Water temperature variability analysis along the Espinheiro Channel

Mestrado em Meteorologia e Oceanografia FísicaO canal do Espinheiro é um dos quatro principais canais da Ria de Aveiro, fazendo a ligação entre o Rio Vouga e o Oceano Atlântico. Nesta zona é onde se dá a mistura entre a água salgada proveniente do oceano e a água doce de origem fluvial. Para fazer a monitorização da temperatura da água no Canal do Espinheiro foi utilizada uma nova tecnologia que consiste num cabo de fibra óptica longitudinal de 10 km de extensão, com 18 sensores de temperatura espaçados de 500 m, desde a embocadura até à foz do Rio Vouga. Resultados de um ano de monitorização da temperatura da água permitiram estudar a sua variabilidade espacial e temporal em função de dois forçamentos principais: maré e condições meteorológicas. A evolução temporal longitudinal da temperatura da água foi estudada, tendo sido aplicadas técnicas matemáticas, tais como: análise espectral, análise espectral cruzada e funções empíricas ortogonais (EOFs). A análise espectral mostra picos de maior energia que surgem nas frequências semi-diurnas e diurnas. Estas frequências podem estar relacionadas com a variação diurna da temperatura do ar e da maré, mostrando a importância das variáveis meteorológicas na modulação da temperatura da água em regiões pouco profundas. A análise espectral cruzada permitiu avaliar o desfasamento temporal entre a temperatura da água e do ar, que varia conforme a profundidade do local. Também permitiu observar que a maré tem uma grande influência na distribuição da temperatura da água, nomeadamente perto da embocadura da laguna. As EOFs mostram que a variabilidade da temperatura da água pode ser explicada maioritariamente pela primeira componente, que está relacionada com a variação anual da temperatura do ar. Os resultados mostram que os dois forçamentos principais (maré e condições meteorológicas) determinam a temperatura da água no interior do canal do Espinheiro. Verifica-se ainda que a distribuição da temperatura da água é influenciada também pela variação sazonal das condições meteorológicas e pelas variações de profundidade do canal, que apresenta zonas de reduzida profundidade. ABSTRACT: The Espinheiro channel is one of the four main branches of Ria de Aveiro, establishing the connection between the Vouga River and the Atlantic Ocean. This zone is where occurs the mixing between the salt water from the ocean and the freshwater from fluvial origin. In order to monitoring the water temperature in the Espinheiro channel a new technology was used, consisting on an optical-fibre longitudinal cable 10 km long with 18 temperature sensors separated by 500 m, from the mouth of the lagoon to the mouth of Vouga River. Results of a one year monitoring of water temperature permitted to study its spatial and temporal variability in terms of two major forcing: tides and meteorological conditions. The temporal evolution of the longitudinal water temperature was studied, and mathematical techniques, such as spectral analysis, cross-spectral analysis and Empirical Orthogonal Functions (EOFs) were applied to the data. The spectral analysis shows high energy peaks in both semidiurnal and diurnal frequencies. These frequencies may be related to the daily variation and tidal forcing, demonstrating the importance of the meteorological variables in the modulation of the water temperature in shallow areas. The cross-spectral analysis permitted to evaluate the time lag between the water and air temperature, which varies depending on the local depth. It also permitted to observe that the tide has a great influence on the water temperature distribution, particularly near the mouth of the lagoon. EOFs show that the variability of the water temperature can be explained by the first component, which is closely related to the annual variation of the air temperature. The results show the importance of the two major forcings (tides and meteorological conditions) that determine the water temperature within the Espinheiro channel. It can also be observed that the water temperature distribution is also influenced by the seasonal variation of meteorological conditions and by the channel’s depth variation, which presents very shallow areas

Modelação da intrusão da pluma do rio Minho nas rias baixas

Doutoramento em Ciências do Mar e do AmbienteThe Minho River, situated 30 km south of the Rias Baixas is the most important freshwater source flowing into the Western Galician Coast (NW of the Iberian Peninsula). This discharge is important to determine the hydrological patterns adjacent to its mouth, particularly close to the Galician coastal region. The buoyancy generated by the Minho plume can flood the Rias Baixas for long periods, reversing the normal estuarine density gradients. Thus, it becomes important to analyse its dynamics as well as the thermohaline patterns of the areas affected by the freshwater spreading. Thus, the main aim of this work was to study the propagation of the Minho estuarine plume to the Rias Baixas, establishing the conditions in which this plume affects the circulation and hydrographic features of these coastal systems, through the development and application of the numerical model MOHID. For this purpose, the hydrographic features of the Rias Baixas mouths were studied. It was observed that at the northern mouths, due to their shallowness, the heat fluxes between the atmosphere and ocean are the major forcing, influencing the water temperature, while at the southern mouths the influence of the upwelling events and the Minho River discharge were more frequent. The salinity increases from south to north, revealing that the observed low values may be caused by the Minho River freshwater discharge. An assessment of wind data along the Galician coast was carried out, in order to evaluate the applicability of the study to the dispersal of the Minho estuarine plume. Firstly, a comparative analysis between winds obtained from land meteorological stations and offshore QuikSCAT satellite were performed. This comparison revealed that satellite data constitute a good approach to study wind induced coastal phenomena. However, since the numerical model MOHID requires wind data with high spatial and temporal resolution close to the coast, results of the forecasted model WRF were added to the previous study. The analyses revealed that the WRF model data is a consistent tool to obtain representative wind data near the coast, showing good results when comparing with in situ wind observations from oceanographic buoys. To study the influence of the Minho buoyant discharge influence on the Rias Baixas, a set of three one-way nested models was developed and implemented, using the numerical model MOHID. The first model domain is a barotropic model and includes the whole Iberian Peninsula coast. The second and third domains are baroclinic models, where the second domain is a coarse representation of the Rias Baixas and adjacent coastal area, while the third includes the same area with a higher resolution. A bi-dimensional model was also implemented in the Minho estuary, in order to quantify the flow (and its properties) that the estuary injects into the ocean. The chosen period for the Minho estuarine plume propagation validation was the spring of 1998, since a high Minho River discharge was reported, as well as favourable wind patterns to advect the estuarine plume towards the Rias Baixas, and there was field data available to compare with the model predictions. The obtained results show that the adopted nesting methodology was successful implemented. Model predictions reproduce accurately the hydrodynamics and thermohaline patterns on the Minho estuary and Rias Baixas. The importance of the Minho river discharge and the wind forcing in the event of May 1998 was also studied. The model results showed that a continuous moderate Minho River discharge combined with southerly winds is enough to reverse the Rias Baixas circulation pattern, reducing the importance of the occurrence of specific events of high runoff values. The conditions in which the estuarine plume Minho affects circulation and hydrography of the Rias Baixas were evaluated. The numerical results revealed that the Minho estuarine plume responds rapidly to wind variations and is also influenced by the bathymetry and morphology of the coastline. Without wind forcing, the plume expands offshore, creating a bulge in front of the river mouth. When the wind blows southwards, the main feature is the offshore extension of the plume. Otherwise, northward wind spreads the river plume towards the Rias Baixas. The plume is confined close to the coast, reaching the Rias Baixas after 1.5 days. However, for Minho River discharges higher than 800 m3 s-1, the Minho estuarine plume reverses the circulation patterns in the Rias Baixas. It was also observed that the wind stress and Minho River discharge are the most important factors influencing the size and shape of the Minho estuarine plume. Under the same conditions, the water exchange between Rias Baixas was analysed following the trajectories particles released close to the Minho River mouth. Over 5 days, under Minho River discharges higher than 2100 m3 s-1 combined with southerly winds of 6 m s-1, an intense water exchange between Rias was observed. However, only 20% of the particles found in Ria de Pontevedra come directly from the Minho River. In summary, the model application developed in this study contributed to the characterization and understanding of the influence of the Minho River on the Rias Baixas circulation and hydrography, highlighting that this methodology can be replicated to other coastal systems.O Rio Minho, situado a 30 km a sul das Rias Baixas, é o rio mais importante que desagua na costa ocidental Galega (NO da Península Ibérica). A descarga da água doce proveniente deste rio é importante para a determinação dos padrões hidrológicos adjacentes à sua foz, particularmente perto das regiões costeiras galegas. Esta água doce pode inundar as Rias Baixas por períodos prolongados, invertendo a distribuição normal de densidade. Deste modo, é fundamental caracterizar a dinâmica da pluma do Rio Minho, assim como os padrões termohalinos das áreas afetadas pela sua dispersão. Assim, os principais objetivos deste trabalho consistiram no estudo da propagação da pluma estuarina do Minho em direção às Rias Baixas, e na deteção das condições nas quais esta afeta a circulação e as características hidrográficas destes sistemas costeiros, através do desenvolvimento e aplicação do modelo numérico MOHID. Com este propósito avaliaram-se inicialmente as características hidrográficas das embocaduras das Rias Baixas. Verificou-se então que, no caso das embocaduras norte, devido à sua reduzida profundidade, os fluxos de calor entre a atmosfera e o oceano são o forçamento principal que determina a temperatura da agua, enquanto que nas embocaduras sul os eventos de afloramento costeiro e a descarga de água doce são os fatores determinantes mais frequentes. Observou-se ainda um aumento de salinidade de sul para norte, o que indica que os menores valores detetados poderão ser explicados pela descarga de água doce proveniente do Rio Minho. Seguidamente efetuou-se uma avaliação de dados de vento na costa Galega, com o objetivo de verificar a sua aplicabilidade no estudo da dispersão da pluma estuarina do Minho. Inicialmente compararam-se ventos medidos ao longo da costa em estações meteorológicas terrestres, com ventos medidos ao largo pelo satélite QuikSCAT. Esta análise permitiu estabelecer que os dados do satélite são uma boa aproximação no estudo de fenómenos costeiros induzidos pelo vento. No entanto, visto que para forçar o modelo numérico MOHID são necessários dados de vento com grande resolução espácio-temporal perto da costa, acrescentou-se ao estudo anterior dados resultantes de simulações de um modelo de previsão (WRF). Da comparação com os dados provenientes de boias oceanográficas, conclui-se que a melhor base de dados para representação do vento perto da costa provém do modelo WRF. Para efetuar o estudo da influência da pluma estuarina do Minho nas Rias Baixas, foi desenvolvido e implementado um sistema de modelação integrado de três níveis encaixados, baseado na utilização do modelo numérico MOHID. O primeiro domínio é um modelo de maré barotrópico, englobando toda a costa da Península Ibérica. O segundo e o terceiro domínios são modelos baroclínicos tridimensionais, sendo o segundo uma representação grosseira das Rias Baixas e da costa adjacente, enquanto que o terceiro domínio inclui a mesma área com maior resolução. Neste âmbito, foi também implementado em modo 2D um modelo para o estuário do Minho, de forma a quantificar o fluxo (e as suas propriedades) que o estuário injeta no oceano. Devido à disponibilidade de dados foi escolhido o período de maio de 1998 para a validação da implementação numérica desenvolvida, efetuando a simulação da propagação da pluma estuarina do Minho para este período. Note-se que durante esta época foi detetada uma descarga elevada do Rio Minho, bem como ventos favoráveis à dispersão da pluma em direção as Rias Baixas. Os resultados obtidos mostraram que a metodologia de modelos encaixados foi implementada com sucesso, uma vez que os modelos reproduzem com precisão aceitável os padrões hidrodinâmicos e termohalinos do estuário do Minho e das Rias Baixas. Também foi avaliada a importância da descarga do Rio Minho e do vento no evento de maio de 1998. Os resultados revelaram que uma descarga moderada e contínua combinada com ventos de sul é suficiente para inverter o padrão de circulação das Rias Baixas, reduzindo a importância da existência de eventos específicos de elevado caudal. No âmbito do objetivo princial deste estudo, foram avaliadas as condições nas quais a pluma estuarina do Minho afeta a circulação e hidrografia das Rias Baixas. Os resultados numéricos indicaram que a dispersão da pluma estuarina do Minho responde rapidamente as variações do vento e às variações de batimetria e morfologia da linha de costa. Sem vento, a pluma expande-se para o largo, criando um bojo em frente da embocadura do rio. Sob condições de vento de norte, a pluma estende-se numa maior dimensão para o largo. Por outro lado, sob condições de vento de sul, a pluma fica confinada junto à costa, chegando às Rias Baixas ao fim de um dia e meio. No entanto, para descargas do Rio Minho superiores a 800 m3 s-1, a pluma estuarina do Minho inverte os padrões de circulação das Rias Baixas. Verificou-se também que a variabilidade do vento e da descarga do Rio Minho são os fatores que mais influenciam o tamanho e forma da pluma. Sob as mesmas condições analisou-se a troca de água nas Rias Baixas seguindo a trajetória de partículas lancadas perto da embocadura do estuário do Minho. Para descargas do Rio Minho superiores a 2100 m3 s-1 combinadas com ventos de sul de 6 m s-1 e numa escala superior a cinco dias, observou-se uma intensa troca de água entre as Rias. Cerca de 20% das partículas detetadas na Ria de Pontevedra provêm diretamente do Rio Minho. Em suma, a aplicação do modelo desenvolvido neste trabalho contribuiu para o conhecimento da influencia do Rio Minho na circulação e hidrografia das Rias Baixas, evidenciando que esta metodologia também pode ser replicada para outros sistemas costeiros

A numerical study of local variations in tidal regime of Tagus estuary, Portugal

Tidal dynamics of shallow estuaries and lagoons is a complex matter that has attracted the attention of a large number of researchers over the last few decades. The main purpose of the present work is to study the intricate tidal dynamics of the Tagus estuary, which states as the largest estuary of the Iberian Peninsula and one of the most important wetlands in Portugal and Europe. Tagus has large areas of low depth and a remarkable geomorphology, both determining the complex propagation of tidal waves along the estuary of unknown manner. A non-linear two-dimensional vertically integrated hydrodynamic model was considered to be adequate to simulate its hydrodynamics and an application developed from the SIMSYS2D model was applied to study the tidal propagation along the estuary. The implementation and calibration of this model revealed its accuracy to predict tidal properties along the entire system. Several model runs enabled the analysis of the local variations in tidal dynamics, through the interpretation of amplitude and phase patterns of the main tidal constituents, tidal asymmetry, tidal ellipses, form factor and tidal dissipation. Results show that Tagus estuary tidal dynamics is extremely dependent on an estuarine resonance mode for the semi-diurnal constituents that induce important tidal characteristics. Besides, the estuarine coastline features and topography determines the changes in tidal propagation along the estuary, which therefore result essentially from a balance between convergence/divergence and friction and advection effects, besides the resonance effects

NW Iberian Peninsula coastal upwelling future weakening: competition between wind intensification and surface heating

Climate change will modify the oceanographic future properties of the NW Iberian Peninsula due to the projected variations in the meteorological forcing, that will intensify local winds and promote surface heating. The Delft3D-Flow model forced with atmospheric conditions provided within the framework of the CORDEX project under the RCP 8.5 greenhouse emission scenario was used to analyse changes in upwelling. Numerical experiments were conducted under high-extreme upwelling conditions for the historical (1976-2005) and future (2070-2099) period. This study also innovates through the exploitation of a numerical modelling approach that includes both shelf and estuarine processes along the coastal zone. Coastal upwelling will be less effective in the future despite the enhancement of upwelling favorable wind patterns previously predicted for this region. Upwelling weakening is due to the future sea surface warming that will increase the stratification of the upper layers hindering the upward displacement of the underlying water, reducing the surface input of nutrients.publishe

Projections of wind energy resources in the Caribbean for the 21st century

The Caribbean has suitable conditions for a significant wind energy development, which makes a good planning for the future renewable energy mix essential. The impact of climate change on Caribbean wind power has been analyzed by means of an ensemble of CORDEX regional climate models (RCMs) under the RCP8.5 warming scenario. The offshore wind energy resource was classified for the historical period and for the future considering wind energy factors, environmental risk factors and cost factors whose weights were estimated by a Delphi method. Future projections show a maximum annual wind increase, ∼0.4 ms −1 (8%), in most of the Caribbean, except in the Yucatán Basin. This increment occurs mainly during the wet season, ∼0.5 ms −1 (∼10%), associated with changes in the extension of the North Atlantic Subtropical High, which will strengthen the Caribbean low-level jet. Additionally, the moderate wind increase, ∼0.2 ms −1 (∼4%), projected during the dry season is restricted to the southeastern coast and it is associated with an increment in the land-ocean temperature difference (∼1 °C), which will intensify local easterly winds. The low-level jet region was classified as the richest wind energy resource in the Caribbean for the future with a larger extension compared to the historical period.Xunta de Galicia | Ref. ED431C 2017/64Fundação para a Ciência e a Tecnologia | Ref. SFRH/BPD/97320/2013Fundação para a Ciência e a Tecnologia | Ref. SFRH/BPD/118142/2016Fundação para a Ciência e a Tecnologia | Ref. SFRH/BPD/99707/201

Historical and future naturalization of Magallana gigas in the Galician coast in a context of climate change

Financiado para publicación en acceso aberto: Universidade de Vigo/CISUGMagallana gigas is a naturalized species on the north coast of Galicia (Rías Altas, Northwest Iberian Peninsula), where it was unintentionally introduced. In recent decades, a greater abundance of M. gigas has been observed on the Galician coast, expanding towards the south, reaching the Artabro Gulf (Rías Centrales, NW Galician coast), probably due to ocean warming. Although this species has been cultivated in the Rías Baixas since the early 1990s and spawning has been reported, recruitment was never observed, which is likely due to the cold water upwelled during the spawning months. The future rise in seawater temperature may favor the naturalization of the non-indigenous species M. gigas southwards, in the Rías Baixas. Thermally, the Ría de Arousa seems to be the most favorable estuary for the future settlement of M. gigas, which may occur in the next decades. The extent of thermally favorable zones within estuaries is projected to increase rapidly by mid-century, and reaching 100 % of the estuarine area by the end of the century. As has already happened in other areas of the world, the expansion and naturalization of the Pacific oyster on the Galician coast will likely affect the native communities and economic activities, making it necessary to implement monitoring and management strategies to mitigate its effect.Xunta de Galicia | Ref. ED481B-2021-103Xunta de Galicia-FEDER | Ref. ED431C 2021/44Fundação para a Ciência e a Tecnologia | Ref. UIDP/50017/2020Fundação para a Ciência e a Tecnologia | Ref. UIDB/50017/2020Fundação para a Ciência e a Tecnologia | Ref. LA/ P/0094/202

Does global warming threaten small-scale bivalve fisheries in NW Spain?

Shellfisheries of the intertidal and shallow subtidal infaunal bivalves Ruditapes decussatus, Ruditapes philippinarum, Venerupis corrugata and Cerastoderma edule are of great socio-economic importance (in terms of landings) in Europe, specifically in the Galician Rías Baixas (NW Spain). However, ocean warming may threaten these fisheries by modifying the geographic distribution of the species and thus affecting productive areas. The present study analysed the impact of rising ocean temperature on the geographical distribution of the thermal comfort areas of these bivalves throughout the 21st century. The Delft3D model was used to downscale climate data from CORDEX and CMIP5 and was run for July and August in three future periods (2025–2049, 2050–2074 and 2075–2099) under the RCP8.5 scenario. The areas with optimal temperature conditions for shellfish harvesting located in the middle and outer parts of the rias may increase in the near future for R. decussatus, V. corrugata and C. edule and decrease in the far future for R. philippinarum. Moreover, shellfish beds located in the shallower areas of the inner parts of the Rías Baixas could be affected by increased water temperature, reducing the productive areas of the four species by the end of the century. The projected changes in thermal condition will probably lead to changes in shellfish harvesting modality (on foot or aboard vessels) with further socio-economic consequences.Xunta de Galicia | Ref. ED481B-2021-103Xunta de Galicia | Ref. ED431C 2021/44Xunta de Galicia | Ref. ED431C 2021/42Ministerio de Economía y Competitividad | Ref. CTM2014-51935-RFundação para a Ciência e a Tecnologia | Ref. UIDP/50017/2020Fundação para a Ciência e a Tecnologia | Ref. UIDB/50017/2020Fundação para a Ciência e a Tecnologia | Ref. LA/P/0094/2020Financiado para publicación en acceso aberto: Universidade de Vigo/CISU

Will climate change compromise the thermal comfort areas of socio-economically important bivalve species in the Rías Baixas (NW Spain)?

Ponencia presentada en: XII Congreso de la Asociación Española de Climatología celebrado en Santiago de Compostela entre el 19 y el 21 de octubre de 2022.[ES]Los bivalvos infaunales Ruditapes decussatus, Ruditapes philippinarum, Venerupis corrugata y Cerastoderma edule forman parte de una de las pesquerías con mayor importancia socioeconómica en las Rías Baixas (NO de España). El calentamiento del océano podría afectar a estas pesquerías ya que el aumento de la temperatura daría lugar a un incremento del estrés al que se ven sometidas estas especies, reduciendo su productividad e incluso propiciando cambios en su distribución geográfica. En este estudio se analizó cómo el aumento de la temperatura del agua podría afectar a la distribución geográfica de las zonas de confort térmico de estos bivalvos a finales del siglo XXI. El modelo Delft3D se utilizó para simular la hidrodinámica de las Rías Baixas durante los meses de julio y agosto del periodo histórico (1990-2019) y el periodo futuro (2075-2099) bajo el escenario RCP8.5. Durante el periodo histórico, las zonas más favorables para especies intermareales como R. decussatus, R. philippinarum y C. edule se observaron principalmente en la parte interior de las rías. Para V. corrugata, las zonas con confort se sitúan en el intermareal inferior y submareal somero. Las proyecciones futuras sugieren un aumento general de la extensión de las zonas con condiciones térmicas óptimas en comparación con el periodo histórico para R. decussatus, C. edule y V. corrugata. En el caso de R. philippinarum, la extensión podría disminuir en el futuro. Por último, la productividad de estas especies podría verse reducida en las áreas de marisqueo situadas en las zonas menos profundas de los sectores interiores de las Rías Baixas debido al aumento de la temperatura del agua.[EN]The infaunal bivalves Ruditapes decussatus, Ruditapes philippinarum, Venerupis corrugata and Cerastoderma edule are part of one of the most socio-economically important shellfisheries in the Rías Baixas (NW Spain). Ocean warming may affect these fisheries as the increase in water temperature would increase the stress conditions these species are subjected to. It could reduce their productivity and even change their geographical distribution. The present study analysed how rising ocean temperatures could affect the geographical distribution of the thermal comfort areas of these bivalves at the end of the 21st century. The Delft3D model was used to simulate the hydrodynamics of the Rías Baixas during the months of July and August of the historical period (1990-2019) and the future period (2075-2099) under the RCP8.5 scenario. Historically, the most comfortable areas for intertidal species such as R. decussatus, R. philippinarum and C. edule are mainly found in the inner part of the rias. For V. corrugata, the comfort zones are located in the lower intertidal and shallow subtidal. Future projections suggest a general increase in the extent of areas with optimal thermal conditions compared to the historical period for R. decussatus, C. edule and V. corrugata and a decrease for R. philippinarum. Finally, the productivity of these species could be reduced in the shellfishing areas located in the shallower areas of the inner sectors of the Rías Baixas due to the increase in water temperature

Unusual circulation patterns of the rias baixas induced by minho freshwater intrusion (NW of the Iberian Peninsula)

The Minho River, situated 30 km south of the Rias Baixas, is the most important freshwater source flowing into the Western Galician coast (NW of the Iberian Peninsula). The buoyancy generated by the Minho estuarine plume can reverse the normal circulation pattern inside the Rias Baixas affecting the exchange between the Rias and the ocean, changing the input of nutrients. Nevertheless, this inversion of the circulation patterns is not a well-monitored phenomenon. The only published results based on in situ data related to the presence of the Minho River plume inside the Rias de Vigo and Pontevedra correspond to an event measured on spring 1998. In this case unexpectedly higher inflow surface current velocities were found at the Ria de Pontevedra, located further away from Minho River. Thus, the main aim of this study is to research the main factors inducing this unusual pattern on the circulation of the Rias de Vigo and Pontevedra. A numerical model implementation of MOHID previously developed, calibrated, and validated for this coastal area was used. Several scenarios were performed in order to explain the individual effect of the Minho River, rivers discharging into each Rias, and estuarine morphology changes. According to the model results, the Minho River discharge is a key factor in the establishment of the negative circulation, while small rivers inside the Rias slightly attenuate this circulation. The negative circulation was stronger in Ria de Pontevedra independently of the distance of this coastal system from the Minho River mouth, showing that morphologic estuarine features are the main factor justifying the different local circulation patterns

Flooding conditions at Aveiro Port (Portugal) within the framework of projected climate change

Ports constitute a significant influence in the economic activity in coastal areas through operations and infrastructures to facilitate land and maritime transport of cargo. Ports are located in a multi-dimensional environment facing ocean and river hazards. Higher warming scenarios indicate Europe’s ports will be exposed to higher risk due to the increase in extreme sea levels (ESL), a combination of the mean sea level, tide, and storm surge. Located on the west Iberia Peninsula, the Aveiro Port is located in a coastal lagoon exposed to ocean and river flows, contributing to higher flood risk. This study aims to assess the flood extent for Aveiro Port for historical (1979–2005), near future (2026–2045), and far future (2081–2099) periods scenarios considering different return periods (10, 25, and 100-year) for the flood drivers, through numerical simulations of the ESL, wave regime, and riverine flows simultaneously. Spatial maps considering the flood extent and calculated area show that most of the port infrastructures’ resilience to flooding is found under the historical period, with some marginal floods. Under climate change impacts, the port flood extent gradually increases for higher return periods, where most of the terminals are at high risk of being flooded for the far-future period, whose contribution is primarily due to mean sea-level rise and storm surges.Fundação para a Ciência e a Tecnologia | Ref. SFRH/BD/114919/2016Fundação para a Ciência e a Tecnologia | Ref. CEECIND/00459/2018Fundação para a Ciência e a Tecnologia | Ref. UIDB/50017/2020Fundação para a Ciência e a Tecnologi | Ref. UIDP/50017/2020European Cooperation in Science and Technology (COST) | Ref. H2020, CA1710