气候变化领域集成服务门户(CCPortal): Influences of Physical and Biogeochemical Variability of the Central Red Sea During Winter

CCPortal

DOI	10.1029/2020JC016714
	Influences of Physical and Biogeochemical Variability of the Central Red Sea During Winter
	Zarokanellos N.D.; Jones B.H.
发表日期	2021
ISSN	21699275
卷号	126 期号:3
英文摘要	The Central Red Sea (CRS) has been characterized by significant eddy activity throughout the year. Weakened wintertime stratification contributes to enhanced vertical exchange. In winter 2014–2015, an extended glider time series in the CRS captured this variability. Surface cooling and stronger winds resulted in deepening of the mixed layer (ML) to nearly 90 m. The vertical distributions of density and oxygen suggest that the ML did not penetrate the nutricline. However, mixing events dispersed phytoplankton from the deep CHL maximum (DCM) throughout the ML, increasing near-surface chlorophyll. Following the mixing events, a mesoscale cyclonic eddy (CE) grew and intensified, weakening stratification and decreasing the ML depth within the eddy. Where the CE interfaced with an adjacent anticyclonic eddy (AE), the CE DCM subducted beneath the shallower AE DCM leading to a local integrated chlorophyll maximum. Low salinity water containing relatively high chlorophyll and CDOM concentrations, originating from the Gulf of Aden, appeared in late winter. Mesoscale eddy activity resulted in a 160 m upward displacement of the nutricline to ∼60 m, well within the euphotic layer. Remote sensing imagery indicates that these eddies contribute to horizontal dispersion, including exchange between the open sea and coastal coral reefs. When the phytoplankton is distributed through the ML, clear diel variability was evident in the temporal CHL distribution. Because not all of the biogeochemical responses were apparent at the surface, sustained glider observations were essential to understand the temporal and spatial scales and their impact on these processes. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Central Red Sea; Gulf of Aden water; mesoscale eddies; physical and biogeochemical interactions; winter mixing
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186418
作者单位	Red Sea Research Center (RSRC), King Abdullah University of Science and Technology (KAUST), Biological and Environmental Sciences & Engineering Division (BESE), Bioscience Program, Thuwal, Saudi Arabia; Balearic Islands Coastal Observing and Forecasting System (SOCIB), Parc Bit, Edif. Naorte, Palma de Mallorca, Spain
推荐引用方式 GB/T 7714	Zarokanellos N.D.,Jones B.H.. Influences of Physical and Biogeochemical Variability of the Central Red Sea During Winter[J],2021,126(3).
APA	Zarokanellos N.D.,&Jones B.H..(2021).Influences of Physical and Biogeochemical Variability of the Central Red Sea During Winter.Journal of Geophysical Research: Oceans,126(3).
MLA	Zarokanellos N.D.,et al."Influences of Physical and Biogeochemical Variability of the Central Red Sea During Winter".Journal of Geophysical Research: Oceans 126.3(2021).