A5067684115- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Fire effects on ecosystems
- Aeolian processes and effects
- Impact of Light on Environment and Health
- Solar Radiation and Photovoltaics
- COVID-19 impact on air quality
- Air Quality and Health Impacts
- Remote Sensing in Agriculture
National Research Council - Institute of Methodologies for Environmental Analysis
2020-2025
National Technical University of Athens
2018-2024
National and Kapodistrian University of Athens
2020
Abstract. Remote sensing measurements of aerosols using depolarization Raman lidar systems from four EARLINET (European Aerosol Research Lidar Network) stations are used for a comprehensive analysis Saharan dust events over the Mediterranean basin in period 2014–2017. In this period, 51 regarding geometrical, optical and microphysical properties were selected, classified assessed according to their radiative forcing effect on atmosphere. From west east, Granada, Potenza, Athens Limassol...
Abstract. We introduce an automated aerosol type classification method, called Source Classification Analysis (SCAN). SCAN is based on predefined and characterized source regions, the time that air parcel spends above each geographical region, a number of additional criteria. The output compared with two independent methods, which use intensive optical parameters from lidar data: (1) Mahalanobis distance automatic (MD) (2) neural network typing algorithm (NATALI). In this paper, data...
We present a multi-year study of Saharan dust intrusions on mountainous site located in the central Mediterranean Basin regarding their aerosol optical and geometrical properties. The observations were carried out at Consiglio Nazionale delle Ricerche-Istituto di Metodologie per l’Analisi Ambientale (CNR-IMAA) Potenza (40,360N, 15,440E), Italy, from March 2010 to October 2022, using ACTRIS (Aerosol Clouds Trace Gases Research InfraStructure). A total 101 night-time lidar measurements...
The increasing prevalence of wildfire smoke layers in the upper troposphere and lower stratosphere, likely driven by climate change, highlights their growing influence on system. These plumes travel across continents affecting through multiple pathways, emphasizing need for accurate representation global models (GCMs). Among these this study focuses role particles cirrus cloud formation acting as efficient ice-nucleating (INPs).The mechanisms governing formation—whether dominated...
This study presents a detailed analysis of the optical and microphysical properties biomass burning aerosols from two distinct smoke plumes observed on 16 July 2024 at CIAO atmospheric observatory in Potenza, Italy. The lower layer corresponds to local wildfire, while upper correspond  a long-range transported plume Canada. objective is highlight significant differences their characteristics impacts.The fire was characterized not only with lidar measurements, but all remote sensing...
Vertical profiling of aerosol particles was performed during the PANhellenic infrastructure for Atmospheric Composition and climatE chAnge (PANACEA) winter campaign (10 January 2020–7 February 2020) over city Ioannina, Greece (39.65° N, 20.85° E, 500 m a.s.l.). The middle-sized Ioannina suffers from wintertime air pollution episodes due to biomass burning (BB) domestic heating activities. lidar technique applied PANACEA on city, fill gap knowledge spatio-temporal evolution vertical mixing...
We report on a long-lasting (10 days) Saharan dust event affecting large sections of South-Eastern Europe by using synergy lidar, satellite, in-situ observations and model simulations over Athens, Greece. The measurements (11–20 May 2020), performed during the confinement period due to COVID-19 pandemic, revealed interesting features aerosol properties in absence important air pollution sources European continent. During event, moderate optical depth (AOD) values (0.3–0.4) were observed...
The aim of this paper is to study the spatio-temporal evolution a long-lasting Canadian biomass burning event that affected Europe in August 2018. produced aerosol layers which were observed during their transport from Canada 16 26 2018 using active remote sensing data space-borne system Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO). total number detected was 745 42% identified as pure burning. remaining 58% attributed smoke mixed with: polluted dust (34%),...
In the present study, we aerosol optical properties and radiative forcing (RF) of tropospheric stratospheric smoke layers, observed by Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observation (CALIPSO) satellite, during extraordinary Australian biomass burning (BB) event in 2019–2020. These BB layers were studied analyzed within longitude range 140° E–20° W latitude band 20°–60° S, as they gradually transported from banks to South American continent. found be trapped Andes circulation,...
Abstract. Since 2018, the Aeolus satellite of European Space Agency (ESA) has acquired wind HLOS (horizontal line-of-sight) profiles throughout troposphere and up to lower stratosphere, filling a critical gap in Global Observing System (GOS). Aeolus, carrying ALADIN (Atmospheric LAser Doppler INstrument), first UV HSRL (High Spectral Resolution Lidar) lidar ever placed space, provides also vertically resolved optical properties particulates (aerosols clouds). The present study focuses on...
Between 14 March and 21 April 2022, an extensive investigation of extraordinary Saharan dust intrusion over Europe was performed based on lidar measurements obtained by the European Aerosol Research Lidar Network (EARLINET). The episode divided into two distinct periods, one in April, characterized different transport paths. aerosol layers were studied 18 EARLINET stations, examining characteristics during four regions (M-I, M-II, M-III, M-IV A-I, A-II, A-III, A-IV, respectively), focusing...
Abstract. Biomass burning episodes measured at 14 stations of the European Aerosol Research Lidar Network (EARLINET) over 2008–2017 were analysed using methodology described in "Biomass events by lidars EARLINET – Part 1: Data analysis methodology" (Adam et al., 2020, this issue). The smoke layers identified lidar optical properties profiles. A number 795 for which we least one intensive parameter was analysed. These geographically distributed as follows: 399 observed South-East Europe, 119...
Mean optical and microphysical aerosol properties of long-range transported biomass burning (BB) particles mixtures are presented from a 9-year (2011–2019) data set multiwavelength Raman lidar data, obtained by the EOLE over city Athens (37.58° N, 23.47° E), Greece. We studied 34 layers characterized as: (1) smoke; (2) smoke + continental polluted, (3) mixed dust. found, mainly, small-sized aerosols with mean backscatter-related (355 nm/532 nm, 532 nm/1064 nm) values Ångström exponent (AE)...
The technical specifications and advances/ upgrades of the stationary (EOLE) mobile (AIAS) lidars located at National Technical University Athens (NTUA) are presented in this paper. EOLE is a multi-wavelength combined backscatter/Raman lidar system, which part EARLINET network since May 2000. AIAS 532 nm elastic depolarization system. Both instruments have been upgraded during 2019, frame PANACEA to be Greek Research Infrastructure for aerosol research, under umbrella European Strategy Forum...
Abstract. Remote sensing measurements of aerosols using depolarization Raman Lidar systems from 4 EARLINET (European Aerosol research Network) stations are used for a comprehensive analysis Saharan dust events over the Mediterranean basin in period 2014–2017. In this period, we selected to study 51 regarding geometrical, optical and microphysical properties particles, classifying them assessing their radiative forcing effect on atmosphere. From West East, Granada, Potenza, Athens Limassol...
Desert dust, as the most abundant aerosol type in atmosphere, plays an important role Earth’s climate and weather by influencing radiation balance. The direct radiative effect of dust involves scattering absorption both solar thermal radiation; however, net contribution to forcing remains quite uncertain [1]. This depends on properties particles such their size composition (mineralogy), which turn are related origin any changes they undergo (e.g., mixing) during transport....
Abstract. We introduce an automated aerosol type classification method, called Source Classification ANalysis (SCAN). SCAN is based on predefined and characterized source regions, the time that air parcel spends above each geographical region a number of additional criteria. The output compared with two independent methods, which use intensive optical parameters from lidar data: (1) Mahalanobis distance automatic (MD) (2) Neural Network Aerosol Typing Algorithm (NATALI). In this paper, data...
A long-lasting biomass burning event affected Europe from 27 August to 3 September 2018. The aerosol layers were observed with ground- and space-based lidars in heights ranged between 2-7 km (a.s.l.). mean backscatter coefficient for the ground-based stations 0.29 1.51 Mm -1 sr , while CALIPSO retrieved values 0.43 1.83 . Moreover, Ångström exponent (AE b ) values, relevant backscatter, 0.83 1.04 aforementioned lidar stations. At same time, AE obtained 0.17 1.89. particle depolarization...
Abstract. Since 2018, the Aeolus satellite of European Space Agency (ESA) acquires wind HLOS (horizontal line-of-sight) profiles throughout troposphere and up to lower stratosphere, filling a critical gap Global Observing System (GOS). Aeolus, carrying ALADIN, first UV HSRL Doppler lidar ever placed in space, along with provides also vertically resolved optical properties particulates (aerosols, hydrometeors). The present study focuses on assessment L2A particulate backscatter coefficient,...