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Open AccessAnisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy
Arrayed waveguide grating is a versatile and scalable integrated light dispersion device, which has been widely adopted in various applications, including, optical communications and optical sensing. Recently,...
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Article
Open AccessNew Record Ocean Temperatures and Related Climate Indicators in 2023
The global physical and biogeochemical environment has been substantially altered in response to increased atmospheric greenhouse gases from human activities. In 2023, the sea surface temperature (SST) and upp...
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Effects of climate modes on interannual variability of the equatorial currents in the Indian ocean
This study uses two reanalysis datasets and ocean model experiments to examine the dynamics of the interannual variability of the equatorial currents in the Indian Ocean, and to quantify the effects of the El ...
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Open AccessAnother Year of Record Heat for the Oceans
Changes in ocean heat content (OHC), salinity, and stratification provide critical indicators for changes in Earth’s energy and water cycles. These cycles have been profoundly altered due to the emission of gr...
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Article
Three-dimensional characteristics of mesoscale eddies simulated by a regional model in the northwestern Pacific Ocean during 2000–2008
Mesoscale eddies play vital roles in ocean processes. Although previous studies focused on eddy surface features and individual three-dimensional (3D) eddy cases in the northwestern Pacific Ocean, the analysis...
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Article
Effect of seasonal barrier layer on mixed-layer heat budget in the Bay of Bengal
Time series measurements (2010–2017) from the Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA) moorings at 15°N, 90°E and 12°N, 90°E are used to investigate the effect ...
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Article
Intraseasonal variability of the surface zonal current in the equatorial Indian Ocean: Seasonal differences and causes
Using observations and numerical simulations, this study examines the intraseasonal variability of the surface zonal current (u ISV) over the equatorial Indian Ocean, highlighting the seasonal and spatial differe...
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Open AccessAnother Record: Ocean Warming Continues through 2021 despite La Niña Conditions
The increased concentration of greenhouse gases in the atmosphere from human activities traps heat within the climate system and increases ocean heat content (OHC). Here, we provide the first analysis of recen...
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Three-dimensional properties of mesoscale cyclonic warm-core and anticyclonic cold-core eddies in the South China Sea
In general, a mesoscale cyclonic (anticyclonic) eddy has a colder (warmer) core, and it is considered as a cold (warm) eddy. However, recently research found that there are a number of “abnormal” mesoscale cyc...
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Article
Interannual variability of summertime eddy-induced heat transport in the Western South China Sea and its formation mechanism
The interannual variability of summertime eddy-induced heat transport (EHT) in the western South China Sea (WSCS) is investigated based on the downgradient eddy diffusivity method and explored its formation me...
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Upper Ocean Temperatures Hit Record High in 2020
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Observation system simulation experiments using an ensemble-based method in the northeastern South China Sea
An ensemble-based method for the observation system simulation experiment (OSSE) is employed to design optimal observation stations and assess the present observation stations in the northeastern South China S...
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Article
Propagation properties of Airy hollow Gaussian vortex beams through the strongly nonlocal nonlinear media
We introduce a class of Airy hollow Gaussian vortex (AiHGV) beams and derive the analytical propagating expression of the AiHGV beams in strongly nonlocal nonlinear media (SNNM) using the transfer matrix metho...
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Multi-scale variability of the tropical Indian Ocean circulation system revealed by recent observations
The tropical Indian Ocean circulation system includes the equatorial and near-equatorial circulations, the marginal sea circulation, and eddies. The dynamic processes of these circulation systems show signific...
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A three-dimensional modeling study on eddy-mean flow interaction between a Gaussian-type anticyclonic eddy and Kuroshio
The Princeton ocean model is employed to study the energy balance of a fast-moving anticyclonic eddy (AE) during eddy-mean flow interaction. The AE is initialized with an axisymmetric Gaussian-type temperature...
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Numerical study on the eddy–mean flow interaction between a cyclonic eddy and Kuroshio
A three-dimensional primitive equations ocean model (POM) is employed to study the momentum and energy balance of a moving cyclonic eddy (CE) during eddy–mean flow interaction. The CE generated by an idealized...
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Article
Open AccessObserved deep energetic eddies by seamount wake
Despite numerous surface eddies are observed in the ocean, deep eddies (a type of eddies which have no footprints at the sea surface) are much less reported in the literature due to the scarcity of their obser...
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Article
Physical and biological controls on the summer chlorophyll bloom to the east of Vietnam
The contributions of physical and biological processes to the chlorophyll-a (Chl-a) bloom to the east of Vietnam in summer are examined. The offshore jet redistributes Chl-a concentration by transporting high ...
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Article
Westward intensification in marginal seas
An idealized model was used to examine why the strong western boundary current (WBC) is observed in the South China Sea (SCS) but not in the Gulf of Mexico (GOM) and Japan/East Sea (JES). Results suggested tha...
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Article
Intrusion of the Kuroshio into the South China Sea, in September 2008
Using widespread conductivity–temperature–depth (CTD) data in the Philippine Sea and northern South China Sea near the Luzon Strait together with altimeter data, we identified an intrusion of water from the Ku...