气候变化领域集成服务门户(CCPortal): Relaxation of Wind Stress Drives the Abrupt Onset of Biological Carbon Uptake in the Kerguelen Bloom: A Multisensor Approach

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DOI	10.1029/2019GL085992
	Relaxation of Wind Stress Drives the Abrupt Onset of Biological Carbon Uptake in the Kerguelen Bloom: A Multisensor Approach
	Pellichero V.; Boutin J.; Claustre H.; Merlivat L.; Sallée J.-B.; Blain S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	We deployed sensors for physical and biogeochemical measurements on one Eulerian mooring and two Lagrangian biogeochemical Argo floats on the Kerguelen Plateau. High temporal and vertical resolution measurements revealed an abrupt shoaling of both the mixed-layer depth and mixing-layer depth. The sudden stratification was concomitant with the start of significant biological activity detected by chlorophyll-a accumulation, oxygen oversaturation, and dissolved inorganic carbon drawdown. The net community production computed in the mixing-layer during the onset period of 9 days was 119 ± 7 mmol·m−2·day−1. While it is generally admitted that bloom initiation is mostly driven by the onset of positive heat fluxes, our results suggest that this is not a sufficient condition. Here we report that the decrease in the depth over which wind mixes the upper layer drives the initiation of the bloom. These results suggest that future atmospheric changes in Southern Ocean could impact the phenology of the blooms. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Bioactivity; Biogeochemistry; Carbon; Dissolved oxygen; Forestry; Mixing; Atmospheric changes; Biogeochemical; Dissolved inorganic carbon; Kerguelen plateau; Mixed layer depths; Net community productions; Oversaturation; Vertical resolution; Blooms (metal); algal bloom; biogeochemical cycle; biological uptake; chlorophyll a; dissolved inorganic carbon; heat flux; net primary production; nutrient uptake; phenology; stratification; wind stress; Indian Ocean; Kerguelen Plateau; Southern Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170385
作者单位	CNRS, IRD, MNHN, UMR 7159, Laboratoire d'Océanographie et du Climat: Expérimentations et Approches Numériques, LOCEAN-IPSL, Sorbonne Université, Paris, France; CNRS, UMR 7093, Laboratoire d'Océanographie de Villefranche, LOV, Sorbonne Université, Paris, France; CNRS, UMR 7621, Laboratoire d'Océanographie MICrobienne, LOMIC, Sorbonne Université, Paris, France
推荐引用方式 GB/T 7714	Pellichero V.,Boutin J.,Claustre H.,et al. Relaxation of Wind Stress Drives the Abrupt Onset of Biological Carbon Uptake in the Kerguelen Bloom: A Multisensor Approach[J],2020,47(9).
APA	Pellichero V.,Boutin J.,Claustre H.,Merlivat L.,Sallée J.-B.,&Blain S..(2020).Relaxation of Wind Stress Drives the Abrupt Onset of Biological Carbon Uptake in the Kerguelen Bloom: A Multisensor Approach.Geophysical Research Letters,47(9).
MLA	Pellichero V.,et al."Relaxation of Wind Stress Drives the Abrupt Onset of Biological Carbon Uptake in the Kerguelen Bloom: A Multisensor Approach".Geophysical Research Letters 47.9(2020).