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Auflistung nach Autor:in "Wald, Lucien"

1 - 10 von 12
  • Konferenzbeitrag
    A Proposal for a Thesaurus for Web Services in Solar Radiation
    (Environmental Informatics and Systems Research, 2007) Gschwind, Benoit; Menard, Lionel; Ranchin, Thierry; Wald, Lucien; Stackhouse, Paul
    Metadata are necessary to discover, describe and exchange any type of information, resource and service at a large scale. A significant amount of effort has been made in the field of geography and environment to establish standards. Efforts still remain to address more specific domains such as renewable energies. This communication focuses on solar energy and more specifically on aspects in solar radiation that relate to geography and meteorology. A thesaurus in solar radiation is proposed for the keys elements in solar radiation namely time, space and radiation types. The importance of time-series in solar radiation is outlined and attributes of the key elements are discussed. An XML schema for encoding metadata is proposed. The exploitation of such a schema in web services is discussed. This proposal is a first attempt at establishing a thesaurus for describing data and applications in solar radiation.
  • Konferenzbeitrag
    An OGC Web Processing Service for assessing the quality of solar radiation measurements
    (Proceedings of the 27th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2013) Espinar, Bella; Gschwind, Benoit; Wald, Lucien; Thomas, Claire
    A service is presented that assesses the quality of measurements of daily global irradiation or means of global irradiance acquired by a ground station. Measurements are checked against models resulting in a measure of plausibility. This on-line service obeys the WPS (Web Processing Service) standard of the Open Geospatial Consortium. It is free of use and can be integrated into routine operations and Web portals thanks due its interoperability capability.
  • Konferenzbeitrag
    Benefits and Limits of OGC-Web Services to the new SoDa Service on Solar Energy
    (Proceedings of the 27th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2013) Thomas, Claire; Saboret, Laurent; Wey, Etienne; Wald, Lucien
    The SoDa Service (website: www.soda-is.com) is providing an easy and standardized access to valuable information related to solar energy for professionals. Several providers offer via the SoDa Service an access to for-free and forpay Web services and off-line services delivering data on solar radiation, atmospheric optics, position of the sun and many others. Since the launch of the Service in 2003, the SoDa team is making efforts to improve the quality of the service to customers. After the duplication of the whole system in 2010 for a better reliability, and the development of a more esthetic website in summer 2012, the team is now populating the new SoDa Service with new Web services. This is a perfect opportunity to explore different standards in order to increase the dissemination and acceptation of the existing and new services by the community of users. After several trials, the Open Geospatial Consortium (OGC) standards were selected. This communication discusses the OGC-compliant Web services and how the decision for developments within the new SoDa website was taken.
  • Konferenzbeitrag
    Development and Integration of a Local Solar Atlas into a GEOSS compliant Global Spatial Data Infrastructure (GSDI)
    (Proceedings of the 27th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2013) Menard, Lionel; Wald, Lucien; Blanc, Philippe; Gschwind, Benoît
    In the framework of the Architecture Implementation Pilot - Phase 5 (AIP-5) of GEO (Group on Earth Observation) and with the support of the European Commission FP7-project (Seventh Framework Program) ENDORSE (ENergyDOwnstReam SErvices - Providing energy components for GMES; 2011-2013), we have developed a scenario to provide a free-access infrastructure to discover and exploit the solar potential of the Provence Alpes Cote d Azur (PACA) region located in the South East of France. Several tens of calibrated maps of solar irradiation have been produced at a high spatial resolution (200 m) allowing to perform local level studies, i.e. at 1/250 000 scale. Providing online map and time series services offers an interesting trade-off between an educative and a fully expert approach to access solar radiation information as on-line local atlas. It is suitable for decision-support in solar energy policy planning and private investment as well as for educational purpose to promote solar energy. A Global Spatial Data Infrastructure (GSDI) has been developed that includes a community portal, a geographical server for hosting geospatial data, a geospatial data catalog allowing search and discovery of data of interest and a WebGIS client providing a user friendly application gathering in a single and dedicate GUI (Graphical User Interface) all data needed for practitioner to enable decision making for energy related projects. Thanks to the respect of international standards enabling interoperability, the components of the GSDI has been integrated and connected among others to larger international initiative such as GEOSS (Global Earth Observation System of Systems) and UNEP-GRID (United Nation Education Program) allowing a wider dissemination of the resources for the benefit of data providers on the one hand and of the renewable energy community on the other hand.
  • Konferenzbeitrag
    Development of a GIS-based spatial model for the estimation of sustainable biomass potentials in different regions of North West Europe
    (Proceedings of the 27th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2013) Menard, Lionel; Wald, Lucien; Blanc, Philippe; Gschwind, Benoît
    Within the EU-project BioenNW a GIS-based spatial model for the estimation of the amount and the spatial distribution of different biomass residues, originating e.g. from agriculture, forestry and municipal waste, is being developed using the integrated development environment Eclipse together with the programming language Python and the software ArcGIS. This study presents the model structure and exemplary results for the estimation of residue potentials from cereals and root crops cultivation on arable land in the district Dueren (Germany). Besides to theoretical potentials, so called sustainable potentials are estimated assuming different types of ecological and techno-economic restrictions. The sustainable residue potentials are estimated for the EEA reference grid (1 km) including maps data on land cover, protected areas, soil erodibility and soil organic carbon content together with statistical data on land use and crop yields for the year 2010.
  • Konferenzbeitrag
    Early achievements towards an automatic assessment of the uncertainty in solar irradiation using web services
    (Innovations in Sharing Environmental Observations and Information, 2011) Wald, Lucien; Blanc, Philippe; Espinar, Bella; Gschwind, Benoit; Lefevre, Mireille; Menard, Lionel; Wald, Fabien; Hoyer-Klick, Carsten; Schroedter-Homscheidt, Marion; Thomas, Claire
    A long standing effort aims at creating and operating an automatic procedure for the assessment of the uncertainty in solar radiation data and the delivery of this information to users. This communication presents the early achievements. The overall objective can be seen as composed of three specific objectives: 1) assessing the uncertainty of the satellite-derived irradiation compared to a reference; 2) as the uncertainty depends on atmospheric conditions, devising a model that can predict uncertainty at any location and any time; 3) delivering information to users. As irradiation data are already delivered through the SoDa Service and the IEA SHC#36 / MESOR portal, it is natural to use these dissemination media and to embed the uncertainty quantities in the data flow. The strategy is to implement the overall procedure by the means of interoperable Web services. Two ensembles of Web services are being developed: one for the assessment protocol, the other for the model of uncertainty.
  • Konferenzbeitrag
    Environmental impact assessment of electricity production by photovoltaic system using GEOSS recommendations on interoperability
    (Innovations in Sharing Environmental Observations and Information, 2011) Menard, Lionel; Gschwind, Benoît; Blanc, Isabelle; Beloin-Saint-Pierre, Didier; Wald, Lucien; Blanc, Philippe; Ranchin, Thierry; Hischier, Roland; Gianfranceschi, Simone; Smolders, Steven; Gilles, Marc; Grassin, Cyril
    Within the Architecture Implementation Pilot (AIP-3) of GEOSS, we have developed a scenario called “environmental impact assessment of the production, transportation and use of energy for the photovoltaic (PV) sector through Life Cycle Assessment (LCA)”. It aims at providing decision-makers and policy-planners with reliable and geo-localized knowledge of several impacts induced by various technologies of the PV sector. The scenario is implemented in the GEOSS Common Infrastructure (GCI) and benefits from the GEOSS interoperability arrangements. The FP7-co-funded EnerGEO project provides a GEOSS compliant Catalogue Service for the Web (CSW) that permits to discover the Web Processing Service (WPS) allowing computation of the environmental impact. A WebGIS client provided by the FP7-co-funded GENESIS platform allows users to interact with geospatial data and computation processes. This scenario has proven to be an efficient tool to disseminate knowledge on environmental impacts related to PV because of the GEOSS capabilities in interoperability.
  • Konferenzbeitrag
    HelioClim-1: 21-years of daily values in solar radiation in one-click
    (Proceedings of the 27th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2013) Wald, Lucien
    The HelioClim-1 database offers daily means of surface solar irradiance for the period 1985-2005 and has been created from archives of images of the Meteosat First Generation satellites. Expectations of users regarding access to similar data were carefully analyzed, especially regarding dissemination of and access to data, and were taken at the heart of the design of the database. Efforts were made to deliver time-series spanning over 21 years very rapidly on the Web with a limited number of clicks. The soundness of the approach by MINES ParisTech is now rewarded by the large number of access to HelioClim-1, approximately 400 per workday, and by the number of scientific publications using these data. The Global Earth Observation System of Systems (GEOSS) has declared HelioClim-1 as a Data Collection of Open Resources for Everyone (GEOSS Data-CORE) in November 2011. A Web processing service (WPS) obeying the OGC (Open Geospatial Consortium) standard has been developed. Being interoperable, it can be invoked in operational routines, such as those under development in the European funded ENDORSE and MACC projects.
  • Konferenzbeitrag
    SoDa: A Project for the Integration and Exploitation of Networked Solar Radiation Databases
    (Environmental Communication in the Information Society - Proceedings of the 16th Conference, 2002) Wald, Lucien; Albuisson, Michel; Best, Clive; Delamare, Catherine; Dumortier, Dominique; Gaboardi, Elena; Hammer, Annette; Heinemann, Detlev; Kift, Richard; Kunz, Stefan; Lefevre, Mireille; Leroy, Sebastien; Martionli, Mario; Menard, Lionel; Page, John; Prager, Tamas; Ratto, Corrado; Reise, Christian; Remund, Jan; Rimoczi-Paal, Aniko; Van der Goot, Erik
    The project SoDa (solar data) answers the needs of industry and research for information on solar radiation parameters with a satisfactory quality. The methodology is user-driven with a large involvement of users in the project, who gauge the progresses and achievements. A prototype service has been developed, using Internet technology, that integrates and efficiently exploits diverse networked information sources to supply value-added information. Access to data and applications has been greatly improved; efforts were made on interpolation methods and satellite data processing to achieve better quality and increase time and space coverage of the information. Applications were developed or networked to supply information actually needed by customers, and not only raw data.
  • Konferenzbeitrag
    Test of Several Approaches for the Composition of Web Services in Meteorology
    (Environmental Informatics and Systems Research, 2007) Gschwind, Benoit; Wald, Lucien; Mahl, Robert; Irigoin, Francois; Menard, Lionel
    Composition of web services is a powerful means to answer user needs in many domains. This communication focuses on applications in meteorology. This domain presents several particularities which are discussed. We present an overview of three main types of approaches in composition of web services: static plan, IA-plan and theorem proof. We confront these types of approaches to the specific case of meteorology which is not well studied by the research community in web services. We design a test bed that is capable of handling the key issues in meteorology. We have selected three approaches. We adapt them to our case and build three prototypes which are used in the test bed to point out weakness and strength of each approach. We find that current approaches do not fulfill needs in meteorology. We recommend an hybrid approach that combines the three in order to obtain an automatic and adaptative composition.