The relationship between significant wave height and Indian Ocean Dipole in the equatorial North Indian Ocean
Fu, C; Wang, DX; Yang, L; Luo, Y; Zhou, FH; Priyadarshana, T; Yao, JL; leiyang@scsio.ac.cn
2018
发表期刊OCEAN DYNAMICS
卷号68期号:6页码:689-699
摘要Based on reanalysis data, we find that the Indian Ocean Dipole (IOD) plays an important role in the variability of wave climate in the equatorial Northern Indian Ocean (NIO). Significant wave height (SWH) in the equatorial NIO, especially over the waters southeast to Sri Lanka, exhibits strong interannual variations. SWH anomalies in the waters southeast to Sri Lanka correlate well with dipole mode index (DMI) during both summer and autumn. Negative SWH anomalies occur over the oceanic area southeast to Sri Lanka during positive IOD events and vary with different types of IOD. During positive prolonged (unseasonable) IOD, the SWH anomalies are the strongest in autumn (summer); while during positive normal IOD, the SWH anomalies are weak in both summer and autumn. Strong easterly wind anomalies over the southeast oceanic area of Sri Lanka during positive IOD events weaken the original equatorial westerly wind stress, which leads to the decrease in wind-sea waves. The longer wave period during positive IOD events further confirms less wind-sea waves. The SWH anomaly pattern during negative IOD events is nearly opposite to that during positive IOD events.
部门归属[Fu, Chen; Wang, Dongxiao; Yang, Lei; Luo, Yao; Zhou, Fenghua; Yao, Jinglong] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China; [Fu, Chen] Univ Chinese Acad Sci, Beijing, Peoples R China; [Priyadarshana, Tilak] Univ Ruhuna, Fac Fisheries & Marine Sci & Technol, Matara, Sri Lanka
关键词Significant Wave Height Indian Ocean Dipole Interannual Variability The Equatorial North Indian Ocean
学科领域Oceanography
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17071
专题热带海洋环境国家重点实验室(LTO)
通讯作者leiyang@scsio.ac.cn
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Fu, C,Wang, DX,Yang, L,et al. The relationship between significant wave height and Indian Ocean Dipole in the equatorial North Indian Ocean[J]. OCEAN DYNAMICS,2018,68(6):689-699.
APA Fu, C.,Wang, DX.,Yang, L.,Luo, Y.,Zhou, FH.,...&leiyang@scsio.ac.cn.(2018).The relationship between significant wave height and Indian Ocean Dipole in the equatorial North Indian Ocean.OCEAN DYNAMICS,68(6),689-699.
MLA Fu, C,et al."The relationship between significant wave height and Indian Ocean Dipole in the equatorial North Indian Ocean".OCEAN DYNAMICS 68.6(2018):689-699.
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