Evolution of satellite derived chlorophyll-a trends in the Bohai and Yellow Seas during 2002–2018: Comparison between linear and nonlinear trends

Wang, Yueqi; Tian, Xinpeng; Gao, Zhiqiang

doi:10.1016/j.ecss.2021.107449

Cited by 17 publications

(11 citation statements)

References 120 publications

(185 reference statements)

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“…Sensitivity experiment further demonstrated that the surface total [Chl a ] in bay head was enhanced throughout the year due to climate change (Figure 10a). A similar variation was observed in the modified satellite [Chl a ] during the past two decades (Wang, Tian, & Gao, 2021). In contrast, the phytoplankton community (Figure 10b) or seawater temperature (not shown) had little response to climate change.…”

Section: Resultssupporting

confidence: 77%

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Marine Dimethyl Sulfide Fluxes in the Yellow and East China Seas: Scenario Variation During the 1980s–2090s and Its Drivers

2023

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Shedding light on the response of oceanic dimethyl sulfide flux (FDMS) on the sea shelf to multi‐pressures (intensified terrigenous nutrient inputs and climate change) is of great importance for regional aerosol budget. Here, we designed 4‐group experiments in scenario (the 1980s, 2010s, 2050s, and 2090s) for the Yellow and East China seas (YECS) based on climate change signals gained from CMIP6 and a 3‐dimension biophysical and geochemical model. Results show that the climatological annual mean of YECS's FDMS will rise from ∼6 μmol m−2 day−1 in the 1980s to >9 μmol m−2 day−1 in the 2090s under Shared Socioeconomic Pathway (SSP) 2−4.5/5−8.5 scenario, and with multi‐pressures, the FDMS peak in the 2050s is one season earlier when compared to that in the 1980s. The elevated terrigenous inputs affect the phytoplankton biomass and/or community on the inner shelf, leading to the rise and phenology change in the YECS's FDMS between the1980s and 2010s, while climate change has little impact. The influence of climate change on the FDMS is projected to increase in the 2050s; climate change will change seasonal pattern of the FDMS on the central part (middle and outer shelves) of East China Sea (CECS) under every SSP scenario. Thereinto, wind change exerts a crucial role, it will enhance summertime offshore transport and, accordingly, stimulate phytoplankton growth in summer changing the phenology of FDMS on the CECS.

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Section: Resultssupporting

confidence: 77%

“…1. (Wang, Tian, & Gao, 2021). In contrast, the phytoplankton community (Figure 10b) or seawater temperature (not shown) had little response to climate change.…”

Section: Controlling Mechanism Of the Scenario Variation In The F Dmsmentioning

confidence: 89%

Marine Dimethyl Sulfide Fluxes in the Yellow and East China Seas: Scenario Variation During the 1980s–2090s and Its Drivers

2023

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“…Based on ensemble empirical mode decomposition analysis, Wang et al. (2021) found that nonlinear Chl‐a trends are controlled by the status of eutrophication in the central YS, with an increase in Chl‐a during 2002–2014 and a decrease in Chl‐a from 2014 to 2018, which is contrary to the interannual variations in Z sd (Figure 7b). For the central YS, the optical properties at the surface are dominated by organic phytoplankton particles except for in the winter months (Chen et al., 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Eutrophication has been proposed by many researchers to dominate the long‐term phytoplankton dynamics in the coastal waters of the Eastern China Seas (e.g., He et al., 2013; Liu & Wang, 2013; Wang et al., 2021). Both PC2 of the second EOF mode and Figure 14c show a significant positive Chl‐a trend in the central YS and ECS during the study period.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the significant trends of Chl-a are in accordance with those of Z sd in the central YS and ECS on a pixel-by-pixel basis (Figures 3d and 14c). Due to the rapid development of China's economy, the coastal eutrophication of the China Seas intensified rapidly from the end of the 1980s to the 2010s, after which the trend of eutrophication seems to have stabilized (Wang et al, 2018(Wang et al, , 2021. The central YS and ECS are far from sources of land-sourced nutrients, which leads to a low response speed to coastal eutrophication.…”

Section: Drivers Of the Long-term Z Sd Trends In The Eastern China Seasmentioning

confidence: 99%

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Multiple Timescale Variations in Water Transparency in the Eastern China Seas over the Period 1997–2019

et al. 2023

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The detection of water transparency (Zsd) changes over multiple timescales is an important task that has wide implications from water quality to climate change research. However, to date, the understanding of Zsd variations and their driving factors in the Eastern China Seas is fairly limited. Using the Data Interpolating Empirical Orthogonal Functions (DINEOF) method and a semi‐analytic algorithm, monthly cloud‐free Zsd products over the period 1997–2019 are retrieved from the European Space Agency Ocean Color Climate Change Initiative datasets. Significant Zsd variations on seasonal, interannual, and long‐term timescales, as well as their spatial discrepancies, are quantified in the Eastern China Seas. The first EOF mode of Zsd accounts for 57.46% of the total variance, which is dominated by a seasonal cycle in response to seasonal changes in oceanic and atmospheric factors (e.g., surface winds, sea surface temperature and ocean stratification). The second and third EOF modes are likely associated with seasonal phytoplankton blooms and ocean circulations, respectively. Factors that affect the interannual variation in Zsd, including sea surface temperature, wind speed, river discharge, and the Oceanic Niño Index, are quantitatively evaluated. The long‐term trends suggest different potential driving forces for the Zsd patterns at a regional scale, such as climate‐driven increased sea surface temperatures, weakened surface winds, reduced sediment discharge, and eutrophication of coastal waters. Overall, this study presents the first comprehensive investigation of Zsd variations in the Eastern China Seas at multiple timescales and an analysis of their underlying physical and environmental drivers.

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The Response of Oceanic Dimethylsulfide Fluxes Off the Chinese Coastal Waters to Altered Changjiang (Yangtze) Nutrient Inputs

Shen

Zhao

Wei

2023

Estuaries and Coasts

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Evolution of satellite derived chlorophyll-a trends in the Bohai and Yellow Seas during 2002–2018: Comparison between linear and nonlinear trends

Cited by 17 publications

References 120 publications

Marine Dimethyl Sulfide Fluxes in the Yellow and East China Seas: Scenario Variation During the 1980s–2090s and Its Drivers

Marine Dimethyl Sulfide Fluxes in the Yellow and East China Seas: Scenario Variation During the 1980s–2090s and Its Drivers

Multiple Timescale Variations in Water Transparency in the Eastern China Seas over the Period 1997–2019

The Response of Oceanic Dimethylsulfide Fluxes Off the Chinese Coastal Waters to Altered Changjiang (Yangtze) Nutrient Inputs

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