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Volume XIV |

An object based building extraction method and classification using high resolution remote sensing data

Abstract: The increasing availability of the high spatial resolution satellite images has provided a new data source for building extraction. This paper proves the concept of object oriented classification using high-resolution satellite data (Cartosat-1 satellite data fused with IRS-1C, LISS IV data) for automatic building extraction using eCognition software. In this study, the overall accuracy of classified image is 0.94 and Kappa accuracy is 0.92. The producer accuracy for building, vegetation and shadow are 0.9745, 1.0 and 0.8999, respectively, whereas user accuracy for building, vegetation and shadow are 1.0, 0.9475 and 1.0 respectively. The classification overall accuracy is based on TTA mask (training and test area mask) and it is 0.98 and Kappa accuracy is 0.96. The producer accuracy for building, forest and shadow are 1.0, 1.0 and 0.7344, respectively and user accuracy for building, vegetation and shadow are 1.0, 0.9475 and 1.0, respectively.

Volume XIV |

Potential usage of met mast datasets for climatic parameters monitoring in Tulcea County, Romania

Abstract: In order to evaluate the potential usage of high-accuracy climatic data measured continuously in the frame of newly developed renewable energy facilities in Romania for real-time local scale monitoring of climatic parameters, we used 2 years (May 2009 – May 2011) of in-situ climatic datasets measured at 7 met masts locations in Tulcea County. Realization of detailed thematic climatic maps afforded a more focused view of the spatial distribution and of the local patterns for air temperature, relative humidity and pressure, wind speed, direction and energy in the frame of the study site. On the basis of these preliminary results, we emphasize the great potential of similar in-situ real-time measured data to be integrated in the future, together with the data provided by meteorological stations, into complex databases. Their usefulness emerges from their capabilities of being integrated in specialized web-GIS platforms for real-time or near-real-time monitoring of small spatial scale climatic parameters and of contributing to climatic models calibration, weather forecasting, feeding early warning systems for local climatic hazards or to rapid small spatial scale assessment of air pollutants dispersal following different scenarios of wind speed and direction. Further research and initiatives are necessary in the near future for the creation and implementation of these databases in order to become operational.

Volume XIV |

Biourbanism – a solution for mitigation of urban climate. Case study Bucharest city

Abstract: As a living environment or biotope of the human species, urban structures must meet not only the economic, social and political rights of the people, but also their biological and neurophysiologic requirements. A new scientific approach to urban planning is biourbanism or organic urbanism, which considers the urban environment as being a hyper-complex living thing. From the scientific point of view, this approach opens the way to new scenarios for urban planning research. The aim of the study is to promote this modern concept of urban planning for Bucharest City in the context of its climate vulnerability. The objectives of our investigation are the following: analyzing the dynamic of climate conditions of the city, highlighting the weather risks for the population and devising scenarios for implementing the concept in Bucharest. The research methodology focused on the following: the discussion of conceptual framework based on specialty literature, the calculation of bioclimatic indices in order to assess the city’s vulnerability to climate conditions and the presentation of “biourban” improvement models applicable to urban fabric samples. The study reveals the vulnerability of Bucharest City in relation to the specific risks associated to the weather phenomena of the summer season (high temperatures and moisture deficit), as argument in favour of preparing implementation scenarios for biourbanism ideas.

Volume XIV |

Considerations on the influence of micro urban heat islands to the temperature – humidity index in Craiova

Abstract: According to National Administration of Meteorology, July month of 2015, will represent one of the longest periods with canicular temperatures in the last decades. In Oltenia region and in Craiova city, too, yellow or orange code warning, had to be declared. To determine thermal discomfort sensation felt by the population of Craiova, experimental research concerning micrometeorological measurements of the real temperature and relative humidity that contribute to the local Temperature – Humidity Index (THI) value was performed. According to the experimental research results, con-firmed by using thermovision too, within Craiova, four micro urban heat islands were identified. Despite the low mean value of relative humidity, due to the temperature’s high mean value, in these hot spots the THI average was 94.93, and the thermal discomfort sensation would have made necessary special protection measures. The same air micrometeorological parameters in these four hot spots were compared with the ones recorded in English Park where due to vegetation and trees’ shadow, the THI average was 84.87, thus the thermal discomfort sensation would have made necessary adequate protection measures. The paper proposes several practical methods that would be utilized in order to decrease the pavements’ and buildings’ walls temperatures, or to increase the vegetation surfaces that contribute to the THI de-creasing in the micro urban heat islands of Craiova city.

Volume XIV |

A model of land suitability general analysis for new infrastructure projects in the Bârsa country (Romania)

Abstract: This study focuses on a geographical area with historical connotations, located in the internal curvature of the Carpathians. The prospects of transport network in this area are geographically conditioned mainly by the morphodynamics of the surrounding relief. The working methodology was based on the ArcGIS analysis of four main factors for the transport infrastructure: geodeclivity, lithology, pedology and land use. The land suitability analysis must represent the preceding stage of any infrastructure project because it perfectly highlights the degree of favourability of new designed routes and exempts from any additional costs for maintenance, rehabilitation and redesign in the post construction stage, improving the project reliability prediction. The land suitability for the transport infrastructure is an issue of present interest for this region since in the last century the transport network has exponentially diversified and expanded, more pronounced and accelerated in recent years, due to increased road and railway traffic. This global trend requires the resize and adaptation of the transport infrastructure to the new mobility needs of society. With this development, the areas suitable for the transport infrastructure have high urban saturation. Thus, new routes are necessary on less suitable lands that must be analyzed for the optimization and sustainability of new routes converging in the Bârsa Country. The final map resulting from the GIS analysis provides the focused area with positive prospects for the transport infrastructure development, particularly in the depressionary area, new routes of moderate suitability being outlined for the mountainous area.