Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing
The Japan/East Sea (JES) is known as a mid-latitude “Miniature Ocean” that features multiscale oceanic dynamical processes. Using principal component analysis (PCA), we investigate the variability of the sea surface chlorophyll-a concentration (SSC) and its bloom timing in the JES based on satellite...
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ftdoajarticles:oai:doaj.org/article:164eccf04bdc43318caac82921a0a35c 2023-05-15T18:18:08+02:00 Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing Dingqi Wang Guohong Fang Shumin Jiang Qinzeng Xu Guanlin Wang Zexun Wei Yonggang Wang Tengfei Xu 2022-12-01T00:00:00Z https://doi.org/10.3389/fmars.2022.1065066 https://doaj.org/article/164eccf04bdc43318caac82921a0a35c EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2022.1065066/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.1065066 https://doaj.org/article/164eccf04bdc43318caac82921a0a35c Frontiers in Marine Science, Vol 9 (2022) sea surface chlorophyll-a concentration (SSC) Japan/East Sea (JES) spring bloom fall bloom interannual variability Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2022 ftdoajarticles https://doi.org/10.3389/fmars.2022.1065066 2022-12-30T19:43:14Z The Japan/East Sea (JES) is known as a mid-latitude “Miniature Ocean” that features multiscale oceanic dynamical processes. Using principal component analysis (PCA), we investigate the variability of the sea surface chlorophyll-a concentration (SSC) and its bloom timing in the JES based on satellite remote sensing products spanning 1998–2019. The JES SSC exhibits strong seasonal variability and blooms twice annually. The spring bloom is induced under combined factors of increased photosynthetically active radiation (PAR), weakened wind speeds and sea ice melting, and terminated by the enhanced stratification. The fall bloom is induced by destratification and active dynamic processes (such as upwelling and front), and terminated by decreased PAR. The interannual variability of spring and fall bloom occur along the northwestern coast of the JES and in the deep Japan Basin, respectively. The positive SSC anomalies along the northwestern coast of the JES in spring is associated with more sea ice in the previous winter, weaker wind speed, and stronger stratification induced by the El Niño events. No significant relationship has been found between the fall bloom and the El Niño events. The bloom timing is controlled by the critical depth hypothesis. The initiation/termination timing of spring blooms has shifted earlier by 0.37/0.45 days, and the counterpart of fall blooms has shifted 0.49/1.28 days earlier per year. The duration and magnitude are independent with each other for spring bloom at interannual time scale. In contrast, they are positively correlated for fall bloom, because of both bloom timing and magnitude are dominated by active oceanic dynamical processes in fall. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea surface chlorophyll-a concentration (SSC) Japan/East Sea (JES) spring bloom fall bloom interannual variability Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
sea surface chlorophyll-a concentration (SSC) Japan/East Sea (JES) spring bloom fall bloom interannual variability Science Q General. Including nature conservation geographical distribution QH1-199.5 Dingqi Wang Guohong Fang Shumin Jiang Qinzeng Xu Guanlin Wang Zexun Wei Yonggang Wang Tengfei Xu Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing |
topic_facet |
sea surface chlorophyll-a concentration (SSC) Japan/East Sea (JES) spring bloom fall bloom interannual variability Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The Japan/East Sea (JES) is known as a mid-latitude “Miniature Ocean” that features multiscale oceanic dynamical processes. Using principal component analysis (PCA), we investigate the variability of the sea surface chlorophyll-a concentration (SSC) and its bloom timing in the JES based on satellite remote sensing products spanning 1998–2019. The JES SSC exhibits strong seasonal variability and blooms twice annually. The spring bloom is induced under combined factors of increased photosynthetically active radiation (PAR), weakened wind speeds and sea ice melting, and terminated by the enhanced stratification. The fall bloom is induced by destratification and active dynamic processes (such as upwelling and front), and terminated by decreased PAR. The interannual variability of spring and fall bloom occur along the northwestern coast of the JES and in the deep Japan Basin, respectively. The positive SSC anomalies along the northwestern coast of the JES in spring is associated with more sea ice in the previous winter, weaker wind speed, and stronger stratification induced by the El Niño events. No significant relationship has been found between the fall bloom and the El Niño events. The bloom timing is controlled by the critical depth hypothesis. The initiation/termination timing of spring blooms has shifted earlier by 0.37/0.45 days, and the counterpart of fall blooms has shifted 0.49/1.28 days earlier per year. The duration and magnitude are independent with each other for spring bloom at interannual time scale. In contrast, they are positively correlated for fall bloom, because of both bloom timing and magnitude are dominated by active oceanic dynamical processes in fall. |
format |
Article in Journal/Newspaper |
author |
Dingqi Wang Guohong Fang Shumin Jiang Qinzeng Xu Guanlin Wang Zexun Wei Yonggang Wang Tengfei Xu |
author_facet |
Dingqi Wang Guohong Fang Shumin Jiang Qinzeng Xu Guanlin Wang Zexun Wei Yonggang Wang Tengfei Xu |
author_sort |
Dingqi Wang |
title |
Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing |
title_short |
Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing |
title_full |
Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing |
title_fullStr |
Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing |
title_full_unstemmed |
Satellite-detected phytoplankton blooms in the Japan/East Sea during the past two decades: Magnitude and timing |
title_sort |
satellite-detected phytoplankton blooms in the japan/east sea during the past two decades: magnitude and timing |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.1065066 https://doaj.org/article/164eccf04bdc43318caac82921a0a35c |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Frontiers in Marine Science, Vol 9 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2022.1065066/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.1065066 https://doaj.org/article/164eccf04bdc43318caac82921a0a35c |
op_doi |
https://doi.org/10.3389/fmars.2022.1065066 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
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1766194549696233472 |