Spyridon Lykoudis's research while affiliated with University of Cyprus and other places

Publications (32)

Article
Full-text available
The large-scale surface-water monitoring infrastructure for Greece Open Hydrosystem Information Network (Openhi.net) is presented in this paper. Openhi.net provides free access to water data, incorporating existing networks that manage their own databases. In its pilot phase, Openhi.net operates three telemetric networks for monitoring the quantity...
Article
This work exploits available data from energy audits of about 350 Hellenic school buildings from the national electronic repository that have been performed for issuing energy performance certificates The average construction characteristics of the building’s envelope and technical characteristics of the electromechanical installations are defined...
Chapter
This article presents the Biometeorological Aspect of Thermal environment and Health (BeAT Heat) project, an integrated framework for the assessment of thermal perception that could assist in developing successful public health measures by local authorities and policymakers. BeAT Heat is conducted in Cyprus, a country of the eastern Mediterranean r...
Conference Paper
This paper examined the characteristics of building envelope and technical installations of existing Hellenic non-residential buildings, in an attempt to offset the lack of information about non-residential building stock. The work exploited data collected from about 2450 energy audits and submitted as input files to the official national register...
Conference Paper
Based on the most recent buildings’ Census, Hellenic Non-Residential Building Stock includes about 790,000 exclusive-use buildings, representing 21% of the national building stock, with the majority being wholesale and retail trade & offices. This work presents average primary energy use intensities for five selected non-residential building uses,...
Article
Full-text available
Image velocimetry is a popular remote sensing method mainly because of the very modest cost of the necessary equipment. However, image velocimetry methods employ parameters that require high expertise to select appropriate values in order to obtain accurate surface flow velocity estimations. This introduces considerations regarding the subjectivity...
Article
Full-text available
People exposed to heat experience symptoms of varying severity, from mild manifestations to heat stroke. Due to global warming, interest in the impact of heat exposure on human health has been increasing. This study investigated the association between outdoor thermal conditions and heat-related symptoms experienced by pedestrians in a temperate-Me...
Preprint
Full-text available
The measurement of river discharge under various conditions is of paramount importance in hydrology. The traditional method to make a discharge measurement, and the only option until recently, is very tedious and sometimes even dangerous. For this reason, nowadays, remote sensing techniques are employed to reduce the need for traditional discharge...
Article
Full-text available
This article presents data collected during a web-based survey on expressions used to describe thermal sensation and comfort in the Greek language. The survey used a structured questionnaire and delivered through Google Forms. The survey was promoted through social networks and conducted in spring 2019. The data presented herein comprise of the par...
Conference Paper
Full-text available
The Open Hydrosystem Information Network (OpenHi.net) is a state-of-the-art information infrastructure for the collection, management and free dissemination of hydrological and environmental information related to Greece’s surface water resources. It was launched two years ago as part of a the national research infrastructure “Hellenic Integrated M...
Article
Full-text available
Several thermal indices have been proposed for quantification of various aspects of the thermal environment. Their applicability however is a methodological conundrum. The aim of the present study (part of the Biometeorological Aspect of Thermal environment and Health (BeAT Heat) project) was to assess the outdoor thermal environment using data on...
Article
Thermal scales assess thermal environments in terms of thermal sensation and comfort. The number of scale’s categories and their verbal realization/labels, especially when translated for local applications, are subjects of research. This study examined variations from the ISO 10551 thermal scale when translated into Greek language. We conducted an...
Article
Full-text available
OPEN ACCESS: https://doi.org/10.3390/en13082100 This work exploits data from 30,000 energy performance certificates of whole nonresidential (NR) buildings in Greece. The available information is analyzed for 30 different NR building uses (e.g., hotels, schools, sports facilities, hospitals, retails, offices) and four main services (space heating,...
Article
The article was published without special issue designation resulting in regular issue compilation. The author group and publisher regret the error and ask the article be considered for Special Issue: Subjective approaches to thermal perception.
Article
Full-text available
This data article presents the data collected through an extensive research work conducted in urban areas in the city of Athens (Greece) during the period 2010–2012. Data concerns 2287 questionnaires and microclimatic data collected through interviews to the visitors of the examined areas with parallel monitoring of the urban microclimatic characte...
Article
Full-text available
Outdoor air pollution and especially particulate matter pollution is a major environmental health issue that raises concerns of scientists and policy makers. This study focuses on air quality perception in relation to particulate matter in order to find potential patterns. Field questionnaire-based surveys were conducted among pedestrians on two ce...
Article
The influence of physiological acclimatization and psychological adaptation on thermal perception is well documented and has revealed the importance of thermal experience and expectation in the evaluation of environmental stimuli. Seasonal patterns of thermal perception have been studied, and calibrated thermal indices’ scales have been proposed to...
Article
This study investigates the potential for passive cooling patterns inside the urban fabric in the Mediterranean climate city of Athens (Greece), especially with regard to quantify air temperature reduction and thermal comfort amelioration at the neighbourhood scale. Using both field measurements and an urban microclimate simulation model, we assess...
Article
This study investigates the potential for passive cooling patterns inside the urban fabric in the Mediterranean climate city of Athens (Greece), especially with regard to quantify air temperature reduction and thermal comfort amelioration at the neighbourhood scale. Using both field measurements and an urban microclimate simulation model, we assess...
Article
The standard efficiency of photovoltaics (PV) often deviates from the one achieved under real outdoor conditions. This paper presents relevant data collected using a small multi-crystalline photovoltaic array at an outdoor experimental facility located north of Athens. Measurements during summer and winter periods were used to quantify the PV perfo...
Article
Perception plays a significant role on people's response to preventive measures. In the view of public awareness, the aim of this study was to explore factors that affect air quality perception and to reveal its potential patterns. Air quality perception of individuals, in terms of dust and overall air quality, was examined in relation to air pollu...
Article
Mild heat-related health effects and their potential association with meteorological and personal parameters in relation to subjective and objective thermal sensation were investigated. Micrometeorological measurements and questionnaire surveys were conducted in an urban Mediterranean environment during a warm, cool, and a transitional season. The...
Article
A simple thermo-physiological model of outdoor thermal sensation adjusted with psychological factors is developed aiming to predict thermal sensation in Mediterranean climates. Microclimatic measurements simultaneously with interviews on personal and psychological conditions were carried out in a square, a street canyon and a coastal location of th...
Article
The water cycle is one of the key parameters that determine the climatic character of a region. Stable isotopes have long been established as a valuable tracer in the study of the origin, dynamics and interactions between the various components of the hydrologic cycle, both of the present and of the past. Even though significant efforts have been m...
Article
The water cycle is one of the key parameters that determine the climatic character of a region. Stable isotopes have long been established as a valuable tracer in the study of the origin, dynamics and interactions between the various components of the hydrologic cycle, both of the present and of the past. Even though significant efforts have been m...
Article
This paper reviews all available stable isotopic data concerning precipitation and spring water in Greece, from the 1960s until today. Spatial variability is investigated in order to provide basic information and identify the locally significant parameters that affect isotopic distributions. The area of interest was partitioned into eight sections...
Article
This study examines the effect of the total solar eclipse of March 29th 2006, on some parameters of the atmospheric surface layer. The eclipse effects on the mean, but also turbulent parameters of the wind were studied at Kastelorizo, a small island of southeastern Greece situated within the totality path of the eclipse. Although the eclipse effect...
Article
Full-text available
In order to confront pollution events concerning the city of Elefsis, in the environmentally aggravated area of Thriassion Plain, an effort is undertaken to create a model forecasting maximal daily concentrations of NOx (NO2+NO), NO2 and O3. The data analyzed were obtained from the Bureau of Pollution Control and Environments Quality based in Elefs...
Article
Full-text available
This paper presents the results of air quality measurements performed during the period 1986-2006, at the Thriassion Plain, one of the most industrialized areas of Greece. Intense industrial activities, road traffic and the rapidly growing activity of the local harbour of Elefsis are the main reasons for the observed degradation of the environment....
Article
It is well known that air pollution is one of the major factors affecting human health and the activities in a town. Among the various air pollutants an interesting one, especially for sunny climates, is the reactive O3. O3 varies significantly through the year; it is therefore very important to know the onset and the duration of the warm period of...
Article
Coupling a building to the ground as a heat sink through earth-to-air heat exchangers can reduce the cooling energy demand during summer. The fans for circulating the air through the heat exchangers are usually grid connected. However, given that the cooling loads are almost in phase with the available solar irradiance, an innovative system couplin...
Article
The impact of shading devices on the airflow across large openings during single-sided natural ventilation is investigated through an extensive experimental campaign. To quantify this impact the approach of the correction coefficient, already applied in non-shaded openings is used. The proposed methodology is independent from the climatic condition...

Citations

... Daily data collected for more than 30 countries, representing over one-third of global electricity demand, show that the extent of demand declines depends on the duration and stringency of lockdowns. On average we find that every month of full lockdown reduced the demand by 20% on average, or over 1.5% on an annual basis [5]. Therefore, focusing on methods to optimize the energy efficiency and promoting sustainability in the building's component while considering the quality of indoor spaces has been one of the trend topics among researchers [6][7][8][9][10][11][12][13]. ...
... Field surveys were conducted as part of the Biometeorological Aspect of Thermal Environment and Health (BeAT Heat) project that is being carried out in the Republic of Cyprus (2019-2022). BeAT Heat focuses on the impact of the urban thermal environment in a Mediterranean climate on health (Pantavou et al. 2019). ...
... Acquisition of satellite remote sensing data in both fine spatial and temporal scales is challenging and may not be available over a region of interest. Therefore, to address this challenging issue, the potential of Global Navigation Satellite System-Reflectometry (GNSS-R) [i.e., data from the Cyclone GNSS (CYGNSS) constellation of GNSS-R satellites], and optical techniques such as image velocimeters (Pizarro et al. 2020;Rozos et al. 2020) were explored in several studies for flood extent and inundation mapping (Chew et al. 2018;Chew and Small 2020). ...
... The image velocimetry tool employed in this study was Free-LSPIV [24] (see Supplementary Materials). In order to improve the sharpness of the video frames, Free-LSPIV employs application of the Gaussian blur filter, image subtraction, conversion to greyscale, and contrast adjustment; the latter involves turning off all the pixels with brightness lower than a threshold. ...
... Tracking urban development on a spatial and temporal scale is essential to improve our understanding of changes in cities and their impact on natural resources and environmental systems (Kadhim et al. 2016). The effect of the thermal environment on population is of the utmost importance due to global warming (Pantavou et al. 2020). The complex impacts of aerosols cause other indirect forcing, the balance of which is a cooling effect. ...
... hunger, thirst, hot, cold) and the intensity of pleasurable/unpleasant sensations [84]. Investigations on language and semantics in the literature on thermal comfort shows the importance of verbal expressions and language in reference to measuring personal thermal sensations and their influence on the perception of thermal comfort [154]. Conversely, communication strategies play an important role in shaping cooling needs including the ways in which messages are transmitted. ...
... Open Hydrosystem Information Network (Openhi.net) was created to remedy such shortcomings: it is a large-scale infrastructure for collecting, processing and storing data on the surface waters of Greece, serving applied, research and operational needs [6]. The tenet underlying Openhi.net is openness, free access to data and monitoring infrastructure. ...
... A total of 12 articles were published online in the open access journal, Energies, and the article reprints were collected in a bounded volume, published in early 2021 [3]. Among them, eleven contributions were research papers [4][5][6][7][8][9][10][11][12][13][14] and one was a review paper [15], referenced in the order of their individual publication. In terms of the geographical distribution for the affiliations of the 54 contributing authors, they originated from seven countries, including Czech Republic, Greece, Italy, Korea, Poland, Spain and Sweden. ...
... Relevant scientific peer-reviewed journal articles PET (N = 93) Tsitoura et al., 2014;Watanabe et al., 2014;Pantavou et al., 2014;Jeong et al., 2016; THI/DI (N = 8) Gómez et al., 2004;Tseliou et al., 2010;Eludoyin & Adelekan, 2013;Pantavou et al., 2014;Ruiz and Correa, 2015;Chow et al., 2016;Giannakis et al., 2016;Schnell et al., 2016;WBGT (N = 8) Gómez et al., 2004;Lin et al., 2013;Pantavou et al., 2014;Tsitoura et al., 2014;Chow et al., 2016;Song & Jeong, 2016;Fang et al., 2019;Pantavou et al., 2020aPantavou et al., , 2020bOpT (N = 6) Hwang, 2010;Yang et al., 2013a;Wang et al., 2017;Fang et al., 2018;Wang et al., 2018 *(SET* and OUT_SET* are listed together as 20 studies). Brazil and in Vitoria, Brazil (da , PET thresholds of extremely hot and extremely cold categories are missing in Athens, Greece and the thresholds of "slightly hot" and "slightly cold" were excluded in Konya, Turkey . ...
... Jamei and Rajagopalan (2019) investigated the effects of street design on physiological equivalent temperature, air temperature, and mean radiant temperature. Air quality is usually explored in terms of people's exposure to air pollutants (Pantavou et al. 2018;Pigliautile et al. 2020;Samad and Vogt 2021). Regarding acoustics, soundscape (the acoustic environment as perceived by a person in context) research has been growing recently (Aletta et al. 2019), with several studies using this approach to evaluate acoustic comfort in urban environments Mascolo et al. 2020;Mancini et al. 2021;Jo and Jeon 2021a;Yang et al. 2022). ...