Ecosystem based modeling and indication of ecological integrity in the German North Sea—Case study offshore wind parks

2011 ◽  
Vol 11 (1) ◽  
pp. 168-174 ◽  
Author(s):  
Benjamin Burkhard ◽  
Silvia Opitz ◽  
Hermann Lenhart ◽  
Kai Ahrendt ◽  
Stefan Garthe ◽  
...  
Keyword(s):  
North Sea ◽  
Ecological Integrity ◽  
Offshore Wind ◽  
Offshore Wind Parks

scholarly journals Sensitivity analysis of mesoscale simulations to physics parameterizations: a case study of storm Ciara over the Belgian North Sea using WRF-ARW

2021 ◽  
Author(s):  
Adithya Vemuri ◽  
Sophia Buckingham ◽  
Wim Munters ◽  
Jan Helsen ◽  
Jeroen van Beeck
Keyword(s):  
Sensitivity Analysis ◽  
Temporal Resolution ◽  
North Sea ◽  
Wind Direction ◽  
Offshore Wind ◽  
Wave Radiation ◽  
Energy Yield ◽  
Physics Parameterizations ◽  
Belgian North Sea

Abstract. The Weather, Research and Forecasting (WRF) model includes a multitude of physics parameterizations to account for atmospheric dynamics and interactions such as turbulent fluxes within the planetary boundary layer (PBL), long and short wave radiation, hydrometeor representation in microphysics, cloud ensemble representation in cumulus, amongst others. A sensitivity analysis is conducted in order to identify the optimal WRF-physics set-up and impact of temporal resolution of re-analysis dataset for the event of sudden changes in wind direction that can become challenging for reliable wind energy operations. In this context, Storm Ciara has been selected as a case study to investigate the influence of a broad combination of different interacting physics-schemes on quantities of interest that are relevant for energy yield assessment. Of particular relevance to fast transient weather events, two different temporal resolutions (1-hourly and 3-hourly) of the lateral boundary condition's re-analysis dataset, ERA5, are considered. Physics parameterizations considered in this study include: two PBL schemes (MYNN2.5 and scale-aware Shin Hong PBL), four cumulus schemes (Kain-Fritsch, Grell-Devenyi, and scale-aware Grell-Freitas and multi-scale Kain-Fritsch,) and three microphysics schemes (WSM5, Thompson and Morrison) coupled with two geospatial configurations for WRF simulation domains. The resulting WRF predictions are assessed by comparison to observational RADAR reflectivity data on precipitation. In addition, SCADA data on wind direction and wind speed from an offshore wind farm located in the Belgian North Sea is considered to assess modeling capabilities for local wind behavior at farm level. For precipitation, results are shown to be very sensitive to model setup, but no clear trends can be observed. For wind-related variables on the other hand, results show a definite improvement in accuracy when both scale-aware cumulus and PBL parameterizations are used in combination with 1-hourly temporal resolution reanalysis data and extended domain sizes.

scholarly journals The Triple Helix Frame Contributes to Strategic Innovation in Nearshore Wind Park Ecosystems

Triple Helix ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 1-35
Author(s):  
Tove Brink
Keyword(s):  
Triple Helix ◽  
Offshore Wind ◽  
Individual Interviews ◽  
Port Authorities ◽  
Strategic Innovation ◽  
Cost Of Energy ◽  
Ecosystem Level ◽  
Wind Park ◽  
Offshore Wind Parks

This research shows how port authorities in a triple helix context can contribute to strategic innovation with reduction of Levelized Cost of Energy in nearshore wind park ecosystems. The empirical qualitative case study was conducted from September 2017 to June 2018 with a port and a nearshore wind park owner and a logistic business actor operating on land and one operating at sea. Individual interviews and three joint network meetings provided data for the research. The findings reveal that port authorities in triple helix contexts can contribute to strategic innovation through use of the cross-disciplinary trinity of ‘organization’, ‘business model innovation’ and ‘financial cash flow’ to address value creation on project ecosystem level. The findings are summarized in a model for overview on the shift in interest and the basic understanding of flow. It is shown that the triple helix discussions provide a meaningful frame to achieve strategic innovation for competitive advantage of renewable wind energy ecosystem.Keywordsstrategic innovation – ecosystems – renewable energy – offshore wind parks

Stability assessment of VSC-HVDC connected large-scale offshore wind power: A North-Sea region case study

2015 ◽  
Author(s):  
Arjen A. van der Meer ◽  
Mario Ndreko ◽  
Jorrit A. Bos ◽  
Madeleine Gibescu ◽  
Mart A. M. M. van der Meijden ◽  
...  
Keyword(s):  
Wind Power ◽  
North Sea ◽  
Large Scale ◽  
Offshore Wind ◽  
Stability Assessment ◽  
Offshore Wind Power

Ten Demi-Culverins for Aldeburgh: Whitehall, the Dunkirkers, and a Suffolk Fishing Community, 1625–1630

2019 ◽  
Vol 58 (2) ◽  
pp. 315-337 ◽  
Author(s):  
Thomas Cogswell
Keyword(s):  
North Sea ◽  
East Coast ◽  
Central Government ◽  
Fishing Community ◽  
Close Attention ◽  
The North ◽  
The North Sea ◽  
The Impact

AbstractHistorians have not paid close attention to the activities of freebooters operating out of Dunkirk in the late 1620s. This essay corrects that omission by first studying the threat from Dunkirk to England's east coast and then addressing how the central government, counties, and coastal towns responded. A surprisingly rich vein of manuscript material from Great Yarmouth and particularly from the Suffolk fishing community of Aldeburgh informs this case study of the impact of this conflict around the North Sea.

scholarly journals Impact of Typhoons on Floating Offshore Wind Turbines: A Case Study of Typhoon Mangkhut

2021 ◽  
Vol 9 (5) ◽  
pp. 543
Author(s):  
Jiawen Li ◽  
Jingyu Bian ◽  
Yuxiang Ma ◽  
Yichen Jiang
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Safety Evaluation ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Motion Response ◽  
Offshore Wind Turbines ◽  
Floating Offshore Wind Turbines ◽  
Coupling Motion

A typhoon is a restrictive factor in the development of floating wind power in China. However, the influences of multistage typhoon wind and waves on offshore wind turbines have not yet been studied. Based on Typhoon Mangkhut, in this study, the characteristics of the motion response and structural loads of an offshore wind turbine are investigated during the travel process. For this purpose, a framework is established and verified for investigating the typhoon-induced effects of offshore wind turbines, including a multistage typhoon wave field and a coupled dynamic model of offshore wind turbines. On this basis, the motion response and structural loads of different stages are calculated and analyzed systematically. The results show that the maximum response does not exactly correspond to the maximum wave or wind stage. Considering only the maximum wave height or wind speed may underestimate the motion response during the traveling process of the typhoon, which has problems in guiding the anti-typhoon design of offshore wind turbines. In addition, the coupling motion between the floating foundation and turbine should be considered in the safety evaluation of the floating offshore wind turbine under typhoon conditions.

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