Tecniche integrate di Remote Sensing e GIS a supporto della stima del potenziale fotovoltaico su tetti in aree urbane

Le ultime linee guida approvate dal Governo Italiano per sostenere finanziariamente il fotovoltaico (PV) e lo sviluppo della produzione di energia solare (Quarto e Quinto Conto Energia, Gennaio 2012 e succ.), al fine di evitare il consumo di suolo in aree agricole o naturali, comprendono indicazioni specifiche che rendono più vantaggiosa l’installazione d’impianti su tetti o superfici di copertura di edifici. In questo contesto diventa importante, per una adeguata attività di pianificazione e monitoraggio del PV, la mappatura estensiva delle superfici a disposizione, coincidenti con i tetti e l’accurata valutazione del loro potenziale fotovoltaico. Dal momento che tali coperture si trovano soprattutto nelle aree urbane o industriali, in cui fattori come eterogeneità tridimensionale, albedo, torbidità atmosferica ed ombreggiamenti reciproci influenzano in modo significativo l’irraggiamento solare locale, è necessario tenere conto adeguatamente di questi elementi mediante una mappatura GIS tridimensionale ed avanzati strumenti di modellazione, in modo da stimare efficacemente la radianza solare disponibile a livello dei tetti. La metodologia implementata, basata su tecniche di telerilevamento e GIS, ha permesso di valutare e mappare la radiazione solare globale su tutti i tetti presenti nel territorio del Comune di Avellino. Partendo da dati di tipo LIDAR, è stato ottenuto in primo luogo il DSM di tutta l’area di interesse (~ 42 Km2), quindi il modello tridimensionale di ogni edificio da cui sono stati derivati i parametri geometrici di tutte le coperture. Per tenere conto della trasparenza atmosferica e della percentuale di radiazione solare (diffusa/diretta) sulle superfici di interesse, sono stati utilizzati i dati e gli strumenti applicativi presenti sul sito web PVGIS, sviluppato dalla UE. L’elaborazione finale, basata sull’utilizzo di strumenti GIS anche di tipo open source, ha permesso di ottenere le mappe di radianza solare e di potenziale PV per tutti i tetti presenti nell’area di studio.The last guidelines approved by Italian government to financially support the solar Photovoltaic (PV) Energy production development (Fourth and Fifth feed-in-scheme, January 2012 and later), in order to avoid soil consumption in agricultural or naturals areas, include specific indications for more advantageously funding the installations exploiting roofs or covers surfaces. In this context it becomes important, for a suitable PV planning and monitoring, the extensive mapping of the available surfaces extent, usually corresponding to covers and properly assessing their quality in term of PV potential. Since the covers are mainly located in urban or industrial areas, whose 3D heterogeneity, albedo, atmospheric turbidity and casting shadows significantly influence the local solar irradiance, it is necessary to suitably account for these distributed factors by means of GIS mapping and advanced modeling tools in order to provide realistic estimates of solar available radiance at roofs level. The implemented methodology, based on remote sensing techniques, has allowed to estimate and map the global solar radiance over all the roofs within Avellino municipality. Starting from LIDAR data, DSM of the entire area of interest (~42 Km2) has been firstly obtained; then the 3D model of each building and related cover has been derived. To account for the atmospheric transparency and the related time-dependent diffuse/direct radiation percentage on the area, data and tools from EU PVGIS web application have been also used. The final processing to obtain the solar radiance maps has been carried out using specific software modules available within commercial and open-source GIS packages

Il GIS nei temi di cooperazione internazionale: il fenomeno del land grabbing

The land grabbing phenomenon, which is distinguished and characterized by its spatial nature, has invested vast areas of the world and in particular the African continent. With the suppo rt of GIS , the socioeconomic conditions of these territories are classified, characterized and reported in cartographic representations having the advantage of assessing the phenomenon where physically and territorially happ ens. The land grabbing phenomenon continues inexorably to steal land to disadvantaged pop ulations that typically inhabit rural soc ieties: the aim of this article, and in particular of the case study on Mozambique, it’s to show a way to monitor the phenomenon, and, although in a descriptive way, to identify areas with greater vulnerability

Il GIS nei temi di cooperazione internazionale: il fenomeno del land grabbing

The land grabbing phenomenon, which is distinguished and characterized by its spatial nature, has invested vast areas of the world and in particular the African continent. With the suppo rt of GIS , the socioeconomic conditions of these territories are classified, characterized and reported in cartographic representations having the advantage of assessing the phenomenon where physically and territorially happ ens. The land grabbing phenomenon continues inexorably to steal land to disadvantaged pop ulations that typically inhabit rural soc ieties: the aim of this article, and in particular of the case study on Mozambique, it’s to show a way to monitor the phenomenon, and, although in a descriptive way, to identify areas with greater vulnerability

A proposito di UNIX

Consiglio Nazionale delle Ricerche (CNR). Biblioteca Centrale / CNR - Consiglio Nazionale delle RichercheSIGLEITItal

Il GIS come supporto ai processi di pianificazione territoriale

Paper presented at 1. Conference of MondoGIF 'Dalla tecnologia alle applicazioni', Rome (IT), 26-28 May 1999Consiglio Nazionale delle Ricerche - Biblioteca Centrale - P.le Aldo Moro, 7 , Rome / CNR - Consiglio Nazionale delle RichercheSIGLEITItal

Il GIS negli studi di sostenibilità delle energie rinnovabili

Projections to 2020 indicate that renewable energy sources (RES) could cover, from 20 to 30 percent of the world's energy needs. To implement an effective e-governance in this direction, it is necessary to implement new methodologies to support decisionmaking in the local energy planning. The environmental impact is one of the main concern existing at different levels, in addition to the growing soil consumption in Europe. A significant problem for some types of plants, mainly solar and wind power, is the interaction of the devices with the surrounding environment, with possible negative effects in terms of visual impact and soil consumption. It is, therefore, very important to define which weight can have different impacts and to consider all possible scenarios

Geomatica per l'informazione climatica locale e per i servizi climatici: un caso di studio per l'area mediterranea.

The present paper describes a methodology developed for overcoming problems linked to the climate changes science in order to make it effectively accessible to end users: stakeholders, policy makers, citizens. In today’s scientific approach, communication on climatic information and on climatic changes condition, has to be clear, accessible and perceptive to everyone, to definitely arise the right interest on such problem. Results coming from climatic changes Research and Development projects, in addition to being accepted by policymakers, that have to take future decisions and practical actions to mitigate their possible negative effects, must also be recognized and believed by ordinary citizens that have to understand and accept restrictions, for example in energy consumptions, potentially affecting their habit of life. Accordingly, it will be necessary to regenerate policy-making world so as to make it more direct and potentially open to networking interactive communication tools

LA GEOMATICA PER LA VALUTAZIONE DELLA RISORSA ENERGIA DAL MARE: PROGETTAZIONE E SVILUPPO DSS -WEB GIS “WAVES ENERGY”

GIS methodologies and technologies are able to provide useful tools for the assessment of sea-waves energy potential, by evaluating both the exploitability of such resource, both the environmental/social impacts in open sea and/or in the coastal areas. The DSS-WebGIS application developed (called "Waves Energy") is a tool for providing and publishing different geospatial data, sharing information with a wide range of external user, in order to support specific tasks, such as forecasting, new installations planning and existing infrastructures management

LA GEOMATICA PER LA VALUTAZIONE DELLA RISORSA ENERGIA DAL MARE: PROGETTAZIONE E SVILUPPO DSS -WEB GIS “WAVES ENERGY”

GIS methodologies and technologies are able to provide useful tools for the assessment of sea-waves energy potential, by evaluating both the exploitability of such resource, both the environmental/social impacts in open sea and/or in the coastal areas. The DSS-WebGIS application developed (called "Waves Energy") is a tool for providing and publishing different geospatial data, sharing information with a wide range of external user, in order to support specific tasks, such as forecasting, new installations planning and existing infrastructures management