15 research outputs found

    Complementarity Assessment of South Greenland Katabatic Flows and West Europe Wind Regimes

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    Current global environmental challenges require vigorous and diverse actions in the energy sector. One solution that has recently attracted interest consists in harnessing high-quality variable renewable energy resources in remote locations, while using transmission links to transport the power to end users. In this context, a comparison of western European and Greenland wind regimes is proposed. By leveraging a regional atmospheric model specifically designed to accurately capture polar phenomena, local climatic features of southern Greenland are identified to be particularly conducive to extensive renewable electricity generation from wind. A methodology to assess how connecting remote locations to major demand centres would benefit the latter from a resource availability standpoint is introduced and applied to the aforementioned Europe-Greenland case study, showing superior and complementary wind generation potential in the considered region of Greenland with respect to selected European sites.Comment: Published in Elsevier Energ

    Global electricity network - Feasibility study

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    With the strong development of renewable energy sources worldwide, the concept of a global electricity network has been imagined in order to take advantage of the diversity from different time zones, seasons, load patterns and the intermittency of the generation, thus supporting a balanced coordination of power supply of all interconnected countries. The TB presents the results of the feasibility study performed by WG C1.35. It addresses the challenges, benefits and issues of uneven distribution of energy resources across the world. The time horizon selected is 2050. The study finds significant potential benefits of a global interconnection, identifies the most promising links, and includes sensitivity analyses to different factors, such as wind energy capacity factors or technology costs

    The Role of Power-to-Gas and Carbon Capture Technologies in Cross-Sector Decarbonisation Strategies

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    This paper proposes an optimisation-based framework to tackle long-term centralised planning problems of multi-sector, integrated energy systems including electricity, hydrogen, natural gas, synthetic methane and carbon dioxide. The model selects and sizes the set of power generation, energy conversion and storage as well as carbon capture technologies minimising the cost of supplying energy demand in the form of electricity, hydrogen, natural gas or synthetic methane across the power, heating, transportation and industry sectors whilst accounting for policy drivers, such as energy independence, carbon dioxide emissions reduction targets, or support schemes. The usefulness of the model is illustrated by a case study evaluating the potential of sector coupling via power-to-gas and carbon capture technologies to achieve deep decarbonisation targets in the Belgian context. Results, on the one hand, indicate that power-to-gas can only play a minor supporting role in cross-sector decarbonisation strategies in Belgium, as electrolysis plants are deployed in moderate quantities whilst methanation plants do not appear in any studied scenario. On the other hand, given the limited renewable potential, post-combustion and direct air carbon capture technologies clearly play an enabling role in any decarbonisation strategy, but may also exacerbate the dependence on fossil fuels

    National Institute for Global Environmental Change, July 1, 1994-- June 30, 1995

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    Grounding Territory: Geoscience and the Territorial Ordering of Greenland During the Early Cold War

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    Following recent calls for a more ‘earthly’ geopolitics, this thesis contributes to the ongoing momentum within Political Geography to add depth, volume, and matter to the concept of territory. Merging insights from Science and Technology Studies with geographical studies of territory, this thesis asks how the sciences of the Earth may serve as technologies of territory. How, in other words, might states use science to forge a seemingly stable ordering of space which is extendable through time from a world defined by chaos, instability, and incessant change? To address this question, the thesis mobilises two instances of territory construction in Greenland during the early Cold War, when two differently motivated intruding powers, Denmark and the USA, both used Earth Science as a means of territorialising Greenlandic geographies. Firstly, the high-profile case of Danish uranium prospecting at Ilímaussaq exemplifies Danish attempts at casting Greenland as a space of extraction – as land upon which the nation might capitalise. Secondly, the practices of two interrelated US military scientific expeditionary outfits are used to show how the US sought to cast Greenlandic landscapes as a military terrain serving as an extra-sovereign extension of American state space. Despite the apparent differences between these two cases, the empirical findings of this thesis complicate simplistic distinctions between land and terrain, the voluminous and the horizontal, and also between bio- and geo-political orderings of state space. Reading across these two instances of territory formation, the thesis draws attention to the temporal and processual characteristics of territory by showing how territory’s formation in Greenland was informed by a complicated interplay between stability and flow rather than a rigid ‘logic of solids’. Building on Stuart Elden’s work on territory and Elizabeth Grosz’s philosophies of Earth, this thesis thus argues that territory is, in part, a geo-political technology which allows the state to attune to the rhythmic forcefulness of Earth and draw on and over its latent power

    Earth Resources: A continuing bibliography with indexes

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    This bibliography lists 475 reports, articles and other documents introduced into the NASA scientific and technical information system between January 1 and March 31, 1984. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economical analysis
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