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12 results on '"Kakoulaki, G."'

5. Application of the NBS impact evaluation framework: NBS performance and impact evaluation case studies

Author

Dubovik, M., Dumitru, A., Wendling, L., Briega, P., Capobianco, V., Connop, S., Crespo, L., Fermoso, J., Giannico, V., Gómez, S., González, M., Kakoulaki, G., Kumar, P., Leppänen, S., Marijuan, R., Pablo, S., Pérez, J.A., Pilla, F., Rinta-Hiiro, V., Riquelme, H., Sánchez, E., Sánchez, I., Sánchez, J.C., Sánchez, R., San José, E., Sanz, J.M., Sanz, N., Serramia, J., Spano, G., Särkilahti, M., Tomé-Lourido, D., van de Sijpe, K., Verdugo, F., Villazán, A., Vos, P., Zulian, G., Allaert, K., Almenar, J.B., Arnbjerg-Nielsen, K., Baldacchini, C., Basco, L., Beaujouan, V., Benoit, G., Bockarjova, M., Bonelli, S., Bouzouidja, R., Butlin, T., Calatrava, J., Calfapietra, C., Cannavo, P., Caroppi, G., Chancibault, K., Cioffi, M., Dadvand, P., de Bellis, Y., de Keijzer, C., de la Hera, A., Decker, S., Djordjevic, S., Dushkova, D., Faneca, M., Fatima, Z., Ferracini, C., Fleury, G., García, I., García-Alcaraz, M., Gerundo, C., Gil-Roldán, E., Giordano, R., Giugni, M., Gonzalez-Ollauri, A., Guidolotti, G., Haase, D., Heredida, J., Hermawan, T., Herranz-Pascual, K., Hölscher, K., Jermakka, J., Kiss, M., Kraus, F., Körmöndi, B., Laikari, A., Laille, P., Lemée, C., Llorente, M., Lodder, M., Lourido, D.T., Macsinga, I., Manzano, M., Martelli, F., Martins, R., Mayor, B., McKnight, U., Mendizabal, M., Mendonça, R., Mickovski, S.B., Nash, C., Nadim, F., Nolan, P., Oen, A., Olsson, P., Olver, C., Paradiso, F., Petucco, C., Pisani, N., Piton, G., Pugliese, F., Rasmussen, M., Munro, K., Reich, E., Reichborn-Kjennerud, K., Renaud, F., Rhodes, M.L., Robles, V., Rodriguez, F., Roebeling, P., Ruangpan, L., Rugani, B., Rödl, A., Sánchez Torres, A., Sanesi, G., Scharf, B., Silvestri, F., Skodra, J., Stanganelli, M., Szkordilisz, F., Tacnet, J.-M., Vay, L., Vella, S., Vercelli, M., Vojinovic, Z., Werner, A., Wheeler, B., Young, C., Zoritaz, S., zu-Castell Rüdenhausen, M., Dumitru, Adina, and Wendling, Laura

Abstract

No abstract available.

Published
2021

7. Mapping and assessment of ecosystems and their services : an EU wide ecosystem assessment in support of the EU biodiversity strategy

Author

Maes, J., Teller, A., Erhard, M., Condé, S., Vallecillo, S., Barredo, J.I., Paracchini, M.L., Abdul Malak, D., Trombetti, M., Vigiak, O., Zulian, G., Addamo, A.M., Grizzetti, B., Somma, F., Hagyo, A., Vogt, P., Polce, C., Jones, A., Marin, A.I., Ivits, E., Mauri, A., Rega, C., Czúcz, B., Ceccherini, G., Pisoni, E., Ceglar, A., De Palma, P., Cerrani, I., Meroni, M., Caudullo, G., Lugato, E., Vogt, J.V., Spinoni, J., Cammalleri, C., Bastrup-Birk, A., San Miguel, J., San Román, S., Kristensen, P., Christiansen, T., Zal, N., De Roo, A., Cardoso, A.C., Pistocchi, A., Del Barrio Alvarellos, I., Tsiamis, K., Gervasini, E., Deriu, I., La Notte, A., Abad Viñas, R., Vizzarri, M., Camia, A., Robert, N., Kakoulaki, G., Garcia Bendito, E., Panagos, P., Ballabio, C., Scarpa, S., Montanarella, L., Orgiazzi, A., Fernandez Ugalde, O., and Santos-Martín, F.

Subjects
Settore BIO/07 - Ecologia, Settore AGR/05 - Assestamento Forestale e Selvicoltura
Published
2020

9. Assessment of global wave models on regular and unstructured grids using the Unresolved Obstacles Source Term

Author

Peter Salamon, Michalis Vousdoukas, Georgia Kakoulaki, Lorenzo Mentaschi, Tomás Fernández Montblanc, Giovanni Besio, Evangelos Voukouvalas, Ciencias de la Tierra, Mentaschi L., Vousdoukas M., Montblanc T.F., Kakoulaki G., Voukouvalas E., Besio G., and Salamon P.

Subjects
Unresolved Obstacles Source Term, 010504 meteorology & atmospheric sciences, Scale (ratio), Subscale modeling, Computer science, Oceanography, 01 natural sciences, WW3, Computational science, Wind wave, Global triangular mesh, Polygon mesh, Unresolved obstacles, 0105 earth and related environmental sciences, WAVEWATCH III, 010505 oceanography, Advection, Dissipation, Term (time), Global unstructured mesh, Global wave modeling, UOST, Wave modeling, Dissipative system, Unresolved obstacle, Energy (signal processing)
Abstract

The Unresolved Obstacles Source Term (UOST) is a general methodology for parameterizing the dissipative effects of subscale islands, cliffs, and other unresolved features in ocean wave models. Since it separates the dissipation from the energy advection scheme, it can be applied to any numerical scheme or any type of mesh. UOST is now part of the official release of WAVEWATCH III, and the freely available package alphaBetaLab automates the estimation of the parameters needed for the obstructed cells. In this contribution, an assessment of global regular and unstructured (triangular) wave models employing UOST is presented. The results in regular meshes show an improvement in model skill, both in terms of spectrum and of integrated parameters, thanks to the UOST modulation of the dissipation with wave direction, and to considering the cell geometry. The improvement is clear in wide areas characterized by the presence of islands, like the whole central-western Pacific Basin. In unstructured meshes, the use of UOST removes the need of high resolution in proximity of all small features, leading to (a) a simplification in the development process of large scale and global meshes, and (b) a significant decrease of the computational demand of accurate large-scale models.

Published
2020

10. Parameterizing unresolved obstacles with source terms in wave modeling: A real-world application

Author

Michalis Vousdoukas, Giovanni Besio, Georgia Kakoulaki, Lorenzo Mentaschi, Luc Feyen, Evangelos Voukouvalas, Mentaschi L., Kakoulaki G., Vousdoukas M., Voukouvalas E., Feyen L., and Besio G.

Subjects
Atmospheric Science, 010504 meteorology & atmospheric sciences, 010505 oceanography, Computer science, Advection, Transparency (human–computer interaction), Type (model theory), Geotechnical Engineering and Engineering Geology, Oceanography, 01 natural sciences, Domain (software engineering), Wave model, Source term, Wave modeling, Unresolved obstacle, Wavewatch, Computer Science (miscellaneous), Dissipative system, Bathymetry, Subscale modelling, UOST, Algorithm, Energy (signal processing), 0105 earth and related environmental sciences
Abstract

Parameterizing the dissipative effects of small, unresolved coastal features, is fundamental to improve the skills of wave models. The established technique to deal with this problem consists in reducing the amount of energy advected within the propagation scheme, and is currently available only for regular grids. To find a more general approach, Mentaschi et al., 2015b formulated a technique based on source terms, and validated it on synthetic case studies. This technique separates the parameterization of the unresolved features from the energy advection, and can therefore be applied to any numerical scheme and to any type of mesh. Here we developed an open-source library for the estimation of the transparency coefficients needed by this approach, from bathymetric data and for any type of mesh. The spectral wave model WAVEWATCH III was used to show that in a real-world domain, such as the Caribbean Sea, the proposed approach has skills comparable and sometimes better than the established propagation-based technique.

Published
2018

11. Achieving universal electrification of rural healthcare facilities in sub-Saharan Africa with decentralized renewable energy technologies.

Author

Moner-Girona M, Kakoulaki G, Falchetta G, Weiss DJ, and Taylor N

Abstract

A potential response to the COVID-19 pandemic in sub-Saharan Africa (SSA) with long-term benefits is to provide electricity for medical equipment in rural health centers and communities. This study identifies a large gap in the electrification of healthcare facilities in SSA, and it shows that decentralized photovoltaic systems can offer a clean, reliable, quick, and cost-effective solution. The cost of providing renewable electricity to each health facility by a stand-alone PV system is analyzed for a given location (incorporating operational costs). The upfront investment cost for providing electricity with PV to >50,000 facilities (mostly primary health posts) currently without electricity is estimated at EUR 484 million. Analysis of the accessibility and population distribution shows that 281 million people could reduce their travel time to healthcare facilities (by an average of 50 min) if all facilities were electrified., Competing Interests: The authors declare no competing interests., (© 2021 The Authors.)

Published
2021
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12. Accounting for changes in flood control delivered by ecosystems at the EU level.

Author

Vallecillo S, Kakoulaki G, La Notte A, Feyen L, Dottori F, and Maes J

Abstract

Ecosystem service accounts require quantifying the contribution of ecosystems to the society. However, estimation of the ecosystem service used (actual flow) remains still very challenging for regulating services. We developed an experimental ecosystem service account for flood control delivered by ecosystems including: 1) Biophysical modelling of ecosystem service potential, demand and actual flow. 2) Translation of the actual flow in monetary terms. 3) Compilation of accounting tables. Ultimately, we analysed changes in flood control between 2006 and 2012. The value of flood control delivered by ecosystems in 2012 is estimated at about 16 billion euro. This value increased by 1.14% between 2006 and 2012. This increase is mainly due to the sprawl of artificial areas into floodplains that benefit from flood control delivered by ecosystems. However, the role of natural capital to control floods is slightly decreasing. This is confirmed by the increase of artificial areas not protected by ecosystems (+1.9%, unmet demand). The role of natural capital to control floods could be enhanced by restoring ecosystems upstream from this unmet demand and increase the ecosystems contribution to human well-being. The methodology makes a significant contribution to the assessment of ecosystem services flow and the accounting framework., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper, (© 2020 The Author(s).)

Published
2020
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