2018
DOI: 10.1016/j.scitotenv.2017.08.303
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Spatiotemporal evolution of the chlorophyll a trend in the North Atlantic Ocean

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Cited by 13 publications
(10 citation statements)
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“…The eSPNA is sensitive to natural climate variability and human-induced global change affecting both gyre-scale and overturning circulation (Smeed et al, 2018;Yashayaev et al, 2015) and primary production (Boyce et al, 2010;Zhang et al, 2018), which are intimately linked in this region (Johnson et al, 2013;Zhang et al, 2018). The DON and nitrate budgets presented here show that this region does not only act as a passive belt transporting DOM originated in the subtropics, but it also behaves as a net autotrophic system, with a net production of DON at the expense of net nitrate uptake.…”
Section: Discussionmentioning
confidence: 81%
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“…The eSPNA is sensitive to natural climate variability and human-induced global change affecting both gyre-scale and overturning circulation (Smeed et al, 2018;Yashayaev et al, 2015) and primary production (Boyce et al, 2010;Zhang et al, 2018), which are intimately linked in this region (Johnson et al, 2013;Zhang et al, 2018). The DON and nitrate budgets presented here show that this region does not only act as a passive belt transporting DOM originated in the subtropics, but it also behaves as a net autotrophic system, with a net production of DON at the expense of net nitrate uptake.…”
Section: Discussionmentioning
confidence: 81%
“…The lower-limb waters enriched with relatively bioavailable DOM originated in the eSPNA are subsequently transported southward toward the Labrador Sea and the temperate North Atlantic, with potential impacts for the basin-scale microbial remineralization and biogeochemistry. The eSPNA is sensitive to natural climate variability and human-induced global change affecting both gyre-scale and overturning circulation (Smeed et al, 2018;Yashayaev et al, 2015) and primary production (Boyce et al, 2010;Zhang et al, 2018), which are intimately linked in this region (Johnson et al, 2013;Zhang et al, 2018). Understanding these interactions, and particularly the role of organic nutrients, is key to predict the evolution of the nitrogen cycle in the North Atlantic in the forthcoming decades.…”
Section: Discussionmentioning
confidence: 99%
“…Os padrões de baixa frequência em larga escala apresentaram teleconexões na escala decadal com a física e biogeoquímica regional. Zhang et al (2018) High Nutrient Low Chlorophyll (HNLC), isto é, é uma região que tem alta concentração de nutrientes, entretanto não tem a concentração de clorofila esperada. O motivo disto ainda é debatido dentro da comunidade científica, mas acredita-se que isto ocorra por limitação de ferro (Martin, Gordon, and Fitzwater 1990).…”
Section: Relação Da Moc Na Clorofilaunclassified
“…Outro ponto passível de nota é que analisando esta Figura podemos perceber que as diferentes escalas não se influenciam espacialmente, mostrando o padrão espacial em diferentes frequências de maneira independente. O MEEMD já foi utilizado diversas vezes nos mais variados campos da ciência, atuando por exemplo, desde ciências da saúde (Pachori 2008) até processamento de som em vozes (Schlotthauer, Torres, and Rufiner 2009), em especial ao que se refere esse estudo, já foi utilizado em ciências atmosféricas e oceanográficas (Ji et al 2014;Zhang et al 2018;Franzke 2014;Hu et al 2012;Zhu, Huang, and Wu 2012;Misra et al 2014) Neste estudo o MEEMD foi aplicado aos dados de clorofila, nitrato integrado e PAR, se utilizando da componente residual como evolução espaço-temporal da variável. Para se compreender a evolução espaço-temporal da clorofila, a anomalia das tendências da clorofila-a foi calculada.…”
Section: Multi-dimensional Ensemble Empirical Mode Decompositionunclassified
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