A5052435140- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
- Air Quality and Health Impacts
- Fire effects on ecosystems
- Calibration and Measurement Techniques
- Spectroscopy and Laser Applications
- Solar Radiation and Photovoltaics
- Aeolian processes and effects
- Climate Change and Health Impacts
- Water Quality Monitoring and Analysis
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Vehicle emissions and performance
- Geophysics and Gravity Measurements
- Remote Sensing in Agriculture
- Climate variability and models
- Impact of Light on Environment and Health
- Maritime Transport Emissions and Efficiency
- Analytical Chemistry and Sensors
- Marine and coastal ecosystems
- Lightning and Electromagnetic Phenomena
University of Évora
2015-2024
Institute of Atmospheric Sciences and Climate
2009-2022
National Research Council
2007-2022
Instituto de Ciências da Terra
2017-2021
Earth Science Institute of the Slovak Academy of Sciences
2015-2018
Terra
2017
Centro de Geofísica de Évora
2016
National Academies of Sciences, Engineering, and Medicine
2005-2012
Bulgarian Academy of Sciences
2002
Abstract. A global vertically resolved aerosol data set covering more than 10 years of observations at 20 measurement sites distributed from 63° N to 52° S and 72° W 124° E has been achieved within the Raman polarization lidar network PollyNET. This consists portable, remote-controlled multiwavelength-polarization-Raman lidars (Polly) for automated continuous 24/7 clouds aerosols. PollyNET is an independent, voluntary, scientific network. All Polly feature a standardized instrument design...
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. The CALIPSO Level 3 (CL3) product is the most recent data set produced by observations of Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument onboard and Pathfinder Satellite Observations (CALIPSO) space platform. European Aerosol Research Network (EARLINET), based mainly on multi-wavelength Raman lidar systems, appropriate ground-based reference for calibration/validation studies a continental scale. In this work, are compared against EARLINET monthly averaged...
An unprecedented extreme Saharan dust event was registered in winter time from 20 to 23 February 2017 over the Iberian Peninsula (IP). We report on aerosol optical properties observed under this intrusion through passive and active remote sensing techniques. For that, AERONET (AErosol RObotic NETwork) EARLINET (European Aerosol Research LIdar databases are used. The sites considered are: Barcelona (41.38°N, 2.17°E), Burjassot (39.51°N, 0.42°W), Cabo da Roca (38.78°N, 9.50°W), Évora (38.57°N,...
Abstract. This paper presents a collection of lidar-derived aerosol intensive optical properties for several types, namely the particle linear depolarization ratio, extinction-to-backscatter ratio (lidar ratio) and Ångström exponent. The data collection, named DeLiAn, is based on globally distributed, long-term, ground-based, multiwavelength, Raman polarization lidar measurements, conducted mainly with lidars that have been developed at Leibniz Institute Tropospheric Research. are presented...
Aerosol properties of mineral particles in the far field an African desert dust outbreak were investigated that brought Saharan over Mediterranean different layers to Portugal. The measurements performed inside project Desert Aerosols Portugal (DARPO) which was linked Mineral Dust Experiment (SAMUM). maximum particle mass concentration about 150μgm−3 and corresponding scattering coefficient 130Mm−1 results a efficiency 0.87m2 g−1. aerosol optical depth reached values up 0.53 lidar ratio...
Abstract. We present an automatic aerosol classification method based solely on the European Aerosol Research Lidar Network (EARLINET) intensive optical parameters with aim of building a network-wide tool that could provide near-real-time typing information. The presented depends supervised learning technique and makes use Mahalanobis distance function relates each unclassified measurement to predefined type. As first step (training phase), reference dataset is set up consisting already...
Abstract. The atmospheric boundary layer (ABL) represents the lowermost part of atmosphere directly in contact with Earth's surface. estimation its depth is crucial importance meteorology and for anthropogenic pollution studies. ABL height (ABLH) measurements are usually far from being adequate, both spatially temporally. Thus, different remote sensing sources can be great help growing spatial temporal ABLH measurement capabilities. To this aim, aerosol backscatter profiles widely used as a...
Abstract. An intense and long-lasting Saharan dust outbreak crossed the Iberian Peninsula (IP) from southwest (SW) to northeast (NE) 25 March until 7 April 2021. This work aims assess optical mass contribution of both fine coarse particles along their transport. Five lidar stations were monitoring transport evolution particles, i.e. El Arenosillo/Huelva, Granada, Torrejón/Madrid Barcelona in Spain, Évora Portugal. The particular meteorological conditions determined aerosol scenario overall...
In this paper we present in situ and tropospheric column measurements of NO 2 the Po river basin (northern Italy). The aim work is to provide a quantitative comparison between ground‐based satellite order assess validity spaceborne for estimating emissions evaluate possible climatic effects. study carried out using chemiluminescent instrumentation installed valley, UV/Vis spectrometer at Mount Cimone (44.2°N, 10.7°E, 2165 m asl), obtained from Global Ozone Monitoring Experiment (GOME)...
The most recent works demonstrate that the lidar overlap function, which describes between laser beam and receiver field of view, can be determined experimentally for 355 532 nm channels using Raman signals. Nevertheless, cannot used to determine infrared channel (1064 nm) because their low intensity. In addition, many systems only provide inelastic signals with reasonable signal-to-noise ratio at nighttime. view this fact, work presents a modification method, based on comparison attenuated...
Abstract. We present the evaluation activity of European Aerosol Research Lidar Network (EARLINET) for quantitative assessment Level 2 aerosol backscatter coefficient product derived by Cloud-Aerosol Transport System (CATS) aboard International Space Station (ISS; Rodier et al., 2015). The study employs correlative CATS and EARLINET measurements within a 50 km distance between ground station ISS overpass as close in time possible, typically with starting or stopping performed measurement...
Three volcanic plumes were detected during the Tajogaite volcano eruptive activity (Canary Islands, Spain, September–December 2021) over Iberian Peninsula. The spatiotemporal evolution of these events is characterised by combining passive satellite remote sensing and ground-based lidar sun-photometer systems. inversion algorithm GRASP used with a suite instruments such as lidar/ceilometer from eight sites at different locations throughout Satellite observations showed that ash remained...
This work aimed to study the atmospheric boundary layer height (ABLH) from COSMIC-2 refractivity data, endeavoring refine existing ABLH detection algorithms and scrutinize resulting spatial seasonal distributions. Through validation analyses involving different ground-based methodologies (involving data lidar, ceilometer, microwave radiometers, radiosondes), optimal determination relied on identifying lowest gradient negative peak with a magnitude at least τ% times minimum magnitude, where τ...
Abstract. Mineral dust has a key role in the Earth's radiative balance, and it become significant over Iberian Peninsula (IP), where Saharan outbreaks have seemed to increase frequency intensity. This study quantifies direct effect (DRE) short-wave range (SW) during an intense persistent springtime episode IP. In particular, vertical distribution of optical properties was derived at five lidar stations, Global Atmospheric Model (GAME) used for transfer simulations. Moreover, this innovates...
The study of lake–atmosphere interactions was the main purpose a 2014 summer experiment at Alqueva reservoir in Portugal. Near-surface fluxes momentum, heat and mass [water vapour (H<sub>2</sub>O) carbon dioxide (CO<sub>2</sub>)] were obtained with new Campbell Scientific's IRGASON Integrated Open-Path CO<sub>2</sub>/H<sub>2</sub>O Gas Analyser 3D Sonic Anemometer between 2 June October. On average, releasing energy form sensible latent flux during period. At end 75 d, total evaporation...
This paper analyses the influence of extreme Saharan desert dust (DD) event on shortwave (SW) and longwave (LW) radiation at EARLINET/AERONET Évora station (Southern Portugal) from 4 up to 7 April 2011. There was also some cloud occurrence in period. In this context, it is essential quantify effect presence aerosol radiative forcing. A transfer model initialized with optical properties, vertical properties meteorological atmospheric profiles. The intercomparison between instantaneous TOA...
Abstract. The Global Observing System (GOS) has encountered some limitations due to a lack of worldwide real-time wind measurements. In this context, the European Space Agency (ESA) developed Aeolus satellite mission, based on ALADIN (Atmospheric Laser Doppler Instrument) lidar; mission aims obtain near-real-time retrievals at global scale. As spin-off products, instrument retrieves aerosol optical properties such as particle backscatter and extinction coefficients. work, validation...
Abstract. The purpose of this study is to investigate the ability Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI) derive accurate geometrical features lofted aerosol layers, selecting Mediterranean Basin as area. Comparisons with ground-based correlative measurements constitute a key component in validation passive and active satellite products. For purpose, we use observations from quality-controlled lidar stations reporting European Aerosol Research Lidar Network (EARLINET). An...
This work presents a comparison of integrated water vapor (IWV) data recorded from microwave radiometer (MWR) and sun-photometer (SP) using global navigation satellite system (GNSS) IWV as reference in five mid-latitude sites Portugal Spain (2003–2021). A very high correlation is obtained for both instruments (R2 between 0.94 0.98), although, while MWR shows wet bias, SP exhibits dry one. In addition, dependence mean bias error (MBE) standard deviation (SD) on has been observed, increasing...
Research Highlights: Daily airborne Cupressaceae pollen disruption ranged from 20 to 90%; relative humidity (RH), rainfall and atmospheric pressure (AtP) were the major meteorological determinants of this phenomenon. Background Objectives: family includes several species that are widely used as ornamental plants pollinating in late winter-early spring might be responsible for allergic outbreaks. may favour allergen dissemination, potentiating its allergenicity. The aim work was characterize...