title: Anomalous behaviors of Wyrtki Jets in the equatorial Indian Ocean during 2013.
abstract: In-situ measurement of the upper ocean velocity discloses significant abnormal behaviors of two Wyrtki Jets (WJs) respectively in boreal spring and fall, over the tropical Indian Ocean in 2013. The two WJs both occurred within upper 130 m depth and persisted more than one month. The exceptional spring jet in May was unusually stronger than its counterpart in fall, which is clearly against the previous understanding. Furthermore, the fall WJ in 2013 unexpectedly peaked in December, one month later than its climatology. Data analysis and numerical experiments illustrate that the anomalous changes in the equatorial zonal wind, associated with the strong intra-seasonal oscillation events, are most likely the primary reason for such anomalous WJs activities.
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.|Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Duan
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.|Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.
authors.forename: Guoqing
authors.initials: G
authors.lastname: Han
authors.affiliation: Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Liu
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.|Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Yu
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.|Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.|Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
authors.forename: Huiwu
authors.initials: H
authors.lastname: Wang
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.
authors.forename: Haiyuan
authors.initials: H
authors.lastname: Wang
authors.affiliation: Center for Ocean and Climate Research, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.|Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
authors.forename: Yanliang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Maldives Meteorological Service, Hulhulé 22000, Maldives.
authors.lastname: Zahid
authors.affiliation: Maldives Meteorological Service, Hulhulé 22000, Maldives.
authors.forename: Hussain
authors.initials: H
authors.lastname: Waheed