Long-term simulations for ocean energy off the Brazilian coast

Kirinus, Eduardo de Paula; Oleinik, Phelype Haron; Costi, Juliana; Marques, Wiliam Correa

doi:10.1016/j.energy.2018.08.080

Cited by 25 publications

(9 citation statements)

References 69 publications

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“…Yet, the CFSv2 overpredicted the entire time-series. In a similar investigation, [80] validated the wave heights at the very same set of oceanic buoys in a longer period of simulations, where the RMSE was no lower than 0.46 m in the Rio Grande Buoy and 0.57 m in the Itajai buoy, even though a hybrid oceanic model was employed, using the CFSR climate model. Likewise, [85] presented a similar RMSE order of magnitude (maximum values of 0.58 m for wave heights higher than 1 m) in a local long-term set of simulations validated at 24 • S and forced by an ECMWF climate model.…”

Section: Local Scale Assessmentmentioning

confidence: 89%

“…Lastly, it should be mentioned that the present study does not yet consider the effects of river discharge, rainfall, infragravity waves, wave run-up, as well as depth-dependent processes, such as velocity gradients due to density, that might vary according to different ocean temperature and salinity. According to [80], the South Brazilian Bight (extending from 23 • S to 28 • S) is highly influenced by the Brazil Current. Moreover, the spatial variability of currents confluence (i.e., Brazil-Malvinas) might as well influence the circulation in the Southern Brazilian Shelf [81].…”

Section: Total Water Levelsmentioning

confidence: 99%

“…In a fetch of 521 km between the Rio Grande and Santos buoys ( Figure 12F,G), the wave maximum values show an increase of approximately 20% after 9 hours. The authors of [80] stated that the large meteorological variability on the Southwest Atlantic Ocean prevents short-term simulations to fully comprehend the ocean waves' behavior patterns, suggesting the need for long-term simulations (over 10 years), which cannot be completely validated as a consequence of insufficient wave data. However, a reanalysis based dataset is available as an alternative to describe wave climate along the Brazilian coast [27,84] as well as a long-term-wave database at local scales, e.g., [85].…”

Section: Wavesmentioning

confidence: 99%

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Hydrodynamic and Waves Response during Storm Surges on the Southern Brazilian Coast: A Hindcast Study

Lima

Khalid

Miesse

et al. 2020

Water

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The Southern Brazilian Coast is highly susceptible to storm surges that often lead to coastal flooding and erosive processes, significantly impacting coastal communities. In addition, climate change is expected to result in expressive increases in wave heights due to more intense and frequent storms, which, in conjunction with sea-level rise (SLR), has the potential to exacerbate the impact of storm surges on coastal communities. The ability to predict and simulate such events provides a powerful tool for coastal risk reduction and adaptation. In this context, this study aims to investigate how accurately storm surge events can be simulated in the Southwest Atlantic Ocean employing the coupled ADCIRC+SWAN hydrodynamic and phase-averaged wave numerical modeling framework given the significant data scarcity constraints of the region. The model’s total water level (TWL) and significant wave height (Hs) outputs, driven by different sources of meteorological forcing, i.e., the Fifth Generation of ECMWF Atmospheric Reanalysis (ERA 5), the Climate Forecast System Version 2 (CFSv2), and the Global Forecast System (GFS), were validated for three recent storm events that affected the coast (2016, 2017, and 2019). In order to assess the potentially increasing storm surge impacts due to sea-level rise, a case study was implemented to locally evaluate the modeling approach using the most accurate model setup for two 2100 SLR projections (RCP 4.5 and 8.5). Despite a TWL underestimation in all sets of simulations, the CFSv2 model stood out as the most consistent meteorological forcing for the hindcasting of the storm surge and waves in the numerical model, with an RMSE range varying from 0.19 m to 0.37 m, and an RMSE of 0.56 m for Hs during the most significant event. ERA5 was highlighted as the second most accurate meteorological forcing, while adequately simulating the peak timings. The SLR study case demonstrated a possible increase of up to 82% in the TWL during the same event. Despite the limitations imposed by the lack of continuous and densely distributed observational data, as well as up to date topobathymetric datasets, the proposed framework was capable of expanding TWL and Hs information, previously available for a handful of gauge stations, to a spatially distributed and temporally unlimited scale. This more comprehensive understanding of such extreme events represents valuable knowledge for the potential implementation of more adequate coastal management and engineering practices for the Brazilian coastal zone, especially under changing climate conditions.

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Section: Local Scale Assessmentmentioning

confidence: 89%

Section: Total Water Levelsmentioning

confidence: 99%

Section: Wavesmentioning

confidence: 99%

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Hydrodynamic and Waves Response during Storm Surges on the Southern Brazilian Coast: A Hindcast Study

Lima

Khalid

Miesse

et al. 2020

Water

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“…In this way, it was possible to verify a good correlation between the modeled and measured data, verifying the reliability of TOMAWAC model for the purposes of this study. Besides, TOMAWAC model was also validated along the Brazilian coast in the studies of Kirinus et al (2018), Guimarães et al (2019) and Trombetta et al (2020).…”

Section: Validationmentioning

confidence: 99%

Spatiotemporal Variability of Longshore Sediment Transport on the Brazilian Coast

Trombetta¹,

Marques²

2020

Preprint

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The lack of planning and management regarding the transport of sediments along the coast can alter the existing equilibrium in coastal regions, causing or accelerating erosive processes and resulting in economic and environmental damage. Thus, it is important that the characteristics of the coastal drift be investigated, serving as source of information for future projects involving the coastal environment management. Within this context, the present work aims to identify the annual sediment transport averages along the Brazilian coast, the dominant direction of the coastal drift and its spatial variability. For this, a wind-generated wave modeling was considered, with 37 years of data (1979 to 2015), as well as four sediment transport formulations. For the spatiotemporal variability, the analysis of wavelets was applied, relating the effect of cycles of variability over the behavior of longshore sediment transport. The results showed that the largest annual volumes of sediment transport occurred in the northeastern Region of Brazil, reaching approximately 850000 m3/year-1. On the other hand, the smallest transport averages occurred in the southern region, in the state of Santa Catarina, reaching the value of 13497 m3/year-1. In the northeast region, annual and interannual cycles were more frequent and more energetic than in the southern Region, where short cycles presented similar importance to longer cycles, during 37 years of the study. However, in the overall context of the analysis, the long period cycles are more significant for longshore sediment transport, since this is a long term process. In this way, the present article contributes with information on longshore sediment transport, highlighting the annual means and the dominant drift, and deals with important questions about the influence of cycles of variability in the study region, emphasizing the importance of longer period events for the control of sedimentary transport in the Brazilian coast.

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“…De acordo MÖLLER (1996), o efeito do vento é importante na circulação de água na região de estudo, pois a dimensão e à orientação do eixo longitudinal da lagoa (nordestesudoeste), coincide com a direção predominante dos ventos. O regime de ventos dominante na região é o de nordeste, associado ao anticiclone sobre o Oceano Atlântico (KIRINUS, 2018apud PARISE, 2009. Durante o verão e a primavera possui ventos de leste (influência da brisa do mar), enquanto que no outono e inverno ventos de sudoeste (sistemas frontais).…”

Section: Introductionunclassified

Forçantes Externas Dominantes Nos Processos Hidrodinâmicos Na Região Do Saco Da Mangueira Na Lagoa Dos Patos-Rs

Leal¹,

Lopes²,

Monteiro³

et al. 2019

MUNDI ETG

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O Saco da Mangueira é uma enseada semifechada com acesso a região estuarina daLagoa dos Patos-RS. Esse sistema possui uma área de 227km2 e recebe pequenas descargas deágua doce provenientes dos arroios Vieira e Simão, porém o maior aporte de água que esta enseadarecebe provém do estuário da Lagoa dos Patos. Nesta região são realizadas várias atividades,como pesca artesanal de camarão e atividades de lazer. A análise da hidrodinâmica nesta regiãoé importante, pois a circulação do fluxo de água entre a enseada e o estuário promovem a entrada denutrientes e evitam condições anóxicas no ambiente. O objetivo principal deste estudo é investigara hidrodinâmica do local usando o modelo de simulação numérica TELEMAC-3D validado comdados medidos em campo. Os resultados demonstram que a dinâmica do Saco da Mangueira estáfortemente relacionada com a dinâmica estuarina, sendo controlada pelo efeito não-local do vento.A elevação do nível do mar e os gradientes de pressão entre os pontos analisados proporcionam adireção do fluxo de água, associados aos ventos, ocasionando eventos de enchente de água salgada(ventos de sudoeste) e vazão de água doce (ventos de nordeste) no Saco da Mangueira.

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Long-term simulations for ocean energy off the Brazilian coast

Cited by 25 publications

References 69 publications

Hydrodynamic and Waves Response during Storm Surges on the Southern Brazilian Coast: A Hindcast Study

Hydrodynamic and Waves Response during Storm Surges on the Southern Brazilian Coast: A Hindcast Study

Spatiotemporal Variability of Longshore Sediment Transport on the Brazilian Coast

Forçantes Externas Dominantes Nos Processos Hidrodinâmicos Na Região Do Saco Da Mangueira Na Lagoa Dos Patos-Rs

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