The Research Advancements and Historical Episodes brought by the Kuroshio Flowing across Generations

Nagai, Takeyoshi; Otsuka, Kazuyuki; Nakano, Hiroshi

doi:10.1002/9781119428428.ch2

Cited by 3 publications

(2 citation statements)

References 85 publications

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“…Multiscale physical processes in the region impact air‐sea exchanges, seawater geochemistry, and marine ecosystems. As such, KOE represents a biological “hotspot” for carbon cycling in the northwest Pacific Ocean (Nagai et al., 2019).…”

Section: Methodsmentioning

confidence: 99%

Methanol Concentrations and Biological Methanol Consumption in the Northwest Pacific Ocean

Zhou

Zhuang

Mao

et al. 2023

Geophysical Research Letters

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Methanol is one of the most abundant oxygenated volatile organic compounds in the atmosphere and plays an important role in atmospheric chemistry and ocean ecology (Heikes et al., 2002;Singh et al., 2001;Zhuang et al., 2018). Due to the variability of methanol concentrations and sea-air exchange fluxes between locations, uncertainty remains as to whether the ocean is a source or sink of atmospheric methanol. For example, Beale et al. ( 2013) observed methanol exchange in both directions in the Atlantic Ocean with a net oceanic emission of 12 Tg yr −1 , while Yang et al. ( 2013) reported a global extrapolation of −42 Tg yr −1 based on the atmospheric deposition of methanol over the Atlantic Ocean. In situ methanol production is often observed in oceanic waters (Dixon, Beale, et al., 2013) and phytoplankton could be a key methanol producer (Mincer & Aicher, 2016). However, methanol concentrations are maintained in the nanomolar range due to rapid consumption by marine microorganisms (

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Section: Methodsmentioning

confidence: 99%

Methanol Concentrations and Biological Methanol Consumption in the Northwest Pacific Ocean

Zhou

Zhuang

Mao

et al. 2023

Geophysical Research Letters

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“…Moreover, the dominant nutrient density of zooplankton within these cyclonic circulations influences the path of KC. Higher density slows down the Kuroshio and leads to large meandering [19].…”

Section: Introductionmentioning

confidence: 99%

A Combination of Spatial Domain Filters to Detect Surface Ocean Current from Multi-Sensor Remote Sensing Data

Lee

2022

Remote Sensing

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This research investigates the applicability of combining spatial filter’s algorithm to extract surface ocean current. Accordingly, the raster filters were tested on 80–13,505 daily images to detect Kuroshio Current (KC) on weekly, seasonal, and climatological scales. The selected raster filters are convolution, Laplacian, north gradient, sharpening, min/max, histogram equalization, standard deviation, and natural break. In addition, conventional data set of sea surface currents, sea surface temperature (SST), sea surface height (SSH), and non-conventional data such as total heat flux, surface density (SSD), and salinity (SSS) were employed. Moreover, controversial data on ocean color are included because very few studies revealed that chlorophyll-α is a proxy to SST in the summer to extract KC. Interestingly, the performance of filters is uniform and thriving for seasonal and on a climatological scale only by combining the algorithms. In contrast, the typical scenario of identifying Kuroshio signatures using an individual filter and by designating a value spectrum is inapplicable for specific seasons and data set. Furthermore, the KC’s centerlines computed from SST, SSH, total heat flux, SSS, SSD, and chlorophyll-α correlate with sea surface currents. Deviations are observed in the various segments of Kuroshio’s centerline extracted from heat flux, chlorophyll-α, and SSS flowing across Tokara Strait from northeast Taiwan to the south of Japan.

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Temporal variation of the 2017 Kuroshio large meander based on repeated surveys along 138°E

Ito,

Shimizu,

Setou

et al. 2024

J Oceanogr

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The Research Advancements and Historical Episodes brought by the Kuroshio Flowing across Generations

Cited by 3 publications

References 85 publications

Methanol Concentrations and Biological Methanol Consumption in the Northwest Pacific Ocean

Methanol Concentrations and Biological Methanol Consumption in the Northwest Pacific Ocean

A Combination of Spatial Domain Filters to Detect Surface Ocean Current from Multi-Sensor Remote Sensing Data

Temporal variation of the 2017 Kuroshio large meander based on repeated surveys along 138°E

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