaki Yoshi Science 8th bldg 8-3-20, Graduate School of Science, Hokkaido University, N10 W8, 060-0810, Sapporo, Japan aut NATIONALLICENCE 700 1- Minobe Shoshiro Science 8th bldg 8-3-20, Graduate School of Science, Hokkaido University, N10 W8, 060-0810, Sapporo, Japan aut NATIONALLICENCE 773 0- Journal of Oceanography Springer Japan 71/5(2015-10-01), 499-509 0916-8370 71:5<499 2015 71 10872