Seasonal responses of nutrient to hydrology and biology in the southern Yellow Sea

Guo, Congcong; Zhang, Guicheng; Sun, Jun; Leng, Xiaoyun; Xu, Wenzhe; Wu, Chao; Li, Xiaoqian; Pujari, Laxman

doi:10.1016/j.csr.2020.104207

Cited by 29 publications

(19 citation statements)

References 74 publications

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“…To identify and characterize sea-derived gaseous amines, ammonia, and sea-spray particulate aminium ions as well as secondary particulate aminium ions from continental transport in the atmospheres of China's marginal seas, we conducted two cruise campaigns: one over the Yellow and Bohai seas in China from 9 to 22 December 2019 (Campaign A) and another over the Eastern China and Yellow seas from 27 December 2019 to 16 January 2020 (Campaign B). Winter cruise campaigns provide great opportunities for observational studies due to the following: (1) higher concentrations of nutrients in the seas at lower sea surface water temperatures, which may favor higher primary production (Guo et al, 2020) and subsequently increase marine emissions of gaseous amines and/or aminium-containing seaspray aerosols; (2) periodically enhanced air-sea exchanges driven by the strong winter Asian monsoon every 4-10 d (Zhu et al, 2018); (3) periodically enhanced long-range transport of anthropogenic pollutants from continents to the seas, which may enhance the formation of secondary ammonium and aminium aerosols (Guo et al, 2016;Yu et al, 2016;Xie et al, 2018;Wang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Mapping gaseous dimethylamine, trimethylamine, ammonia, and their particulate counterparts in marine atmospheres of China's marginal seas – Part 1: Differentiating marine emission from continental transport

et al. 2021

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Abstract. To study sea-derived gaseous amines, ammonia, and primary particulate aminium ions in the marine atmosphere of China's marginal seas, an onboard URG-9000D Ambient Ion Monitor-Ion Chromatograph (AIM-IC, Thermo Fisher) was set up on the front deck of the R/V Dongfanghong-3 to semi-continuously measure the spatiotemporal variations in the concentrations of atmospheric trimethylamine (TMAgas), dimethylamine (DMAgas), and ammonia (NH3gas) along with their particulate matter (PM2.5) counterparts. In this study, we differentiated marine emissions of the gas species from continental transport using data obtained from 9 to 22 December 2019 during the cruise over the Yellow and Bohai seas, facilitated by additional short-term measurements collected at a coastal site near the Yellow Sea during the summer, fall, and winter of 2019. The data obtained from the cruise and coastal sites demonstrated that the observed TMAgas and protonated trimethylamine (TMAH+) in PM2.5 over the Yellow and Bohai seas overwhelmingly originated from marine sources. During the cruise, no significant correlation (P>0.05) was observed between the simultaneously measured TMAH+ and TMAgas concentrations. Additionally, the concentrations of TMAH+ in the marine atmosphere varied around 0.28±0.18 µg m−3 (average ± standard deviation), with several episodic hourly average values exceeding 1 µg m−3, which were approximately 1 order of magnitude larger than those of TMAgas (approximately 0.031±0.009 µg m−3). Moreover, there was a significant negative correlation (P<0.01) between the concentrations of TMAH+ and NH4+ in PM2.5. Therefore, the observed TMAH+ in PM2.5 was overwhelmingly derived from primary sea-spray aerosols. Using TMAgas and TMAH+ in PM2.5 as tracers for sea-derived basic gases and sea-spray particulate aminium ions, the values of non-sea-derived DMAgas, NH3gas, and non-sea-spray particulate DMAH+ in PM2.5 were estimated. The estimated average values of each species contributed 16 %, 34 %, and 65 % of the observed average concentrations for non-sea-derived DMAgas, NH3gas, and non-sea-spray particulate DMAH+ in PM2.5, respectively. Uncertainties remained in the estimations, as TMAH+ may decompose into smaller molecules in seawater to varying extents. The non-sea-derived gases and non-sea-spray particulate DMAH+ likely originated from long-range transport from the upwind continents based on the recorded offshore winds and increased concentrations of non-sea-salt SO42- (nss-SO42-) and NH4+ in PM2.5. The lack of a detectable increase in particulate DMAH+, NH4+, and nss-SO42- concentrations in several SO2 plumes did not support the secondary formation of particulate DMAH+ in the marine atmosphere.

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Section: Introductionmentioning

confidence: 99%

Mapping gaseous dimethylamine, trimethylamine, ammonia, and their particulate counterparts in marine atmospheres of China's marginal seas – Part 1: Differentiating marine emission from continental transport

et al. 2021

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“…The source of the newly colonized populations of L. brevicula on the artificial structures of the YRD was highly consistent with the recent discoveries about the coastal currents in the studied area (Wu et al., 2018 ). For decades, a southward coastal current, the Yellow Sea Coastal Current, was considered to exist in the inner southwestern Yellow Sea during the wintertime Eastern Asian Monsoon (Guan, 1984 ; Yuan & Hsueh, 2010 ), which were also widely accepted by marine ecologists and also molecular ecologists (Guo et al., 2020 ; Ni et al., 2017 ; Wang et al., 2020 ; Zhou, 2010 ). Considering the wintertime spawning season of L. brevicula and the 33.5°N as a boundary that restricts the gene flow from north to south, the long‐term hypothesis of the southward Yellow Sea Coastal Current was clearly not supported by our genetic evidence.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…However, controversy exists for the coast current in the inner southwestern Yellow Sea in winter. For decades, a southward coastal current, the Yellow Sea Coastal Current, was considered to exist in the southwestern Yellow Sea in wintertime Eastern Asian Monsoon (Guan, 1984 , 1994 ; Ichikawa & Beardsley, 2002 ), which was widely accepted by marine ecologist working in this area (Guo et al., 2020 ; Ni et al., 2017 ; Wang et al., 2020 ; Zhou, 2010 ). However, recent observed data on two nearby stations in the Subei coast water demonstrated that subtidal transport in the inner southwestern Yellow Sea is also northward in wintertime, which is opposite to the downwelling‐favorable winter monsoon (Wu et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Resolving the origins of invertebrate colonists in the Yangtze River Estuary with molecular markers: Implications for ecological connectivity

Xing

et al. 2021

Ecology and Evolution

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“…Several studies have investigated NO 3 − flux in the YS using a range of methods (Liu et al, 2003;Wu et al, 2019;Guo et al, 2020). Liu et al (2003) quantified nutrient fluxes using a single box model but did not consider the effect of currents and in situ biological processes (e.g., nitrification and NO 3 − uptake by phytoplankton).…”

Section: Introductionmentioning

confidence: 99%

Assessments of Nitrate Budgets in the Yellow Sea Based on a 3D Physical-Biogeochemical Coupled Model

et al. 2022

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Nitrate (NO3–) plays an important role in ecosystems and aquaculture in the Yellow Sea (YS). Sparse observational data suggest that ocean currents and nitrification are crucial to NO3– flux in the YS; however, a quantitative assessment of these fluxes has not yet been performed. This study investigates seasonal and spatial variations in NO3– flux via currents and biological processes in the YS from 2006 to 2019 using a physical-biogeochemical coupled model. The model results show that the current-driven fluxes exceeded biological processes in the eastern and central regions of the YS, unlike in the western and northern regions. Advection of NO3– in the YS is mainly driven by cyclonic circulation in summer and fall, and anticyclonic circulation in spring and winter. The Subei Coastal Current along the coast of China plays a primary role in net advective influx of NO3– to the YS year round. The NO3– influx by the Yellow Sea Warm Current along the lower layer of the southcentral YS is offset by outflux through wind-driven surface currents in winter. The southward movements of the Yellow Sea Bottom Cold Water in summer and the Korean Coastal Current in winter are major NO3– outfluxes to the East China Sea. In terms of biological processes, NO3– is mainly consumed by phytoplankton during the spring bloom and supplied through organic matter decomposition and nitrification. Net supply of NO3– by biological processes was the greatest in the southcentral YS where the Yellow Sea Bottom Cold Water is present.

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Seasonal responses of nutrient to hydrology and biology in the southern Yellow Sea

Cited by 29 publications

References 74 publications

Mapping gaseous dimethylamine, trimethylamine, ammonia, and their particulate counterparts in marine atmospheres of China's marginal seas – Part 1: Differentiating marine emission from continental transport

Mapping gaseous dimethylamine, trimethylamine, ammonia, and their particulate counterparts in marine atmospheres of China's marginal seas – Part 1: Differentiating marine emission from continental transport

Resolving the origins of invertebrate colonists in the Yangtze River Estuary with molecular markers: Implications for ecological connectivity

Assessments of Nitrate Budgets in the Yellow Sea Based on a 3D Physical-Biogeochemical Coupled Model

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