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Dr. Ioannis Charalampopoulos
Agricultural University of Athens, Greece

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0 Spatial Analysis
0 Agrometeorology
0 Bioclimatology
0 R-Language

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Journal article
Published: 24 May 2021 in Atmosphere
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The Balkan peninsula is a transitional zone, in terms of bioclimatic conditions, with an extended and dynamic agricultural sector. Its potential is in peril due to climate change and socioeconomic factors. To assess and evaluate the agrometeorological conditions and the related trends which affect the widely cultivated wheat and maize, a big dataset with high spatiotemporal analysis was utilized. The thermal indices of Growing Degree Days (GDD) and Heat Stress Index (HSI) along with the main frost parameters (frost days, last spring frost, first autumn frost, and free of frost days) were calculated over ten countries for 42 years on a daily basis over a grid of 25 × 25 km. The results indicate a clear cultivations’ expansion ability to northern areas, and higher altitudes and an increased risk of heat caused plants’ injuries. The thermal indices’ trends for maize and wheat cultivation are always positive (Maize: GDD 7.26–11.05 units/yr, HSI 0.52–3.51 units/yr Wheat: GDD 7.2–12.7 units/yr, HSI 0.22–1.77 units/yr). The free of frost (FFD) season is getting longer (trend −0.04 to 0.34 d/yr) because of earlier last spring frost and delayed first autumn frost. The results consist of spatial and temporal illustrations, along with summary statistics and probability density plots for the entire study area and per country.

ACS Style

Ioannis Charalampopoulos. Agrometeorological Conditions and Agroclimatic Trends for the Maize and Wheat Crops in the Balkan Region. Atmosphere 2021, 12, 671 .

AMA Style

Ioannis Charalampopoulos. Agrometeorological Conditions and Agroclimatic Trends for the Maize and Wheat Crops in the Balkan Region. Atmosphere. 2021; 12 (6):671.

Chicago/Turabian Style

Ioannis Charalampopoulos. 2021. "Agrometeorological Conditions and Agroclimatic Trends for the Maize and Wheat Crops in the Balkan Region." Atmosphere 12, no. 6: 671.

Review
Published: 14 April 2021 in Atmosphere
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Climate change is a continuous spatiotemporal reality, possibly endangering the viability of the grapevine (Vitis vinifera L.) in the future. Europe emerges as an especially responsive area where the grapevine is largely recognised as one of the most important crops, playing a key environmental and socio-economic role. The mounting evidence on significant impacts of climate change on viticulture urges the scientific community in investigating the potential evolution of these impacts in the upcoming decades. In this review work, a first attempt for the compilation of selected scientific research on this subject, during a relatively recent time frame (2010–2020), is implemented. For this purpose, a thorough investigation through multiple search queries was conducted and further screened by focusing exclusively on the predicted productivity parameters (phenology timing, product quality and yield) and cultivation area alteration. Main findings on the potential impacts of future climate change are described as changes in grapevine phenological timing, alterations in grape and wine composition, heterogeneous effects on grapevine yield, the expansion into areas that were previously unsuitable for grapevine cultivation and significant geographical displacements in traditional growing areas. These compiled findings may facilitate and delineate the implementation of effective adaptation and mitigation strategies, ultimately potentiating the future sustainability of European viticulture.

ACS Style

Fotoula Droulia; Ioannis Charalampopoulos. Future Climate Change Impacts on European Viticulture: A Review on Recent Scientific Advances. Atmosphere 2021, 12, 495 .

AMA Style

Fotoula Droulia, Ioannis Charalampopoulos. Future Climate Change Impacts on European Viticulture: A Review on Recent Scientific Advances. Atmosphere. 2021; 12 (4):495.

Chicago/Turabian Style

Fotoula Droulia; Ioannis Charalampopoulos. 2021. "Future Climate Change Impacts on European Viticulture: A Review on Recent Scientific Advances." Atmosphere 12, no. 4: 495.

Journal article
Published: 24 January 2021 in Atmosphere
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Olive and vine cultivations are two of the most important crops in Europe, yielding high quality and value food products. The climate change over the Balkans may elevate the agroecological pressure for the established crops and shift their cultivations areas. One of the widely-used agroclimatic indices is the growing degree days (GDD) which accumulates the necessary thermal units for the selected crops. Despite the advances on the agroclimatic research, there are few available methods for spatiotemporal estimation of this useful index. So, this research is focused on the construction of simple and reliable equations for the calculation and projection of olive and vine cultivations’ GDD over the Balkans. The models’ input parameters are the time, the altitude, the distance from the seashore, and the latitude. Its assembly is made by the extracted spatial data, combined with the Agri4Cast dataset for the period of 1980 to 2018 incorporating the regional climate change trend. The results indicate that the most influential parameter is the time, followed by the latitude, for both cultivations. According to the projections, as quantified by GDD, a vast sprawl of olive and vine cultivation areas will have been formed to the northern parts of the studied area. To be more precise, the viticulture could expand spatially by 28.8% (of the Balkans area) by 2040, and by 15.1% to 2060, when the olive cultivations’ area could sprawl 23.9% by 2040 and 20.3% by 2060.

ACS Style

Ioannis Charalampopoulos; Iliana Polychroni; Emmanouil Psomiadis; Panagiotis Nastos. Spatiotemporal Estimation of the Olive and Vine Cultivations’ Growing Degree Days in the Balkans Region. Atmosphere 2021, 12, 148 .

AMA Style

Ioannis Charalampopoulos, Iliana Polychroni, Emmanouil Psomiadis, Panagiotis Nastos. Spatiotemporal Estimation of the Olive and Vine Cultivations’ Growing Degree Days in the Balkans Region. Atmosphere. 2021; 12 (2):148.

Chicago/Turabian Style

Ioannis Charalampopoulos; Iliana Polychroni; Emmanouil Psomiadis; Panagiotis Nastos. 2021. "Spatiotemporal Estimation of the Olive and Vine Cultivations’ Growing Degree Days in the Balkans Region." Atmosphere 12, no. 2: 148.

Review
Published: 31 December 2020 in Climate
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Throughout history, food adequacy has been one of the most critical parameters for the survival of human societies. The prevailing atmospheric conditions have always been recognised as the primary and most uncontrolled factors that determine crop production, both quantitatively and qualitatively. However, this is only a part of the effects chain. In order to assess the magnitude of the potential cultural impacts of weather changes in a region, it is crucial to comprehend the underlying mechanism of successive consequences that relate the proximate causes, which in our case are the adverse Agro-Meteorological Conditions (AMC), to their effects on society. The present study focuses on the analysis of the impacts’ mechanism on human societies. Moreover, several characteristic agro-meteorological events that have led to significant changes in European civilisation are presented as case studies. The results highlight the linkage between weather and its impact on history evolution based on Agro-Meteorological Famine (AMF). The proposed concept and its analysis by the schematic presentation are in corroboration with the documented historical events of European history. Moreover, the presented connections between weather, agricultural production, and society revealed the significant contribution of the short-term adverse weather conditions on the mechanism of the human civilisation evolution.

ACS Style

Ioannis Charalampopoulos; Fotoula Droulia. The Agro-Meteorological Caused Famines as an Evolutionary Factor in the Formation of Civilisation and History: Representative Cases in Europe. Climate 2020, 9, 5 .

AMA Style

Ioannis Charalampopoulos, Fotoula Droulia. The Agro-Meteorological Caused Famines as an Evolutionary Factor in the Formation of Civilisation and History: Representative Cases in Europe. Climate. 2020; 9 (1):5.

Chicago/Turabian Style

Ioannis Charalampopoulos; Fotoula Droulia. 2020. "The Agro-Meteorological Caused Famines as an Evolutionary Factor in the Formation of Civilisation and History: Representative Cases in Europe." Climate 9, no. 1: 5.

Journal article
Published: 15 September 2020 in ISPRS International Journal of Geo-Information
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Landslides can cause severe problems to the social and economic well-being. In order to effectively mitigate landslide hazards, the development of detailed susceptibility maps is required, towards implementing targeted risk management plans. This study aims to create detailed landslide susceptibility (LS) and landslide risk (LR) maps of the Sperchios River basin by applying an expert semi-quantitative approach that integrates the Geographic Information Systems (GIS)-based multicriteria analysis and Earth Observation (EO) data. Adopting the analytic hierarchy process (AHP) for a weighted linear combination (WLC) approach, eleven evaluation parameters were selected. The results were validated using a historic landslide database, enriched with new landslide locations mapped by satellite and aerial imagery interpretation and field surveys. Moreover, the landslide risk map of the area was also developed, based on the LS delineation, considering additionally the anthropogenic exposure and overall vulnerability of the area. The results showed that the most susceptible areas are located at the west and south-west regions of the basin. The synergistic use of GIS-based analysis and EO data can provide a useful tool for the design of natural hazards prevention policy at highly susceptible to risk landslide risk areas.

ACS Style

Emmanouil Psomiadis; Nikos Charizopoulos; Nikolaos Efthimiou; Konstantinos X. Soulis; Ioannis Charalampopoulos. Earth Observation and GIS-Based Analysis for Landslide Susceptibility and Risk Assessment. ISPRS International Journal of Geo-Information 2020, 9, 552 .

AMA Style

Emmanouil Psomiadis, Nikos Charizopoulos, Nikolaos Efthimiou, Konstantinos X. Soulis, Ioannis Charalampopoulos. Earth Observation and GIS-Based Analysis for Landslide Susceptibility and Risk Assessment. ISPRS International Journal of Geo-Information. 2020; 9 (9):552.

Chicago/Turabian Style

Emmanouil Psomiadis; Nikos Charizopoulos; Nikolaos Efthimiou; Konstantinos X. Soulis; Ioannis Charalampopoulos. 2020. "Earth Observation and GIS-Based Analysis for Landslide Susceptibility and Risk Assessment." ISPRS International Journal of Geo-Information 9, no. 9: 552.

Review
Published: 28 June 2020 in Atmosphere
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R is an open-source programming language which gained a central place in the geosciences over the last two decades as the primary tool for research. Now, biometeorological research is driven by the diverse datasets related to the atmosphere and other biological agents (e.g., plants, animals and human beings) and the wide variety of software to handle and analyse them. The demand of the scientific community for the automation of analysis processes, data cleaning, results sharing, reproducibility and the capacity to handle big data brings a scripting language such as R in the foreground of the academic universe. This paper presents the advantages and the benefits of the R language for biometeorological and other atmospheric sciences’ research, providing an overview of its typical workflow. Moreover, we briefly present a group of useful and popular packages for biometeorological research and a road map for further scientific collaboration on the R basis. This paper could be a short introductory guide to the world of the R language for biometeorologists.

ACS Style

Ioannis Charalampopoulos. The R Language as a Tool for Biometeorological Research. Atmosphere 2020, 11, 682 .

AMA Style

Ioannis Charalampopoulos. The R Language as a Tool for Biometeorological Research. Atmosphere. 2020; 11 (7):682.

Chicago/Turabian Style

Ioannis Charalampopoulos. 2020. "The R Language as a Tool for Biometeorological Research." Atmosphere 11, no. 7: 682.

Journal article
Published: 28 April 2020 in Land
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The western part of Crete Island has undergone serious landslide events in the past. The intense rainfalls that took place in the September 2018 to February 2019 period provoked extensive landslide events at the northern part of Chania prefecture, along the motorway A90. Geospatial analysis methods and earth observation data were utilized to investigate the impact of the various physical and anthropogenic factors on landslides and to evaluate landslide susceptibility. The landslide inventory map was created based on literature, aerial photo analysis, satellite images, and field surveys. A very high-resolution Digital Elevation Model (DEM) and land cover map was produced from a dense point cloud and Earth Observation data (Landsat 8), accordingly. Sentinel-2 data were used for the detection of the recent landslide events and offered suitable information for two of them. Eight triggering factors were selected and manipulated in a GIS-based environment. A semi-quantitative method of Analytical Hierarchy Process (AHP) and Weighted Linear Combination (WLC) was applied to evaluate the landslide susceptibility index (LSI) both for Chania prefecture and the motorway A90 in Chania. The validation of the two LSI maps provided accurate results and, in addition, several susceptible points with high landslide hazards along the motorway A90 were detected.

ACS Style

Emmanouil Psomiadis; Andreas Papazachariou; Konstantinos X. Soulis; Despoina-Simoni Alexiou; Ioannis Charalampopoulos. Landslide Mapping and Susceptibility Assessment Using Geospatial Analysis and Earth Observation Data. Land 2020, 9, 133 .

AMA Style

Emmanouil Psomiadis, Andreas Papazachariou, Konstantinos X. Soulis, Despoina-Simoni Alexiou, Ioannis Charalampopoulos. Landslide Mapping and Susceptibility Assessment Using Geospatial Analysis and Earth Observation Data. Land. 2020; 9 (5):133.

Chicago/Turabian Style

Emmanouil Psomiadis; Andreas Papazachariou; Konstantinos X. Soulis; Despoina-Simoni Alexiou; Ioannis Charalampopoulos. 2020. "Landslide Mapping and Susceptibility Assessment Using Geospatial Analysis and Earth Observation Data." Land 9, no. 5: 133.

Journal article
Published: 25 September 2019 in Atmosphere
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This paper aims to analyse and conclude about the behaviour of the most commonly used human thermal comfort indices under a variety of atmospheric conditions in order to provide further information about their appropriateness. Utilising Generalized Additive Models (GAMs), this article examines the indices’ sensitivity when exposed to diverse classified atmospheric conditions. Concentrated upon analysing commonly used human thermal indices, two Statistical/Algebraic indices (Thermohygrometric Index (THI) and HUMIDEX (HUM)), and four Energy Balance Model indices (Physiologically Equivalent Temperature (PET), modified PET (mPET), Universal Thermal Climate Index (UTCI), and Perceived Temperature (PT)) were selected. The results of the study are twofold, the identification of (1) index sensitivity to parameters’ variation, and change rates, resultant of different atmospheric conditions; and, (2) the overall pertinence of each of the indices for local thermal comfort evaluation. The results indicate that the thermohygrometric indices cannot follow and present the thermal conditions’ variations. On the other hand, UTCI is very sensitive under low radiation condition, and PET/mPET present higher sensitivity when the weather is dominated by high radiation and air temperature. PT index provides the lower sensitive among the human energy balance indices, but this is adequately sensitive to describe the thermal comfort environment.

ACS Style

Ioannis Charalampopoulos; Andre Santos Nouri. Investigating the Behaviour of Human Thermal Indices under Divergent Atmospheric Conditions: A Sensitivity Analysis Approach. Atmosphere 2019, 10, 580 .

AMA Style

Ioannis Charalampopoulos, Andre Santos Nouri. Investigating the Behaviour of Human Thermal Indices under Divergent Atmospheric Conditions: A Sensitivity Analysis Approach. Atmosphere. 2019; 10 (10):580.

Chicago/Turabian Style

Ioannis Charalampopoulos; Andre Santos Nouri. 2019. "Investigating the Behaviour of Human Thermal Indices under Divergent Atmospheric Conditions: A Sensitivity Analysis Approach." Atmosphere 10, no. 10: 580.

Correction
Published: 19 June 2019 in Theoretical and Applied Climatology
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ACS Style

Ioannis Charalampopoulos. Correction to: A comparative sensitivity analysis of human thermal comfort indices with generalized additive models. Theoretical and Applied Climatology 2019, 137, 1623 -1623.

AMA Style

Ioannis Charalampopoulos. Correction to: A comparative sensitivity analysis of human thermal comfort indices with generalized additive models. Theoretical and Applied Climatology. 2019; 137 (1-2):1623-1623.

Chicago/Turabian Style

Ioannis Charalampopoulos. 2019. "Correction to: A comparative sensitivity analysis of human thermal comfort indices with generalized additive models." Theoretical and Applied Climatology 137, no. 1-2: 1623-1623.

Original paper
Published: 21 May 2019 in Theoretical and Applied Climatology
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This paper presents a comparative sensitivity analysis of six of the widely used human thermal comfort indices. The analysis consists of the evaluation of the effect of indices ‘input parameters’ variation and change rate on the output of human energy balance and simple thermohygrometric indices. For the implementation of the sensitivity analysis, the generalized additive model’s methodology is applied on a long period and high temporal resolution dataset from Athens, Greece. The results indicate that the proposed methodology of generalized additive models is adequate for such an analysis. Moreover, this research revealed the differences in index behaviour. The thermohygrometric indices (i.e. Thermohygrometric Index and HUMIDEX) exhibit a clearly deferent sensitivity pattern in comparison to the human energy balance indices (i.e. physiologically equivalent temperature (PET), perceived temperature (PT), modified physiologically equivalent temperature (mPET) and Universal Thermal Comfort Index (UTCI)), and they are incapable to handle the complexity of the atmospheric stimuli on human thermal perception. On the other hand, human energy balance indices can follow the input parameters fluctuations but with different grades of sensitivity. PET and mPET present a moderate and gradual sensitivity both in terms of the input variation and input change rate. PT is the less sensitive index among the human energy balance investigated, but it is able to follow efficiently the input parameters variation during the measurements period. Moreover, UTCI is the most sensitive among all the selected indices for low values (and low change rate) of the input parameters but for high input parameter values (except the wind speed), UTCI exhibits a low sensitivity in comparison to the other human energy balance indices. In terms of sensitivity, the most influential input parameter is global radiation, and the less influential is vapour pressure.

ACS Style

Ioannis Charalampopoulos. A comparative sensitivity analysis of human thermal comfort indices with generalized additive models. Theoretical and Applied Climatology 2019, 137, 1605 -1622.

AMA Style

Ioannis Charalampopoulos. A comparative sensitivity analysis of human thermal comfort indices with generalized additive models. Theoretical and Applied Climatology. 2019; 137 (1-2):1605-1622.

Chicago/Turabian Style

Ioannis Charalampopoulos. 2019. "A comparative sensitivity analysis of human thermal comfort indices with generalized additive models." Theoretical and Applied Climatology 137, no. 1-2: 1605-1622.

Journal article
Published: 25 October 2018 in International Journal of Environmental Research and Public Health
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Centered on hot dry Mediterranean summer climates, this study assesses the climatic data that was extracted from Lisbon’s meteorological station between the years of 2012 and 2016. Focused on the summer period, existing outdoor human thermal comfort levels that are already prone to extreme heat stress thresholds were evaluated. Such an assessment was rooted around identifying the relationship and discrepancies between singular climatic variables (e.g., air Temperature (Ta)); and adapted thermos-physiological indices (e.g., the modified physiologically equivalent temperature (mPET)), which also consider the influence of radiation fluxes over the human body. In addition, default urban canyon case studies (UCCs) were utilized to supplement how both differ and influence one another, especially under extreme weather conditions including heat waves events (HWE), and very hot days (VHD). Through the use of wholesome thermo-physiological indices, the study revealed that while human health and thermal comfort is already prone to extreme physiological stress (PS) grades during one of the hottest months of the year, the current extremes could be drastically surpassed by the end of the century. Within the examined UCCs, it was identified that the projected PET could reach values of 58.3 °C under a projected climate change RCP8.5/SRES A1FI scenario. Similarly, and in terms of thermo-physiological stress loads, the following could happen: (i) a future “cooler summer day” could present similar conditions to those currently found during a ‘typical summer day; (ii) a future ‘typical summer day’ could present hourly physiological equivalent temperature load (PETL) that recurrently surpassed those currently found during a “very hot day”; and, (iii) a future “very hot day” could reveal severe hourly PETL values that reached 35.1 units beyond the established “no thermal stress” class.

ACS Style

Andre Santos Nouri; Ioannis Charalampopoulos; Andreas Matzarakis. Beyond Singular Climatic Variables—Identifying the Dynamics of Wholesome Thermo-Physiological Factors for Existing/Future Human Thermal Comfort during Hot Dry Mediterranean Summers. International Journal of Environmental Research and Public Health 2018, 15, 2362 .

AMA Style

Andre Santos Nouri, Ioannis Charalampopoulos, Andreas Matzarakis. Beyond Singular Climatic Variables—Identifying the Dynamics of Wholesome Thermo-Physiological Factors for Existing/Future Human Thermal Comfort during Hot Dry Mediterranean Summers. International Journal of Environmental Research and Public Health. 2018; 15 (11):2362.

Chicago/Turabian Style

Andre Santos Nouri; Ioannis Charalampopoulos; Andreas Matzarakis. 2018. "Beyond Singular Climatic Variables—Identifying the Dynamics of Wholesome Thermo-Physiological Factors for Existing/Future Human Thermal Comfort during Hot Dry Mediterranean Summers." International Journal of Environmental Research and Public Health 15, no. 11: 2362.

Articles
Published: 06 July 2017 in International Journal of Remote Sensing
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The thermal comfort conditions in a complex urban area is influenced by the surrounding structures and obstacles which modify the incoming radiation fluxes. A measure of this modification is the sky view factor (SVF), which could be estimated in each point of a selected area if a high resolution digital elevation model (DEM), or other urban morphological data including the manmade infrastructure, are available. The goal of this study is to model the continuous SVF for a complex building environment in the campus of National and Kapodistrian University of Athens, based on a high resolution DEM (0.09 m). For this purpose, we applied the structure-from-motion (SfM) technique, which takes advantage of the interpretation of ultra-high resolution colour images acquired by remotely piloted airborne systems, also known as drones or unmanned aerial vehicles. A quantitative analysis, by applying statistical metrics, yields perfect agreement between modelled and observed SVF values, over the examined area. The proposed methodology could be applied for human-biometeorology research in micro scale complex urban environments.

ACS Style

Panagiotis Nastos; Emmanuel Vassilakis; Marina-Panagiota P. Nastos; Ioannis Charalampopoulos; Andreas Matzarakis. Assessment of continuous sky view factor based on ultra-high resolution natural colour images acquired by remotely piloted airborne systems for applications in an urban area of Athens. International Journal of Remote Sensing 2017, 38, 5814 -5829.

AMA Style

Panagiotis Nastos, Emmanuel Vassilakis, Marina-Panagiota P. Nastos, Ioannis Charalampopoulos, Andreas Matzarakis. Assessment of continuous sky view factor based on ultra-high resolution natural colour images acquired by remotely piloted airborne systems for applications in an urban area of Athens. International Journal of Remote Sensing. 2017; 38 (20):5814-5829.

Chicago/Turabian Style

Panagiotis Nastos; Emmanuel Vassilakis; Marina-Panagiota P. Nastos; Ioannis Charalampopoulos; Andreas Matzarakis. 2017. "Assessment of continuous sky view factor based on ultra-high resolution natural colour images acquired by remotely piloted airborne systems for applications in an urban area of Athens." International Journal of Remote Sensing 38, no. 20: 5814-5829.

Journal article
Published: 10 February 2017 in Urban Science
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Global economy, trade and other human activities are affected by the behaviour and the psychology of the individuals [1–3]. Knowing the influential factors, which contribute to the perception, behaviour and psychology, a positive reinforcement to the economic cycle could be possible [2,4,5]. Human behaviour is affected by a wide set of factors, some of them being the social and environmental conditions. The expression of behaviour is frequently reflected as wishes, desires and preferences which drive to everyday choices and actions. Scientists have already described the influence of the environmental conditions, especially weather, on the psychology and behaviour via conscious and subconscious functions [6–9]. The essential datasets for the analysis of weather influence on human life are the meteorological data, along with archives of medical registries, psychiatric hospital databases, and police stations’ records [9–17] or structured questionnaires completed by individuals in open public spaces [18–20]. The major drawback of those datasets is that are fragmented and more or less biased by several known and unknown factors [9,21,22] such as the unknown physical, mental and psychological conditions of interviewees along with their acclimatization level when we referred to structured questionnaires [7,23]. An essential part of individuals’ lifestyle (as a part of their behaviour) is the choice of summer vacation destinations. It is known that tourism, especially summer tourism, can be described by the Triple S (Sun, Sea and Sand), which is an abundant feature of the Mediterranean region [24,25]. Many of the major tourism factors for the triple S depend on weather and local climate. Tourist decision making with respect to the destination choice could be supported by specific indices such as, among others, the Tourism Climate Index (TCI) developed by Mieczkowski [26], the Climate Index for Tourism [27] and the ClimateTourism/Transfer-Information-Scheme [25,28,29]. Further, the application of new tools and applications such as Decision Support Systems (DSS) takes into account distinct criteria in a decision making process about preliminary ratting destinations [30]. DSS are usually refers to demand-oriented systems such as destination management or consumer-oriented travel-counselling systems [31]. A DSS is usually built to support the solution of a certain problem or to evaluate an opportunity, through the design of computer models and the simulation of real-life experiences [32]. DSSs continue to improve the quality of decisions by standardizing the process and logic information managers’ choices and making the criteria for determining appropriate outcomes systematic [33]. To investigate the relation between the outdoor thermal conditions and the individuals’ desires related to the summer holidays, we examined the searching frequency of specific keywords as retrieved by the Google Trends service and the values of human thermal index Physiological Equivalent Temperature (PET) during the simultaneous time period. The summer holidays terms, thereafter keywords, were a set of famous summer holiday destinations over Mediterranean Sea and northern coastal European regions, accompanied by some very common words linked with the summer. The results indicate a clearly positive relation between the searched keywords and the PET values.

ACS Style

Ioannis Charalampopoulos; Panagiotis T. Nastos; Eleni Didaskalou. Human Thermal Conditions and North Europeans’ Web Searching Behavior (Google Trends) on Mediterranean Touristic Destinations. Urban Science 2017, 1, 8 .

AMA Style

Ioannis Charalampopoulos, Panagiotis T. Nastos, Eleni Didaskalou. Human Thermal Conditions and North Europeans’ Web Searching Behavior (Google Trends) on Mediterranean Touristic Destinations. Urban Science. 2017; 1 (1):8.

Chicago/Turabian Style

Ioannis Charalampopoulos; Panagiotis T. Nastos; Eleni Didaskalou. 2017. "Human Thermal Conditions and North Europeans’ Web Searching Behavior (Google Trends) on Mediterranean Touristic Destinations." Urban Science 1, no. 1: 8.

Book chapter
Published: 10 September 2016 in Springer Atmospheric Sciences
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The objective of the study is to assess the human thermal comfort at a University Campus in the metropolitan area of Athens. The equipment setup consists of all the necessary sensors for human thermal comfort estimation along with a high resolution GPS, mounted on a cargo bicycle. The experiment was carried out for midday and night on July 29, 2015. Besides, long term 5 min measurements from a meteorological station, established on the roof of a building within the University Campus, were also used to quantify the mean thermal environment. The densely carried out bicycle measurements every 5 s was the input data utilized by the ENVI-met model; a three-dimensional microclimate model designed to simulate the surface-plant-air interactions in urban environment. The in situ measurements along with the model’s output results reveal the thermal comfort regime of the selected area and the ability of the model to estimate accurately the micrometeorological conditions.

ACS Style

P. T. Nastos; K. P. Moustris; Ioannis Charalampopoulos; I. K. Larissi; Athanasios G. Paliatsos. Assessment of the Thermal Comfort Conditions in a University Campus Using a 3D Microscale Climate Model, Utilizing Mobile Measurements. Springer Atmospheric Sciences 2016, 309 -315.

AMA Style

P. T. Nastos, K. P. Moustris, Ioannis Charalampopoulos, I. K. Larissi, Athanasios G. Paliatsos. Assessment of the Thermal Comfort Conditions in a University Campus Using a 3D Microscale Climate Model, Utilizing Mobile Measurements. Springer Atmospheric Sciences. 2016; ():309-315.

Chicago/Turabian Style

P. T. Nastos; K. P. Moustris; Ioannis Charalampopoulos; I. K. Larissi; Athanasios G. Paliatsos. 2016. "Assessment of the Thermal Comfort Conditions in a University Campus Using a 3D Microscale Climate Model, Utilizing Mobile Measurements." Springer Atmospheric Sciences , no. : 309-315.

Book chapter
Published: 10 September 2016 in Springer Atmospheric Sciences
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Rainfall is very influential on the alteration of atmospheric conditions. The existence of precipitated water in the atmosphere leads to a reduction of both air and surface temperature values and also to a simultaneous increase of relative humidity. The feeling of increased human discomfort conditions is, however, very common after a storm during the warm period. The present study deals with a preliminary assessment on the effect of rainfall events on human thermal comfort under hot weather conditions. For the purpose of this study, meteorological data along with the thermal comfort indices THI and PET were used. More than 6 meteorological parameters were analyzed before and after a number of selected rainfall events. Results revealed that a rapid alteration of the PET index values after rainfall events is occurred as a consequence of global radiation, air temperature and relative humidity variations.

ACS Style

I. Charalampopoulos; I. Tsiros. A Preliminary Study on the Effect of Rainfall Events on Human Thermal Comfort Under Hot Weather Conditions. Springer Atmospheric Sciences 2016, 329 -334.

AMA Style

I. Charalampopoulos, I. Tsiros. A Preliminary Study on the Effect of Rainfall Events on Human Thermal Comfort Under Hot Weather Conditions. Springer Atmospheric Sciences. 2016; ():329-334.

Chicago/Turabian Style

I. Charalampopoulos; I. Tsiros. 2016. "A Preliminary Study on the Effect of Rainfall Events on Human Thermal Comfort Under Hot Weather Conditions." Springer Atmospheric Sciences , no. : 329-334.

Journal article
Published: 03 February 2016 in Theoretical and Applied Climatology
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The purpose of this paper is to present a simple methodology to improve the evaluation of the human-biometeorological benefits of open spaces. It is based on two groups of new indices using as basis the well-known PET index. This simple methodology along with the accompanying indices allows a qualitative and quantitative evaluation of the climatic behavior of the selected sites. The proposed methodology was applied in a human-biometeorology research in the city of Athens, Greece. The results of this study are in line with the results of other related studies indicating the considerable influence of the sky view factor (SVF), the existence of the vegetation and the building material on human-biometeorological conditions. The proposed methodology may provide new insights in the decision-making process related to urban open spaces’ best configuration.

ACS Style

Ioannis Charalampopoulos; Ioannis Tsiros; Aik. Chronopoulou-Sereli; Andreas Matzarakis. A methodology for the evaluation of the human-bioclimatic performance of open spaces. Theoretical and Applied Climatology 2016, 128, 811 -820.

AMA Style

Ioannis Charalampopoulos, Ioannis Tsiros, Aik. Chronopoulou-Sereli, Andreas Matzarakis. A methodology for the evaluation of the human-bioclimatic performance of open spaces. Theoretical and Applied Climatology. 2016; 128 (3-4):811-820.

Chicago/Turabian Style

Ioannis Charalampopoulos; Ioannis Tsiros; Aik. Chronopoulou-Sereli; Andreas Matzarakis. 2016. "A methodology for the evaluation of the human-bioclimatic performance of open spaces." Theoretical and Applied Climatology 128, no. 3-4: 811-820.

Journal article
Published: 12 November 2014 in International Journal of Biometeorology
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Studies on human thermal comfort in urban areas typically quantify and assess the influence of the atmospheric parameters studying the values and their patterns of the selected index or parameter. In this paper, the interpretation tools are the first derivative of the selected parameters (∆Parameter/∆t) and the violin plots. Using these tools, the effect of sites’ configuration on thermal conditions was investigated. Both derivatives and violin plots indicated the ability of vegetation to act as a buffer to the rapid changes of air temperature, mean radiant temperature, and the physiologically equivalent temperature (PET). The study is focused on the “thermal extreme” seasons of winter (December, January, and February) and summer (June, July, and August) during a 3-year period of measurements in five selected sites under calm wind and sunny conditions. According to the results, the absence of vegetation leads to high derivative values whereas the existence of dense vegetation tends to keep the parameters’ values relatively low, especially under hot weather conditions.

ACS Style

Ioannis Charalampopoulos; Ioannis Tsiros; Aikaterini Chronopoulou-Sereli; Andreas Matzarakis. A note on the evolution of the daily pattern of thermal comfort-related micrometeorological parameters in small urban sites in Athens. International Journal of Biometeorology 2014, 59, 1223 -1236.

AMA Style

Ioannis Charalampopoulos, Ioannis Tsiros, Aikaterini Chronopoulou-Sereli, Andreas Matzarakis. A note on the evolution of the daily pattern of thermal comfort-related micrometeorological parameters in small urban sites in Athens. International Journal of Biometeorology. 2014; 59 (9):1223-1236.

Chicago/Turabian Style

Ioannis Charalampopoulos; Ioannis Tsiros; Aikaterini Chronopoulou-Sereli; Andreas Matzarakis. 2014. "A note on the evolution of the daily pattern of thermal comfort-related micrometeorological parameters in small urban sites in Athens." International Journal of Biometeorology 59, no. 9: 1223-1236.

Journal article
Published: 13 September 2012 in Urban Ecosystems
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The present study deals with human thermal comfort, as it is quantified by two well-known human biometeorological indices, Physiologically Equivalent Temperature (PET) and Humidex, in selected urban areas with different tree and building structures. The study took place during July 2003, at Agricultural University of Athens, Greece. Meteorological and environmental measurements were carried out at six sites. The selected sites differ in regard to sky view factor (SVF) values, environmental configuration and green (vegetation) coverage. The results of this study indicate a striking influence of site configuration on human thermal comfort. For example, in an outdoor lawn area surrounded by trees (green atrium) the PET was greater than 41 °C (human perception of “very hot”) for 13 % of the measurement time, while in an open building atrium (courtyard) PET was greater than 41 °C for 28 % of the time. In addition, ‘comfortable’ conditions as PET quantifies formed during 26 % of the measurement time in green atrium but less than 15 % of the time in the building atrium. Especially during daytime the difference between these two sites reached 8.7 °C according to the PET and 4.3 °C according to the Humidex. At sites with low SVF values and dense green coverage the human biometeorological conditions were improved compared to sites with high SVF values and those with buildings nearby. Significant relationships between SVF and biometeorological indices classes were indicated. The PET index better represented human comfort than Humidex.

ACS Style

Ioannis Charalampopoulos; Ioannis Tsiros; Aikaterini Chronopoulou-Sereli; Andreas Matzarakis. Analysis of thermal bioclimate in various urban configurations in Athens, Greece. Urban Ecosystems 2012, 16, 217 -233.

AMA Style

Ioannis Charalampopoulos, Ioannis Tsiros, Aikaterini Chronopoulou-Sereli, Andreas Matzarakis. Analysis of thermal bioclimate in various urban configurations in Athens, Greece. Urban Ecosystems. 2012; 16 (2):217-233.

Chicago/Turabian Style

Ioannis Charalampopoulos; Ioannis Tsiros; Aikaterini Chronopoulou-Sereli; Andreas Matzarakis. 2012. "Analysis of thermal bioclimate in various urban configurations in Athens, Greece." Urban Ecosystems 16, no. 2: 217-233.

Conference paper
Published: 31 August 2021
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ACS Style

A. Matsoukis; A. Kamoutsis; Ioannis Charalampopoulos; I. Panagiotou. Evaluation of biometeorological conditions of mountain communities and urban center in Greece. 2021, 1 .

AMA Style

A. Matsoukis, A. Kamoutsis, Ioannis Charalampopoulos, I. Panagiotou. Evaluation of biometeorological conditions of mountain communities and urban center in Greece. . 2021; ():1.

Chicago/Turabian Style

A. Matsoukis; A. Kamoutsis; Ioannis Charalampopoulos; I. Panagiotou. 2021. "Evaluation of biometeorological conditions of mountain communities and urban center in Greece." , no. : 1.

Pre registration
Published: 31 August 2021
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ACS Style

Ioannis Charalampopoulos. R-guide. 2021, 1 .

AMA Style

Ioannis Charalampopoulos. R-guide. . 2021; ():1.

Chicago/Turabian Style

Ioannis Charalampopoulos. 2021. "R-guide." , no. : 1.