Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026107
K. Ntourou, K. Fameli, K. Moustris, Antonios Augoustinos, Christos Tsitsis
{"title":"The Influence of Ozone Concentrations on Public Health over the Greater Athens Area, Greece","authors":"K. Ntourou, K. Fameli, K. Moustris, Antonios Augoustinos, Christos Tsitsis","doi":"10.3390/environsciproc2023026107","DOIUrl":"https://doi.org/10.3390/environsciproc2023026107","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122958039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026089
Christos-Panagiotis Giannaklis, Stavros-Andreas Logothetis, V. Salamalikis, Panayiotis Tzoumanikas, Konstantinos Katsidimas, A. Kazantzidis
: We conducted a theoretical analysis of the relationship between red-to-blue (RBR) color intensities and aerosol optical properties. RBR values are obtained by radiative transfer simulations of diffuse sky radiances. Changes in atmospheric aerosol concentration (parametrized by aerosol optical depth, AOD), particle’s size distribution (parametrized by Ångström exponent, AE) and aerosols’ scattering (parametrized by single scattering albedo—SSA) lead to variability in sky radiances and, thus, affect the RBR ratio. RBR is highly sensitive to AOD as high aerosol load in the atmosphere causes high RBR. AE seems to strongly affect the RBR, while SSA effect the RBR, but not to such a great extent.
{"title":"Simulations of Sky Radiances in Red and Blue Channels at Various Aerosol Conditions Using Radiative Transfer Modeling","authors":"Christos-Panagiotis Giannaklis, Stavros-Andreas Logothetis, V. Salamalikis, Panayiotis Tzoumanikas, Konstantinos Katsidimas, A. Kazantzidis","doi":"10.3390/environsciproc2023026089","DOIUrl":"https://doi.org/10.3390/environsciproc2023026089","url":null,"abstract":": We conducted a theoretical analysis of the relationship between red-to-blue (RBR) color intensities and aerosol optical properties. RBR values are obtained by radiative transfer simulations of diffuse sky radiances. Changes in atmospheric aerosol concentration (parametrized by aerosol optical depth, AOD), particle’s size distribution (parametrized by Ångström exponent, AE) and aerosols’ scattering (parametrized by single scattering albedo—SSA) lead to variability in sky radiances and, thus, affect the RBR ratio. RBR is highly sensitive to AOD as high aerosol load in the atmosphere causes high RBR. AE seems to strongly affect the RBR, while SSA effect the RBR, but not to such a great extent.","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114094774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026087
N. Bakas
. Abstract: Macroscale turbulence in the atmosphere is observed to be self-organized into large-scale structures such as zonal jets and robust waves and vortices. A simple model containing the relevant dynamics of turbulence self-organization is quasi-geostrophic turbulence in a stably stratified atmosphere approximated with a single-layer fluid on a beta-plane. Numerical simulations of this model have shown the dominance of Rossby waves, zonal jets and robust vortices in different regions of the parameter space. In this work, we perform numerical integrations of this model and focus on the regime in which robust large-scale vortices dominate the flow. The goal is to identify the Lagrangian coherent vortices that trap the same air masses in their core throughout their life cycle and to obtain their characteristics. The vortices are identified using an objective algorithm based on the Lagrangian-averaged vorticity deviation calculated using the advection of Lagrangian particles by the flow. Long-lived vortices with scales comparable to the deformation scale are found with a symmetry between cyclones and anti-cyclones as expected from the simplified dynamics of the model. The scale as well as the life span of the vortices are also found to increase alongside an increase in the strength of turbulence.
{"title":"Characteristics of Long-Lived Coherent Vortices in a Simple Model of Quasi-Geostrophic Turbulence","authors":"N. Bakas","doi":"10.3390/environsciproc2023026087","DOIUrl":"https://doi.org/10.3390/environsciproc2023026087","url":null,"abstract":". Abstract: Macroscale turbulence in the atmosphere is observed to be self-organized into large-scale structures such as zonal jets and robust waves and vortices. A simple model containing the relevant dynamics of turbulence self-organization is quasi-geostrophic turbulence in a stably stratified atmosphere approximated with a single-layer fluid on a beta-plane. Numerical simulations of this model have shown the dominance of Rossby waves, zonal jets and robust vortices in different regions of the parameter space. In this work, we perform numerical integrations of this model and focus on the regime in which robust large-scale vortices dominate the flow. The goal is to identify the Lagrangian coherent vortices that trap the same air masses in their core throughout their life cycle and to obtain their characteristics. The vortices are identified using an objective algorithm based on the Lagrangian-averaged vorticity deviation calculated using the advection of Lagrangian particles by the flow. Long-lived vortices with scales comparable to the deformation scale are found with a symmetry between cyclones and anti-cyclones as expected from the simplified dynamics of the model. The scale as well as the life span of the vortices are also found to increase alongside an increase in the strength of turbulence.","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125488323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026098
Ilias Jbeily, K. Moustris
{"title":"The Quality of the Atmospheric Environment during Periods of Confinement Due to COVID-19 in the Attica Basin","authors":"Ilias Jbeily, K. Moustris","doi":"10.3390/environsciproc2023026098","DOIUrl":"https://doi.org/10.3390/environsciproc2023026098","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132518292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026095
E. Papakitsos, D. Alexakis, A. Mavrakis
{"title":"Air Mass Trajectories regarding Hydro Meteorological Disasters in Greece Registered in the EM-DAT Database","authors":"E. Papakitsos, D. Alexakis, A. Mavrakis","doi":"10.3390/environsciproc2023026095","DOIUrl":"https://doi.org/10.3390/environsciproc2023026095","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125345741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026111
E. Galanaki, C. Giannaros, Ilias Agathangelidis, C. Cartalis, V. Kotroni, K. Lagouvardos, A. Matzarakis
{"title":"Validating the Copernicus European Regional Reanalysis (CERRA) Dataset for Human-Biometeorological Applications","authors":"E. Galanaki, C. Giannaros, Ilias Agathangelidis, C. Cartalis, V. Kotroni, K. Lagouvardos, A. Matzarakis","doi":"10.3390/environsciproc2023026111","DOIUrl":"https://doi.org/10.3390/environsciproc2023026111","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121817236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026115
E. Batris, D. Nikolopoulos, I. Valais, K. Moustris
{"title":"Radon Assessment: An Overview of Concentration Variability and Synergies with Other Health Risk Factors in Indoor Air","authors":"E. Batris, D. Nikolopoulos, I. Valais, K. Moustris","doi":"10.3390/environsciproc2023026115","DOIUrl":"https://doi.org/10.3390/environsciproc2023026115","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122099819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026099
Panagiotis Vretos
{"title":"Aoos/Vjosa: Protection of the River from the Future Impacts of Climate Change and Anthropogenic Activities","authors":"Panagiotis Vretos","doi":"10.3390/environsciproc2023026099","DOIUrl":"https://doi.org/10.3390/environsciproc2023026099","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"03 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127453938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026103
Ioannis Dravilas, S. Dafis, Georgios Kyros, K. Lagouvardos, Manolis Koubarakis
{"title":"Towards a Machine Learning Snowfall Retrieval Algorithm for GPM-IMERG","authors":"Ioannis Dravilas, S. Dafis, Georgios Kyros, K. Lagouvardos, Manolis Koubarakis","doi":"10.3390/environsciproc2023026103","DOIUrl":"https://doi.org/10.3390/environsciproc2023026103","url":null,"abstract":"","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120931739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.3390/environsciproc2023026088
C. Giannaros, Ilias Agathangelidis, E. Galanaki, C. Cartalis, V. Kotroni, K. Lagouvardos, A. Matzarakis
: Europe has been experiencing an increasing number of sweltering heat waves in recent years. This run of hot extremes induces a significant impact on the human environment, especially in terms of excess mortality, highlighting the urgent need for improved heat–health action planning. This is particularly true in countries situated in the eastern Mediterranean, which is considered a climate change hot spot. To increase preparedness and response to overheating risks, heat–health warning systems (HHWSs) are of vital importance. In this direction, the principal aim of the HEAT-ALARM research project is to provide a novel scientific and technological framework for the development of efficient HHWSs, employing Greece as a testbed. Going beyond the simple notion that outdoor meteorological conditions alone can adequately describe the heat–health nexus, a sophisticated human-biometeorological index, the modified physiologically equivalent temperature (mPET), is used. Advanced statistical models and tools are employed in order to establish a clear link between mPET and excess mortality at regional-unit administrative level. Moreover, urban climate factors produced by combining remote sensing and geographical information system techniques are incorporated into the HHWS via a state-of-the-art numerical weather prediction model. The latter includes a scheme that combines the parameterization and modeling of building effects and energy, respectively, in order to account for the urban indoor thermal conditions and the intra-urban differential heat exposure within the five highest populated cities of Greece (Athens, Thessaloniki, Patras, Heraklion and Larissa). Further, the human body’s acclimatization ability is considered, as well as the physiological characteristics of different vulnerable groups of people, including the elderly, women and outdoor workers. The current paper describes the scientific background of HEAT-ALARM and provides preliminary results associated with the project’s realization.
{"title":"The HEAT-ALARM Project: Development of a Heat–Health Warning System in Greece","authors":"C. Giannaros, Ilias Agathangelidis, E. Galanaki, C. Cartalis, V. Kotroni, K. Lagouvardos, A. Matzarakis","doi":"10.3390/environsciproc2023026088","DOIUrl":"https://doi.org/10.3390/environsciproc2023026088","url":null,"abstract":": Europe has been experiencing an increasing number of sweltering heat waves in recent years. This run of hot extremes induces a significant impact on the human environment, especially in terms of excess mortality, highlighting the urgent need for improved heat–health action planning. This is particularly true in countries situated in the eastern Mediterranean, which is considered a climate change hot spot. To increase preparedness and response to overheating risks, heat–health warning systems (HHWSs) are of vital importance. In this direction, the principal aim of the HEAT-ALARM research project is to provide a novel scientific and technological framework for the development of efficient HHWSs, employing Greece as a testbed. Going beyond the simple notion that outdoor meteorological conditions alone can adequately describe the heat–health nexus, a sophisticated human-biometeorological index, the modified physiologically equivalent temperature (mPET), is used. Advanced statistical models and tools are employed in order to establish a clear link between mPET and excess mortality at regional-unit administrative level. Moreover, urban climate factors produced by combining remote sensing and geographical information system techniques are incorporated into the HHWS via a state-of-the-art numerical weather prediction model. The latter includes a scheme that combines the parameterization and modeling of building effects and energy, respectively, in order to account for the urban indoor thermal conditions and the intra-urban differential heat exposure within the five highest populated cities of Greece (Athens, Thessaloniki, Patras, Heraklion and Larissa). Further, the human body’s acclimatization ability is considered, as well as the physiological characteristics of different vulnerable groups of people, including the elderly, women and outdoor workers. The current paper describes the scientific background of HEAT-ALARM and provides preliminary results associated with the project’s realization.","PeriodicalId":357261,"journal":{"name":"16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125248305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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