Trend analysis of wave storminess: wave direction and its impact on harbour agitation

Casas-Prat, Mercè; Sierra, Joan Pau

doi:10.5194/nhess-10-2327-2010

Cited by 39 publications

(18 citation statements)

References 38 publications

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“…This wave data set has a time resolution of 3 h and a (variable) spatial resolution of 0.125° at nearshore areas whereas 0.5° offshore. Although some extreme events are underestimated by HIPOCAS data [ Casas‐Prat and Sierra , ], it well represents the mean climate [ Ratsimandresy et al ., ].…”

Section: Wave Modelingmentioning

confidence: 99%

Projected future wave climate in the NW Mediterranean Sea

Casas-Prat

Sierra

2013

J. Geophys. Res. Oceans

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[1] Projected future regional wave climate scenarios at a high temporal-spatial scale were obtained for the NW Mediterranean Sea, using five combinations of regional-global circulation models. Changes in wave variables were analyzed and related to the variations of the forcing wind projections, while also evaluating the evolution of the presence of the different types of sea states. To assess the significance of the changes produced, a bootstrapbased method was proposed, which accounts for the autocorrelation of data and correctly reproduces the extremes. For the mean climate, relative changes of H s up to 610% were obtained, whereas they were around 620% for the extreme climate. In mean terms, variations of H s are similar to those associated with wind speed but are enhanced/ attenuated, respectively, when fetch conditions are favorable/unfavorable. In general, most notable alterations are not in the H s magnitude but rather in its direction. In this regard, during the winter season, it is interesting to note that the significant deviations between the results derived from the two global circulation models are larger than those between regional models. ECHAM5 simulated an enhanced west wind flow that is translated into more frequent W-NW waves, whereas the HadCM3Q3 global model gives rise to the east component, which contributes to a higher intensity and number of storms coming from such a direction and directly affects the wind-sea/swell distribution of coastal stretches that face east, like the Catalan coast. Different patterns of change were obtained during the summer when a common rise of NE-E waves was found.

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Section: Wave Modelingmentioning

confidence: 99%

Projected future wave climate in the NW Mediterranean Sea

Casas-Prat

Sierra

2013

J. Geophys. Res. Oceans

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“…This issue was previously analysed for few Catalan ports by Casas-Prat and Sierra (2010Sierra ( , 2012 who raised awareness by showing a tendency of harbour agitation to increase. However, their results were based on trend analysis, which is a simple and non-computational technique that can be used to provide a preliminary assessment only because it does not consider explicitly the greenhouse scenarios and because it assumes that the obtained tendency is valid into the future.…”

Section: Introductionmentioning

confidence: 99%

Impacts on wave-driven harbour agitation due to climate change in Catalan ports

Sierra

Casas-Prat

Virgili

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Abstract. The objective of the present work is to analyse how changes in wave patterns due to the effect of climate change can affect harbour agitation (oscillations within the port due to wind waves). The study focuses on 13 harbours located on the Catalan coast (NW Mediterranean) using a methodology with general applicability. To obtain the patterns of agitation, a Boussinesq-type model is used, which is forced at the boundaries by present/future offshore wave conditions extracted from recently developed high-resolution wave projections in the NW Mediterranean. These wave projections were obtained with the SWAN model forced by present/future surface wind fields projected, respectively, by five different combinations of global and regional circulation models (GCMs and RCMs) for the A1B scenario. The results show a general slight reduction in the annual average agitation for most of the ports, except for the northernmost and southernmost areas of the region, where a slight increase is obtained. A seasonal analysis reveals that the tendency to decrease is accentuated in winter. However, the inter-model variability is large for both the winter and the annual analysis. Conversely, a general increase with a larger agreement among models is found during summer, which is the period with greater activity in most of the studied ports (marinas). A qualitative assessment of the factors of variability seems to indicate that the choice of GCM tends to affect the spatial pattern, whereas the choice of RCM induces a more homogeneous bias over the regional domain.

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“…The Mediterranean coastal zone is not only increasingly under pressure from local human activities, but also subject to future global environmental change. In particular, sea-level rise and associated hazards 4 are expected to have significant impacts in Mediterranean nations during the 21 st century 5–7 .…”

Section: Background and Summarymentioning

confidence: 99%

A Mediterranean coastal database for assessing the impacts of sea-level rise and associated hazards

et al. 2018

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We have developed a new coastal database for the Mediterranean basin that is intended for coastal impact and adaptation assessment to sea-level rise and associated hazards on a regional scale. The data structure of the database relies on a linear representation of the coast with associated spatial assessment units. Using information on coastal morphology, human settlements and administrative boundaries, we have divided the Mediterranean coast into 13 900 coastal assessment units. To these units we have spatially attributed 160 parameters on the characteristics of the natural and socio-economic subsystems, such as extreme sea levels, vertical land movement and number of people exposed to sea-level rise and extreme sea levels. The database contains information on current conditions and on plausible future changes that are essential drivers for future impacts, such as sea-level rise rates and socio-economic development. Besides its intended use in risk and impact assessment, we anticipate that the Mediterranean Coastal Database (MCD) constitutes a useful source of information for a wide range of coastal applications.

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Trend analysis of wave storminess: wave direction and its impact on harbour agitation

Cited by 39 publications

References 38 publications

Projected future wave climate in the NW Mediterranean Sea

Projected future wave climate in the NW Mediterranean Sea

Impacts on wave-driven harbour agitation due to climate change in Catalan ports

A Mediterranean coastal database for assessing the impacts of sea-level rise and associated hazards

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