{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T21:26:28Z","timestamp":1776806788312,"version":"3.51.2"},"reference-count":34,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T00:00:00Z","timestamp":1772236800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JMSE"],"abstract":"<jats:p>The present study aims to provide a comprehensive and integrated analysis of the potential of offshore renewable energy resources in the maritime sector located at the Danube mouth area in the Black Sea, one of the most complex and dynamic hydrological and climatic systems in Eastern Europe. In the current context of climate change, the Danube mouths are of strategic importance due to the specific morphology of the area and the high potential for harnessing multiple renewable sources such as wind, wave, and solar energy. Therefore, this research supports sustainable development and adaptation to climate change. At the same time, predicted climate change may increase the frequency of extreme events, such as storms, sudden changes in water levels, and increased wave heights, which can affect navigational safety, ecosystem integrity, and coastal infrastructure. Thus, this research seeks not only to identify the energy potential of renewable resources but also to assess their risks and vulnerabilities. Using a wide range of data types, three time periods were studied for the main Danube mouth: Sulina and St. George. Both Sulina and St. George present future wind and wave intensification trends, especially in high-emission scenarios, without significant changes in the dominant direction. St. George remains the area with the more intense regime, while Sulina has more moderate episodes, but with a slightly more evident increase in the frequency of 6\u201312 m\/s winds. At the same time, solar radiation shows a slight increase in recent years, especially in the summer season. Harnessing these resources has the potential to, for example, power coastal communities and offshore installations, providing clean and reliable energy while reducing greenhouse gas emissions.<\/jats:p>","DOI":"10.3390\/jmse14050471","type":"journal-article","created":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T16:06:59Z","timestamp":1772467619000},"page":"471","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Joint Evaluation of the Renewable Energy Resources at the Mouths of the Danube River"],"prefix":"10.3390","volume":"14","author":[{"given":"Victor-Ionut","family":"Popa","sequence":"first","affiliation":[{"name":"Mechanical Engineering Department, Dunarea de Jos University, 800008 Galati, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6899-8442","authenticated-orcid":false,"given":"Eugen","family":"Rusu","sequence":"additional","affiliation":[{"name":"Mechanical Engineering Department, Dunarea de Jos University, 800008 Galati, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6649-3985","authenticated-orcid":false,"given":"Ana-Maria","family":"Chirosca","sequence":"additional","affiliation":[{"name":"Mechanical Engineering Department, Dunarea de Jos University, 800008 Galati, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8179-1347","authenticated-orcid":false,"given":"Liliana","family":"Rusu","sequence":"additional","affiliation":[{"name":"Mechanical Engineering Department, Dunarea de Jos University, 800008 Galati, Romania"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Christodoulou Raftis, C., Vanelslander, T., and van Hassel, E. (2023). A Global Analysis of Emissions, Decarbonization, and Alternative Fuels in Inland Navigation\u2014A Systematic Literature Review. Sustainability, 15.","DOI":"10.3390\/su151914173"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Mako, P., D\u00e1vid, A., B\u00f6hm, P., and Savu, S. (2021). Sustainable Transport in the Danube Region. Sustainability, 13.","DOI":"10.3390\/su13126797"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1801","DOI":"10.1016\/j.rser.2010.11.033","article-title":"Policy and promotion of sustainable inland waterway transport in Europe\u2014Danube River","volume":"15","author":"Mihic","year":"2011","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"85","DOI":"10.3141\/1763-13","article-title":"Innovative Application for Dynamic Navigational Support and Transport Management on Inland Waterways: Experience from a Research Project on the Danube River","volume":"1763","author":"Pfliegl","year":"2001","journal-title":"Transp. Res. Rec. J. Transp. Res. Board"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Popa, V.-I., Rusu, E., Chirosca, A.-M., and Arseni, M. (2025). Danube River: Hydrological Features and Risk Assessment with a Focus on Navigation and Monitoring Frameworks. Earth, 6.","DOI":"10.3390\/earth6030070"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1010","DOI":"10.1016\/j.trpro.2019.07.141","article-title":"The Danube River and its importance on the Danube countries in cargo transport","volume":"40","year":"2019","journal-title":"Transp. Res. Procedia"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"R\u0103ileanu, A.B., Rusu, L., Marcu, A., and Rusu, E. (2024). The Expected Dynamics for the Extreme Wind and Wave Conditions at the Mouths of the Danube River in Connection with the Navigation Hazards. Inventions, 9.","DOI":"10.20944\/preprints202403.0185.v1"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Onea, F., Manolache, A.I., and Ganea, D. (2022). Assessment of the Black Sea High-Altitude Wind Energy. J. Mar. Sci. Eng., 10.","DOI":"10.3390\/jmse10101463"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Ducman, A., Teodorescu, C., Coc\u00e2rlea, V., Cioclu, A., and Szemkovics, L. (2022, January 9\u201310). Analysis of the potential of solar energy in the coastal area: Case study\u2014The Black Sea coast of Romania. Proceedings of the Conference of Public Recreation and Landscape Protection\u2014With Environment Hand in Hand, K\u0159tiny, Czech Republic.","DOI":"10.11118\/978-80-7509-831-3-0036"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"551","DOI":"10.1006\/ecss.2000.0664","article-title":"Danube River Sediment Input and its Interaction with the North-western Black Sea, Estuarine","volume":"54","author":"Panin","year":"2002","journal-title":"Coast. Shelf Sci."},{"key":"ref_11","unstructured":"Georgiev, P. (2022, January 20\u201321). Development of short sea shipping and multimodal transport of Black Sea region. Proceedings of the Sixteenth International Conference on Marine Sciences and Technologies, Black Sea 2022, Varna, Bulgaria."},{"key":"ref_12","first-page":"523","article-title":"Analysis of river\u2013sea transport in the direction of the Danube\u2013Black Sea and the Danube Rhine River River Main","volume":"8","year":"2014","journal-title":"TransNav Int. J. Mar. Navig. Saf. Sea Transp."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Silion, A., and Rusu, L. (2025). A Review Concerning the Offshore Wind and Wave Energy Potential in the Black Sea. J. Mar. Sci. Eng., 13.","DOI":"10.3390\/jmse13091643"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Issa-Zadeh, S.B., Esteban, M.D., L\u00f3pez-Guti\u00e9rrez, J.-S., and Garay-Rondero, C.L. (2024). Unveiling the Sensitivity Analysis of Port Carbon Footprint via Power Alternative Scenarios: A Deep Dive into the Valencia Port Case Study. J. Mar. Sci. Eng., 12.","DOI":"10.3390\/jmse12081290"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/j.margeo.2009.03.003","article-title":"Wave climate, coastal sediment budget and shoreline changes for the Danube Delta","volume":"262","author":"Dan","year":"2009","journal-title":"Mar. Geol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/j.envsci.2014.04.013","article-title":"Climate and land-use change impacts on potential solar photovoltaic power generation in the Black Sea region","volume":"46","author":"Gunderson","year":"2015","journal-title":"Environ. Sci. Policy"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Mares, C., Mares, I., Dobrica, V., Demetrescu, C., Mares, C., Mares, I., Dobrica, V., and Demetrescu, C. (2023). Discriminant Analysis of the Solar Input on the Danube\u2019s Discharge in the Lower Basin. Atmosphere, 14.","DOI":"10.3390\/atmos14081281"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"B\u0103n\u0103duc, A. (2023). The Danube Delta: The Achilles Heel of Danube River\u2013Danube Delta\u2013Black Sea Region Fish Diversity under a Black Sea Impact Scenario Due to Sea Level Rise\u2014A Prospective Review. Fishes, 8.","DOI":"10.3390\/fishes8070355"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"B\u0103rbulescu, A., and Dumitriu, C.\u0218. (2025). Assessing the Changes in Precipitation Patterns and Aridity in the Danube Delta (Romania). J. Mar. Sci. Eng., 13.","DOI":"10.3390\/jmse13081529"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"B\u0103rbulescu, A., and Dumitriu, C.\u0218. (2025). Shifts in Precipitation Variability near the Danube Delta Biosphere Reserve (1965\u20132019). Water, 17.","DOI":"10.3390\/w17182692"},{"key":"ref_21","unstructured":"(2025, November 10). Galati Lower Danube River Administration, A.A. Available online: https:\/\/www.afdj.ro\/en\/content\/danube-water-level."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"555","DOI":"10.1016\/j.marpolbul.2007.09.015","article-title":"Coastal changes at the Sulina mouth of the Danube River as a result of human activities","volume":"55","author":"Stanica","year":"2007","journal-title":"Mar. Pollut. Bull."},{"key":"ref_23","unstructured":"Laura, D., Florin, D., Gabriela, V., Iulian, P., and Naliana, L. (2021, January 16\u201322). Suspended sediment concentrations and fluxes of a meandering system, the St. George distributary, Danube Delta. Proceedings of the International Multidisciplinary Scientific GeoConference: SGEM 2021, Albena, Bulgaria."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Croce, P., Formichi, P., and Landi, F. (2021). Evaluation of Current Trends of Climatic Actions in Europe Based on Observations and Regional Reanalysis. Remote Sens., 13.","DOI":"10.3390\/rs13112025"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1999","DOI":"10.1002\/qj.3803","article-title":"The ERA5 Global Reanalysis","volume":"146","author":"Hersbach","year":"2020","journal-title":"Q. J. R. Meteorol. Soc."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Rusu, L., and Rusu, E. (2021). Evaluation of the Worldwide Wave Energy Distribution Based on ERA5 Data and Altimeter Measurements. Energies, 14.","DOI":"10.3390\/en14020394"},{"key":"ref_27","unstructured":"Giorgetta, M., Jungclaus, J., Reick, C., Legutke, S., Brovkin, V., Crueger, T., Esch, M., Fieg, K., Glushak, K., and Gayler, V. (2012). CMIP5 Simulations of the Max Planck Institute for Meteorology (MPI-M) Based on the MPI-ESM-LR Model: The piControl Experiment, Served by ESGF, World Data Center for Climate (WDCC) at DKRZ, PCMDI."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1029\/2020MS002075","article-title":"The CNRM Global Atmosphere Model ARPEGE-Climat 6.3: Description and Evaluation","volume":"12","author":"Roehrig","year":"2020","journal-title":"J. Adv. Model. Earth Syst."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1016\/j.gloenvcha.2016.05.009","article-title":"The Shared Socioeconomic Pathways and their energy, land use, and greenhouse gas emissions implications: An overview","volume":"42","author":"Riahi","year":"2017","journal-title":"Glob. Environ. Change"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"7649","DOI":"10.1029\/98JC02622","article-title":"A third generation wave model for coastal regions. Part 1: Model description and validation","volume":"104","author":"Booij","year":"1999","journal-title":"J. Geophys. Res."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"782","DOI":"10.1175\/1520-0485(1991)021<0782:ATGMFW>2.0.CO;2","article-title":"A third-generation model for wind waves on slowly varying, unsteady and inhomogeneous depths and currents","volume":"21","author":"Tolman","year":"1991","journal-title":"J. Phys. Oceanogr."},{"key":"ref_32","unstructured":"Holthuijsen, L.H. (2010). Waves in Oceanic and Coastal Waters, Cambridge University Press. [1st ed.]."},{"key":"ref_33","first-page":"127","article-title":"An analysis of the storm dynamics in the Black Sea","volume":"63","author":"Rusu","year":"2018","journal-title":"Rom. J. Tech. Sci. Appl. Mech."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Kim, J., Kim, E., Jung, S., Kim, M., Kim, B., and Kim, S. (2025). Improved Surface Solar Irradiation Estimation Using Satellite Data and Feature Engineering. Remote Sens., 17.","DOI":"10.3390\/rs17010065"}],"container-title":["Journal of Marine Science and Engineering"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2077-1312\/14\/5\/471\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,5]],"date-time":"2026-03-05T12:19:35Z","timestamp":1772713175000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2077-1312\/14\/5\/471"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,28]]},"references-count":34,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2026,3]]}},"alternative-id":["jmse14050471"],"URL":"https:\/\/doi.org\/10.3390\/jmse14050471","relation":{},"ISSN":["2077-1312"],"issn-type":[{"value":"2077-1312","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,28]]}}}