A5075453277- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Climate variability and models
- Calibration and Measurement Techniques
- Air Quality Monitoring and Forecasting
- 3D Surveying and Cultural Heritage
- Conservation Techniques and Studies
- Spectroscopy and Laser Applications
- Fire effects on ecosystems
- Remote Sensing and LiDAR Applications
- Remote Sensing in Agriculture
- Climate Change and Health Impacts
- Aeolian processes and effects
- Archaeological Research and Protection
- Graphite, nuclear technology, radiation studies
- Nuclear and radioactivity studies
- Remote-Sensing Image Classification
- Aluminum Alloys Composites Properties
- Cultural Heritage Materials Analysis
- Marine and environmental studies
- Spacecraft Design and Technology
- Vehicle emissions and performance
National Institute of Research and Development for Optoelectronics
2011-2023
Cyprus University of Technology
2023
Clinical Emergency Hospital Bucharest
2021
Carol Davila University of Medicine and Pharmacy
2021
The National Trust
2020
National Institute for Aerospace Research Elie Carafoli
2018
Abstract. In a 3.5-year long study, the long-term performance of mobile, solar absorption Bruker EM27/SUN spectrometer, used for greenhouse gas observations, is checked with respect to co-located reference IFS 125HR which part Total Carbon Column Observing Network (TCCON). We find that stable on timescales several years; drift per year between and official TCCON product 0.02 ppmv XCO2 0.9 ppbv XCH4, within 1σ precision comparison, 0.6 4.3 XCH4. The bias two data sets 3.9 13.0 order avoid...
Abstract. In this study, an extension on the previously reported status of COllaborative Carbon Column Observing Network's (COCCON) calibration procedures incorporating refined methods is presented. COCCON a global network portable Bruker EM27/SUN FTIR spectrometers for deriving column-averaged atmospheric abundances greenhouse gases. The original laboratory open-path lamp measurements instrumental line shape (ILS) spectrometer from water vapour lines have been and extended to secondary...
Abstract The bioclimatology of thermal stress over Europe between 1979 and 2019 was analysed using the Universal Thermal Climate Index (UTCI) derived from ERA5‐HEAT reanalysis. different European regions assessed Köppen–Geiger climate classification. annual number hours with heat (UTCI > 32°C) increased significantly during study period for all subclasses, showing also a clear increase towards southern Europe. highest percentage (20% hours) cold < −13°C) occur northern A significant...
Abstract. The number of intense wildfires may increase further in upcoming years as a consequence climate change. It is therefore necessary to improve our knowledge about the role smoke system, with emphasis on impact particles evolution clouds, precipitation, and cloud radiative properties. Presently, one key aspect research whether or not wildfire can initiate cirrus formation. In this study, we present lidar observations over Limassol, Cyprus, from 27 October 3 November 2020, when...
Abstract. Particle depolarization ratio retrieved from lidar measurements are commonly used for aerosol-typing studies, microphysical inversion, or mass concentration retrievals. The particle is one of the primary parameters that can differentiate several major aerosol components but only if accurate enough. accuracy related to retrieval ratios driving factor assessing and improving uncertainties products. This paper presents different calibration procedures improve quality data. results...
Abstract. The number of intense wildfires may increase in the upcoming years as a consequence climate change. Changing aerosol conditions lead to changes regional and global cloud precipitation pattern. One key aspect research is presently whether or not wildfire smoke particles can initiate ice nucleation. We found strong evidence that aged (dominated by organic particles) originating from North America triggered significant nucleation at temperatures −47 −53 °C caused formation extended...
Abstract The changes in the characteristics of heatwaves over Romania have been analyzed using excess heat factor calculated for two climate change scenarios (RCP4.5 and RCP8.5) from EURO-CORDEX project. were evaluated near future (2021–2050) historical period (1971–2000) as reference. frequency occurrence duration is projected to increase both particular southern Romania. In this region, percentage number between 50 60% RCP4.5 scenario 60–80% RCP8.5 scenario. Also same will by 30–50% These...
On the morning of 23 March 2018, an unusual phenomenon was observed over Romania where southeastern part country covered in a fresh-layer orange snow. The event extensively reported mass-media and social-media raised questions about origin possible impact Even if this type events, intrusions Saharan dust, have been before Romania, Europe general, their occurrence during negative temperature conditions is very rare. dust intrusion occurs mainly spring and, not accompanied by snow at low...
In this study, AERONET (Aerosol Robotic Network) and EARLINET (European Aerosol Research Lidar data from 17 collocated lidar sun photometer stations were used to characterize the optical properties of aerosol their types for 2008–2018 period in various regions Europe. The analysis was done on six cluster domains defined using circulation around each station common features. As concluded measurements, typical particles observed during over Europe medium-sized, medium absorbing with low...
The combined data from the ESA Mobile Raman Polarization and Water Vapor Lidar (EMORAL), LATMOS Bistatic Doppler Cloud Radar System for Atmospheric Studies (BASTA), INOE Microwave Radiometer (HATPRO-G2) have been used to explore synergy spatio-temporal discrimination of polarization molecular, aerosol cloud scattering. threshold-based methodology is proposed perform an aerosol-cloud typing using three instruments. It demonstrated 24 hours observations on 10 June 2019 in Rzecin, Poland. A new...
Heatwaves constitute some of the most extreme meteorological phenomena, profoundly affecting public health. Notwithstanding global focus on heat-related mortality, research this topic in Romania remains scarce. This study seeks to estimate impact mortality from summers 2015 2024, a timeframe characterised by rising temperatures and weather phenomena. Utilising national records that include data all regions population around 19 million, we fatalities related heat throughout timeframe. Initial...
A new 4-element infrasound array (AGIR) of 0.2 km aperture was deployed by National Institute for Earth Physics (NIEP) in August 2024 Eastern Romania, on the Black Sea coast. Between and October, during strong thunderstorms that crossed this region, long-duration trains frequent sharp spikes amplitude associated with lightning discharges were observed into AGIR recordings. Some these storm episodes could be correlated to cyclones moving over greatly affecting Romania's regional climate...
Climate change is increasing the frequency and severity of extreme weather events, presenting substantial risksto both natural constructed settings. In seismically active areas, interplay between climate-induced events geophysical processes may intensify seismic hazards, affecting essential infrastructure ecosystems. The complex project "Competence Center for Change Digital Twin Earth forecasts societal redressement: DTEClimate", funded within framework National Recovery Resilience Plan...
Abstract. In this study, we discuss the differences in total precipitable water (TPW), retrieved from a Cimel sun photometer operating at continental site southeast Europe, between version 3 (V3) and 2 (V2) of AErosol RObotic NETwork (AERONET) algorithms. addition, evaluate performance two algorithms comparing their product with TPW obtained collocated microwave radiometer nearby radiosondes during period 2007–2017. The all three instruments was highly correlated, showing same annual cycle,...
In this work, collocated lidar–radar observations are used to retrieve the vertical profiles of cloud properties above Eastern Mediterranean. Measurements were performed in framework PRE-TECT experiment during April 2017 at Greek atmospheric observatory Finokalia, Crete. Cloud geometrical and microphysical different altitudes derived using Cloudnet target classification algorithm. We found that variable conditions prevailed region resulted complex structures. Mid-level clouds observed 38%...
A high-impact freezing rain event affected parts of southeastern Romania on 24–26 January 2019. The caused extensive damages in Bucharest, the capital city Romania. meteorological analysis highlighted presence a particular synoptic pattern involving high-pressure system advecting cold air mass at low levels, while mid-levels warm and humid intrusion was associated with low-pressure Mediterranean origin. At vertical profiles from ERA5 radiosondes emphasized thick layer between 1000–1400 m...
Abstract. In a 3.5 year long study, the term performance of mobile Bruker EM27/SUN spectrometer, used for greenhouse gases observations, is checked with respect to co-located reference IFS 125HR which part Total Carbon Column Observing Network (TCCON). We find that stable on timescales several years, qualifying it as an useful supplement existing TCCON network in remote areas. For achieving consistent performance, such extension requires careful testing any spectrometers involved by...
Data collected over a period of 18 months (December 2019–May 2021) at the Bucharest–Măgurele Cloudnet station were analysed for first time to determine macrophysical and microphysical cloud properties this site. A total number 1,327,680 vertical profiles containing target classification based on algorithm analysed, which 1,077,858 contained hydrometeors. The highest with hydrometeors (>60%) was recorded in December 2020, being observed mainly below 5 km. Above km, frequency occurrence...
As other accelerator based facilities, the European Spallation Source ESS facility will interact with environment. The Swedish legislation requires a demonstration that sum of doses resulting from exposure any member public to ionizing radiation dose does not exceed specified limit 50 μSv/year. A radiological assessment has been produced provide demonstration. This evaluation was upon actual status design. graded approach adopted through over allowing estimating for all radionuclides and...
Pollen allergies are a growing concern for human health. This is why automated pollen monitoring becoming an important area of research. Machine learning approaches show great promise tackling this issue but these algorithms need large training data sets to perform well. study introduces new set, obtained using Rapid-E particle analyzer, that representative the flora Romania. Pollen, from thirteen species present in Romania, was used developing database with over 100 thousand samples...
Abstract Tornadoes and waterspouts have long fascinated humankind through their presence in myths popular beliefs originally were believed to supernatural causes. The first theories explaining weather phenomena as having natural causes proposed by ancient Greek philosophers. Aristotle was one of the philosophers speculate about formation tornadoes Meteorologica (circa 340 BCE). that associated with wind trapped inside cloud moving a circular motion. When escapes cloud, its descending motion...
Three dimensional recordings gained more and applicability in the study of Cultural Heritage. Firstly, 3D laser scanning proved to be an efficient tool for shape recording artworks. Fast are one advantages offered by this technique, resulting a digital model with high resolution accuracy. In paper several examples application addressed conservation strategy presented, selected case studies, representative each application. All that these techniques offer good methodology, application, cost...
Lidar measurements of 11 smoke layers recorded at Măgurele, Romania, in 2014, 2016, and 2017 are analyzed conjunction with the vegetation type burned biomass area. For identified aerosol pollution layers, mean optical properties intensive parameters computed. The origination is estimated by means HYSPLIT dispersion model, taking into account location fires injection height for each fire. Consequently, fire location, associated land cover acquired satellite-derived products. We explore...