A5031626863- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Calibration and Measurement Techniques
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
- Aeolian processes and effects
- Fire effects on ecosystems
- Geophysics and Gravity Measurements
- Air Quality and Health Impacts
- Remote Sensing in Agriculture
- Spectroscopy and Laser Applications
- Planetary Science and Exploration
- Climate variability and models
- Wind and Air Flow Studies
- Optical Polarization and Ellipsometry
- Astro and Planetary Science
- Optical and Acousto-Optic Technologies
- Air Traffic Management and Optimization
- Advanced Optical Sensing Technologies
- Isotope Analysis in Ecology
- Aviation Industry Analysis and Trends
- Earthquake Detection and Analysis
- Scientific Measurement and Uncertainty Evaluation
National Institute of Research and Development for Optoelectronics
2015-2024
National Institute for Aerospace Research Elie Carafoli
2018
Alexandru Ioan Cuza University
2011
This paper focuses on optical and microphysical properties of long‐range transported biomass burning (BB) aerosols their variation with atmospheric evolution (ageing), as observed by a multiwavelength Raman lidar, part EARLINET (European Aerosol LIdar NETwork). Chemical analysis the aerosol was done using colocated mass spectrometer (AMS). One relevant parameter for ageing process is Ångström exponent. In our study, we find that it decreases from 2 fresh to 1.4–0.5 aged smoke particles. The...
Abstract. Six months of stratospheric aerosol observations with the European Aerosol Research Lidar Network (EARLINET) from August 2017 to January 2018 are presented. The decay phase an unprecedented, record-breaking perturbation caused by wildfire smoke is reported and discussed in terms geometrical, optical, microphysical properties. Enormous amounts were injected into upper troposphere lower stratosphere over fire areas western Canada on 12 during strong thunderstorm–pyrocumulonimbus...
Abstract. Systematic measurements of dust concentration profiles at a continental scale were recently made possible by the development synergistic retrieval algorithms using combined lidar and sun photometer data establishment robust remote-sensing networks in framework Aerosols, Clouds, Trace gases Research InfraStructure Network (ACTRIS)/European Aerosol Lidar (EARLINET). We present methodology for these capabilities as tool examining performance transport models. The includes...
Abstract. This paper introduces the recent European Aerosol Research Lidar Network (EARLINET) quality-assurance efforts at instrument level. Within two dedicated campaigns and five single-site intercomparison activities, 21 EARLINET systems from 18 stations were intercompared between 2009 2013. A comprehensive strategy for campaign setup data evaluation has been established. Eleven nine participated in Intercomparison (EARLI09). In this campaign, three reference qualified which served as...
Abstract. This paper presents a new application of assimilating lidar signals to aerosol forecasting. It aims at investigating the impact ground-based network on analysis and short-term forecasts aerosols through case study in Mediterranean basin. To do so, we employ data assimilation (DA) algorithm based optimal interpolation method developed Polair3D chemistry transport model (CTM) Polyphemus air quality modelling platform. We assimilate hourly averaged normalised range-corrected (PR2)...
Abstract. Multi-wavelength depolarization Raman lidar measurements from Magurele, Romania are used in this study along with simulated mass-extinction efficiencies to calculate the mass concentration profiles of different atmospheric components, due their contribution 532 nm backscatter coefficient. Linear particle ratio (δpart) was computed using relative amplification factor and system-dependent molecular depolarization. The low depolarizing component considered as urban/smoke, a mean δpart...
Abstract. In the framework of ACTRIS (Aerosols, Clouds, and Trace Gases Research Infrastructure Network) summer 2012 measurement campaign (8 June–17 July 2012), EARLINET organized performed a controlled exercise feasibility to demonstrate its potential perform operational, coordinated measurements deliver products in near-real time. Eleven lidar stations participated which started on 9 at 06:00 UT ended 72 h later 12 UT. For first time, single calculus chain (SCC) – common developed within...
Abstract. Lidar depolarization measurements distinguish between spherical and non-spherical aerosol particles based on the change of polarization state emitted received signal. The particle shape information in combination with other optical properties allows characterization different types retrieval microphysical properties. Regarding inversions, lidar technique is becoming a key method since can be used by algorithms spheres spheroids, optimizing procedure. Thus, identification error...
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 simultaneous analysis of aerosol microphysical properties profiles at different European stations is made in the framework ChArMEx/EMEP 2012 field campaign (9–11 July 2012). During and support this campaign, five lidar ground-based (Athens, Barcelona, Bucharest, Évora, Granada) performed 72 h continuous measurements collocated coincident sun-photometer measurements. Therefore it was possible to retrieve volume concentration with Lidar Radiometer Inversion Code (LIRIC). Results...
Abstract. High-resolution mapping of pollutants based on mobile observation facilitates deep understanding air pollutant distributions within a city. This approach fosters science-based decisions to improve quality, by adding the existing but not optimally distributed permanent monitoring stations. In this study, we developed high-resolution concentration maps nitrogen dioxide (NO2), particulate matter (PM10) and ultrafine particles (UFP) for Bucharest, Romania, evaluate spatial variation...
This study investigates the impact of a thermal power plant site on air quality in Bucharest, Romania. It emphasizes importance accurate pollutant inmission measurements urban areas by utilizing mobile low-cost sensors, Copernicus’ Copernicus Atmosphere Monitoring Service (CAMS) and Land (CLMS), satellite retrieval to better understand climate change drivers their potential near- surface concentrations column densities NO2, CO, PM (particulate matter). focuses attention need considering...
Abstract. In this study we report on airborne imaging DOAS measurements of NO2 from two flights performed in Bucharest during the AROMAT campaign (Airborne ROmanian Measurements Aerosols and Trace gases) September 2014. These were with Airborne Differential Optical Absorption Spectroscopy (DOAS) instrument for Atmospheric Pollution (AirMAP) provide nearly gapless maps column densities below aircraft a high spatial resolution better than 100 m. The air mass factors, which are needed to...
Abstract. A decade-long (2015–2024) analysis of aerosol properties was conducted at RADO-Bucharest station in Romania a key atmospheric observational site the Eastern border Aerosol, Clouds and Trace gases Research Infra-structure (ACTRIS). This study aims to characterize optical microphysical aerosols, classify predominant types, investigate their seasonal variability transport pathways based on long-term multiwavelength Raman lidar sun/sky/lunar photometer measurements. Results indicate...
The Poland-AOD aerosol research network was established in 2011 to improve aerosol–climate interaction knowledge and provide a real-time historical, comprehensive, quantitative database for the optical properties distribution over Poland. consists of institutions private owners operating 10 measurement stations an organization responsible model transport simulations. collaboration provides observations spectral depth (AOD), Ångstrom Exponent (AE), incoming shortwave (SW) longwave (LW)...
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,...
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 components, but only if accurate enough. uncertainties related to retrieval ratios main factor in determining accuracy derived such studies. This paper presents an extended analysis different calibration procedures, order reduce...
Abstract. This paper introduces the recent EARLINET quality-assurance efforts at instrument level. Within two dedicated campaigns and five single-site intercomparison activities 21 systems from 18 stations were intercompared between 2009 2013. A comprehensive strategy for campaign setup data evaluation has been established. Eleven nine participated in Lidar Intercomparison (EARLI09). In this campaign, three reference qualified which served as traveling standards thereafter. other have...
Abstract. The Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaigns took place in Romania September 2014 August 2015. They focused on two sites: the Bucharest urban area large power plants Jiu Valley. main objectives were to test recently developed airborne observation systems dedicated air quality studies verify their applicability for validation space-borne atmospheric missions such as TROPOspheric Monitoring Instrument (TROPOMI)/Sentinel-5 Precursor (S5P). We...
Abstract Near-Earth Objects (NEO) are the topic of several research studies, with objects smaller than 1km in size posing most threats and being less understood this scientific domain. The Asteroid Impact Deflection Assessment (AIDA) mission involves NASA ESA main goal to perform analyze asteroid deflection using Kinetic Impactor technique. target is Didymos-B, a moon binary called Didymos. oversees Double Redirection Test (DART probe), responsible for HERA probe, that will measure Dydimos-B...
The aim of this paper is to analyze how local and atmospheric conditions influence pollutants' distribution.Two different sites in Romania were chosen for measurement campaigns: Surlari (44° 34', 26° 19') located into a forest near lake, suburban area, Magurele 21', 2'), where the anthropogenic activities dominate.The same equipments measurements surface ozone, CO, NO 2 , PM 10 used at two sites.The performed summer 2012, 14 days.The intercomparison between data sets pollutant's...
Rayleigh-Brillouin scattering is the basis of many remote sensing techniques, including high spectral resolution lidar measurements aerosols and wind. spectra can be accurately estimated using physics-based models like so-called Tenti's S6 Pan's S7 models. Unfortunately, these are computationally expensive bottleneck for real-time processing iterative parameter estimation problems. This short article describes a very efficient linear approximation based on Principal Component Analysis (PCA)....