Ioannis Charalampopoulos

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• PhD in Bioclimatology
• Lab. Teaching Staff at Agricultural University of Athens

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 datase...

Thermal conditions are the most challenging factors in studying human biometeorology, indoor and outdoor design, and adaptation to climate change. The thermal environment is always present and shapes everyday life, behaviours, and the natural and artificial environment. In this paper, we analyse some thoughts that link thermal perception to the roo...

In this study, the present bioclimatic conditions and the estimated changes of the bioclimate over natural and agricultural areas of the Adriatic territory (Albania, Bosnia and Herzegovina, Croatia, Italy, Montenegro, and Slovenia) are analysed and presented. For this purpose, a survey on De Martonne’s bioclimate categories’ spatial distribution ov...

Unquestionably, the rapidly changing climate and, therefore, alterations in the associated bioclimate, constitute an alarming reality with implications for daily practice and natural capital management. This research displays the present and projected bioclimate evolution over Greece’s phytogeographical regions. For this purpose, ultrahigh-resoluti...

This study deals with the information gap on desertification risk for wetland habitat types in Natura 2000 network sites of Greece. Using the Environmentally Sensitive Areas (ESA) index as a proxy, all Natura 2000 wetland habitat types have been assessed and assigned to desertification risk categories. The assessment was conducted at the national,...

This article explores the impacts of climate change on the rural and natural landscapes in the region of Eastern Macedonia and Thrace, northeastern Greece. The spatial distributions of the bioclimatic de Martonne Index and the phytoclimatic Emberger Index were calculated at a very high resolution (~500 m) for present conditions (1970–2000), two fut...

AgERA5 (ECMWF) is a relatively new climate dataset specifically designed for agricultural applications. MERRA-2 (NASA) is also used in agricultural applications; however, it was not specifically designed for this purpose. Despite the proven value of these datasets in assessing global climate patterns, their effectiveness in small-scale agricultural...

This article explores the impacts of climate change on the rural and natural landscapes at the Region of Eastern Macedonia and Thrace, Northeastern Greece. The spatial distributions of the bioclimatic de Martonne and phytoclimatic Emberger indices were calculated, at very high resolution (~500m), for the present conditions (1970–2000), two future t...

Unquestionably the rapidly changing climate and, therefore, alterations in the associated bioclimate, constitute an alarming reality with implications in daily practice and natural capital management. In this research the present and projected bioclimate evolution over the phytogeographical regions of Greece is displayed. For this purpose, ultrahig...

The agricultural sector faces significant challenges worldwide due to climate change. The pressure exerted by altered thermal conditions drives the zonal shift for various cultivations. This study aims to analyze and present the spatiotemporal evolution of the growing degree days (GDD) index in the northern Mediterranean Basin (NMB). More specifica...

Climate change is challenging the agricultural sector worldwide. The pressure exerted by the altered thermal conditions drives the zonal shift for various cultivations. This study presents the multiyear analysis of the Growing Degree Days (GDD) index over the Northern Mediterranean Basin (NMB), focused on the high-value vine cultivation derived fro...

Climate change is already having a negative impact on many areas of human activity, affecting life globally. It is more urgent than ever to increase our adaptive capacity to respond to current and future climate change risks. Climate services refer to a specialized sector that encompasses both research and operational activities. This sector is pri...

Juniperus drupacea is a highly morphologically and genetically differentiated Tertiary relict, displaying a disjunct geographical range in the eastern Mediterranean. Being a thermophilous, light-demanding, and moderately drought-resistant tree, it survived the past climatic oscillations via altitudinal migration. The species has its westernmost ran...

Within an EU Life project aiming to boost climate change adaptation in Greece, this study develops a transect method for rapid landscape-scale assessment. The procedure applies a holistic assessment of terrestrial landscapes at three spatial scales: a broad cross-section transect zone through the Peloponnese peninsula (240 km long, 1.416.6 km2) and...

This Special Issue assesses climate changes impact on soils and land management, the crop production contributions to these changes, as well as land-based adaptation and mitigation response options to combat the projected climate changes. More specifically, the topics include, but are not limited to, the following: - Studies that integrate climati...

Bioclimate alteration unquestionably poses a current but also a potential future threat to natural and agricultural ecosystems and their services. In this scope, the present and future bioclimatic footprint of the Central European territory is investigated and presented. For the first time, an ultrahigh spatial resolution (

Based upon a ‘human-centred approach’, combinations of existing and new methodologies were applied to determine how Ankara’s morphological characteristics influenced the magnitude/frequency of Cold Stress (CS) and Heat Stress (HS) to detect/quantify seasonal and yearly human thermal stress frequency. To quantify these conditions upon the human biom...

The changing climate is closely related to changes in the bioclimate. This research deals with the present bioclimate and its projected evolution over the entirety of the natural and agricultural lands of south-eastern Europe and individual countries (Bulgaria, Greece, Kosovo, N. Macedonia, Romania, and Serbia). For this purpose, an ultrahigh spati...

Frost incidents comprise significant extreme weather events owing to climate change, possibly endangering the agricultural sector of the already impacted south-eastern European area. Thus, the comprehensive evaluation of the frost conditions under the climate regime for eleven countries was conducted by calculating relevant frost agroclimatic indic...

This study discusses the preliminary assessment of Indoor Cooling Degree Necessity (ICDN) based upon the standard air temperature (Ta) value of 22 °C which is defined to be the standard upper mean temperature limit (Tl) for interior comfort as defined by the WHO. By considering indoor air temperature (TaI), levelled oscillations above Tl are utilis...

The present study is aimed at analyzing the evolution of major climatic frost indices over the southeastern part of Europe. For this purpose, the Agri4Cast dataset of the JRC MARS Meteorological Database, derived from reanalysis and observations data, was utilized. This is a gridded dataset with high spatial (25 km) and temporal (daily) resolution....

Climate change may be a challenge for the agricultural sector worldwide. The pressure by the altered thermal conditions drives the zonal shift for a wide variety of cultivations. This study presents the multiyear analysis of the Growing Degree Days (GDD) index over the Mediterranean Basin, focused on the high-value vine cultivation derived from the...

Mediterranean region is an area with unique geophysical, historical and cultural history. According to IPCC 2014, the surface temperature is projected to rise over the 21st century and the mean precipitation is likely to decrease in mid-latitude dry regions. Consequently, we confronted the challenge to study the drought over the Mediterranean regio...

The European climate is changing displaying profound on agriculture, thus strongly reaching the scientific community’s attention. In this review, the compilation of selected scientific research on the agroclimatic conditions’ changes and their impact on the productivity parameters (phenology timing, product quality and quantity) of grapevines and o...

This study addresses the limited work related to Heat Stress (HS) vulnerability within indoor/outdoor contexts and its relationship with local Extreme Heat Events (EHEs). Centred upon Ankara, the study focuses on building upon its weaker approach to human thermophysiological vulnerabilities in an era of climate change, and unregulated urban densifi...

Green spaces within urban built environments could be beneficial for human thermal comfort at the micro-scale, especially during summer period at moderate climates, by effectively reducing heat stress. The objective of this study is to evaluate the human thermal sensation in a green-urban area of Athens during a summer day by using a three-dimensio...

Precision agriculture has been at the cutting edge of research during the recent decade, aiming to reduce water consumption and ensure sustainability in agriculture. The proposed methodology was based on the crop water stress index (CWSI) and was applied in Greece within the ongoing research project GreenWaterDrone. The innovative approach combines...

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 sign...

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 accumul...

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. I...

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 Sperchi...

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 hand...

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 invest...

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 classi...

Evaluation of human thermal sensation in a green-urban area of Athens, Greece. Modeling against mobile measurements. Global warming, by means of heat waves, is expected to affect the human activities in the densely populated areas. This is the case of Athens mega city, the capital of Greece, which faces the most pronounced urbanization impact relat...

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,...

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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 w...

The technology of Constructed Wetlands is well known for the multiple benefits it provides in terms of cost-efficiency, high treatment performance and sustainability characteristics. While these benefits are well documented in the international literature, little attention has been given so far to the ecosystem services of wetland technology, espec...

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 morphol...

In this study the microclimatic conditions of a vegetated courtyard located in an urban cluster of the city of Athens were measured and evaluated on a seasonal basis. The analysis is based on seasonal patterns of rates of change in air temperature (∆Ta /∆t) along with the use of pirate plots. Continuous measurements of air temperature were carried...

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...

This paper examines the relationship among the outdoor thermal conditions in northern European countries and their individuals’ web searching frequency on summer holidays and touristic destinations. While previous studies have examined biometeorological conditions’ impacts by comparing statistics from police and hospital archives, this paper focuse...

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 t...

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...

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...

The wind speed is a substantial parameter for the assessment of the urban microclimatic conditions and the human thermal comfort which formed in open space. The estimation of this factor, especially at pedestrian level, is often inaccurate or inexplicit due to the complexity of the environment. The present study deals with a methodology for wind...

MSc Thesis. Environmental Physics-Meteorology, National and Kapodistrian University of Athens

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...

The writing of this book was done to meet some teaching needs of students of geotechnical and, generally, positive sciences, while, at the same time, it is a useful resource for graduates, regarding bioclimatic applications. It was designed to provide basic knowledge for understanding relevant topics that are analyzed in the book, while, the exampl...

The thermal sensation in the Agricultural University of Athens was investigated, using the index of Physiological Equivalent Temperature. The RayΜan model was applied including, besides the meteorological parameters, the geometric configurations of space (plant cover and buildings). Six environmental configuration scenarios were selected based on t...

The methodology deals with human thermal comfort and human thermal stress. The major aim of this methodology is the investigation and quantification of thermal comfort conditions as they configured in open spaces under different meteorological conditions. In order to reach those aims, a new meteorological conditions approach based on Global Radiat...

The purpose of this study was the investigation of the microclimate conditions of various mountainous Nafpaktia (Apodotia Municipality, Prefecture of Aitoloakarnania, Greece) areas aiming to identify individual microclimates in them and evaluating them for various forms of development such as tourism and recreation. From the air temperature and rel...

This study was carried out to determine the biometeorological conditions in the mountainous communities of Nafpaktia (MNC) in West Greece (Municipulity of Apodotia, Prefecture of Aitoloakarnania), a rural and unexploited region in comparison with the nearby urban center, Lamia, the capital of the Periphery of Central Greece. Air temperature and hum...

In this chapter, the creation of a prevention policy for dealing with fires is highlighted. The current state of the existing network of meteorological stations (MS), the climatic and bioclimatic conditions of natural and non-natural areas of the fire-affected prefectures of Arcadia, Achaia, Ilia, Laconia, Messinia, Corinthia and the island of Evia...

The present study explored the biometeorological conditions of mountainous communities of Nafpaktia (Municipality of Apodotia, Prefecture of Aitoloakarnania), a region without commercial, industrial or other activities, combining with noticeable tourist potential, in west continental Greece, in comparison to the biometeorological conditions of Athe...

Urban green areas, as parks and gardens, improve thermal comfort conditions because they modify local meteorological conditions. The human thermal comfort can be expressed using the appropriate bioclimatic indices. Urban planners and architects need more accurate information related to the bioclimatic performance of such green areas. Primarily, the...

In Greece the most important tourism activity occurs in coastal and island areas. Mountain areas have remained unexploited despite of their proximity to urban centers, their satisfactory road network and most of all their natural beauty and their beneficial environmental conditions. This study investigates the bioclimatic performance of Nafpaktia,...

The application of Bioclimatological indices is very useful for the evaluation of outdoor thermal comfort in various configurations of space/landscape. It has been observed that this configuration can improve the human thermal sensation. Six configured sites in Agricultural University of Athens Campus (AUA) that were studied in this publication dif...

This study aims to investigate the influence of the sea and of several land uses on the configuration of the topoclimate of Glyfada municipality. The study area borders on the Golf Saronic Sea and includes several land uses such as residential, commercial and tourist. In order to investigate the topoclimate, the air temperature and the air relative...

This study aims to investigate the possibility to evaluate the microclimate that is developed in an area of Lavreotiki peninsula, contaminated with heavy metals, through flowering phenological observations on native plant species. The flowering phenology of the plant species Silene colorata, Trifolium stellatum, Bellis annua, and Knautia integrifol...

During the construction of a big building or a group of buildings in an urban area, the microclimatic conditions of the area become more unfavourable. To compensate the effect of the construction on the ambient microclimatic conditions, the building surrounding usually covered with green. This study aims to monitor spatial patterns of the basic bio...

The hydrometrical conditions of Glyfada Municipality, Attica, a highly developed coastal suburb in the southeast of Athens, have been studied as they are developed by the local land uses. A detailed mapping of the existing bioclimatic situation was done through registration and evaluation of the air temperature and relative humidity. It was indicat...

This survey aims to investigate the daily pattern of Predicted Mean Vote (PMV) index over four terrain configurations. Those configurations vary on ground coverage (green, construction materials) and on geometrical structure. For this survey measurements of air temperature, relative humidity and wind speed were carried out every ten minutes during...

Investigations concentrated on the influence of the urban green areas on the local climate. Nocturnal mobile measurements were carried out under windless and light wind conditions, over the thermally polluted western part of Athens, Greece. For this purpose three green areas with different size and characteristics were selected. The collected data...

The spatial patterns of air temperature and Heat Index were studied for the region of Elaionas located in the western part of the major, of Athens. Measurements of air temperature, relative humidity and wind conditions were carried out during the years 2000 - 2001. The sampling points were located on a densely design network. Based on the result...

Purpose of this study was the investigation of the micrometeorological conditions in the wider area of the Mechanical Waste Recycling Plant in Ano Liosia, Attica, Greece, and their evaluation-utilization in the design of the new Mechanical Waste Recycling facilities in this area. Air temperature and wind direction and speed measurements were taken...