Dimitris Balis
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View article: The Spatiotemporal Variability of Ozone and Nitrogen Dioxide in the Po Valley Using In Situ Measurements and Model Simulations
The Spatiotemporal Variability of Ozone and Nitrogen Dioxide in the Po Valley Using In Situ Measurements and Model Simulations Open
The Po Valley is depicted in the literature as a region with one of the most severe air pollution profiles in Europe, frequently exceeding the permitted statutory concentration limits for several air pollutants. The aim of this paper is to…
View article: Spatiotemporal Variability of Ozone and Nitrogen Dioxide in the Po Valley Using In Situ Measurements and Model Simulations
Spatiotemporal Variability of Ozone and Nitrogen Dioxide in the Po Valley Using In Situ Measurements and Model Simulations Open
The Po Valley is depicted in literature as a region with one of the most severe air pollution profiles in Europe, frequently exceeding the permitted statutory concentration limits for several air pollutants. The aim of this paper is to pre…
View article: Direct sun total NO2 column measurements at Thessaloniki, Greece with two DOAS systems and comparisons with S5P/TROPOMI
Direct sun total NO2 column measurements at Thessaloniki, Greece with two DOAS systems and comparisons with S5P/TROPOMI Open
View article: Extreme wildfires over Northern Greece during Summer 2023 – Part B. Adverse effects on regional air quality
Extreme wildfires over Northern Greece during Summer 2023 – Part B. Adverse effects on regional air quality Open
View article: Sources and Variability of Greenhouse Gases over Greece
Sources and Variability of Greenhouse Gases over Greece Open
This study provides an overview of the atmospheric drivers of climate change over Greece (Eastern Mediterranean), focusing on greenhouse gases (GHG: carbon dioxide, CO2; methane, CH4; etc.). CO2 in Greece is mostly produced by energy produ…
View article: Large-Scale Network-Based Observations of a Saharan Dust Event across the European Continent in Spring 2022
Large-Scale Network-Based Observations of a Saharan Dust Event across the European Continent in Spring 2022 Open
Between 14 March and 21 April 2022, an extensive investigation of an extraordinary Saharan dust intrusion over Europe was performed based on lidar measurements obtained by the European Aerosol Research Lidar Network (EARLINET). The dust ep…
View article: Natural Aerosols, Gaseous Precursors and Their Impacts in Greece: A Review from the Remote Sensing Perspective
Natural Aerosols, Gaseous Precursors and Their Impacts in Greece: A Review from the Remote Sensing Perspective Open
The Mediterranean, and particularly its Eastern basin, is a crossroad of air masses advected from Europe, Asia and Africa. Anthropogenic emissions from its megacities meet over the Eastern Mediterranean, with natural emissions from the Sah…
View article: Shifts in maritime trade routes as a result of Red Sea Shipping Crisis detected in TROPOMI NO2 data
Shifts in maritime trade routes as a result of Red Sea Shipping Crisis detected in TROPOMI NO2 data Open
Observations from space-borne spectrometers have been lately used to quantify shipping emissions of nitrogen oxides (ΝΟΧ). Here we present a method that enhances the shipping signal of NO2 TROPOspheric MOnitoring Instrument (TROPOMI) satel…
View article: Matching opportunistic column measurements of CO2 with pixel-wise scaled emission tracers from a forward model for the urban area of Thessaloniki – Can we detect strong sources?
Matching opportunistic column measurements of CO2 with pixel-wise scaled emission tracers from a forward model for the urban area of Thessaloniki – Can we detect strong sources? Open
A rapid reduction in greenhouse gas emissions is critical to limit global warming. In order to act effectively, it is important to be able to monitor emissions and their changes over time. A special interest lies in the monitoring of urban…
View article: Extreme Wildfires Over Northern Greece During Summer 2023 – Part B. Adverse Effects on Regional Air Quality
Extreme Wildfires Over Northern Greece During Summer 2023 – Part B. Adverse Effects on Regional Air Quality Open
View article: Sentinel-5P/TROPOspheric Monitoring Instrument CH4 and CO Total Column Validation over the Thessaloniki Collaborative Carbon Column Observing Network Site, Greece
Sentinel-5P/TROPOspheric Monitoring Instrument CH4 and CO Total Column Validation over the Thessaloniki Collaborative Carbon Column Observing Network Site, Greece Open
Carbon monoxide, XCO, and methane, XCH4, column-averaged dry-air mole fractions (DMFs), observed by the TROPOspheric Monitoring Instrument (TROPOMI) on board Sentinel-5P (S-5P), are validated against those obtained from a Bruker…
View article: Variability of Aerosol Properties Using AERONET Retrievals and Relation between Aerosol Optical Depth and PM Levels at Ioannina, Greece 2022
Variability of Aerosol Properties Using AERONET Retrievals and Relation between Aerosol Optical Depth and PM Levels at Ioannina, Greece 2022 Open
In this study, we try to characterize local aerosols over the city of Ioannina for the first time using continuous AERONET CIMEL Sun–Sky spectral photometer measurements. The instrument, which belongs to the Laboratory of Atmospheric…
View article: Performance of the Aerosol Species Separation Algorithm (ASSA) Using Data from a Raman-Depolarization Lidar System at Thessaloniki, Greece
Performance of the Aerosol Species Separation Algorithm (ASSA) Using Data from a Raman-Depolarization Lidar System at Thessaloniki, Greece Open
The aerosol species separation algorithm (ASSA) is a method designed to retrieve vertical concentration profiles of individual aerosol species by combining measurements from lidar systems and spectrophotometers. The ASSA operates as a forw…
View article: Analyzing Four Years of Ground-Based Measurements of XCO2 and XCO over Thessaloniki, Greece Using FTIR Spectroscopy
Analyzing Four Years of Ground-Based Measurements of XCO2 and XCO over Thessaloniki, Greece Using FTIR Spectroscopy Open
The issue of atmospheric pollution in urban centers has become a growing concern in recent years. The increasing levels of greenhouse gases in the atmosphere are a major contributor to atmospheric pollution, and it is imperative to monitor…
View article: Lidar, Ceilometer and Drone-Borne Aerosol Profiling during the EVIAN 2022 Campaign in Cyprus
Lidar, Ceilometer and Drone-Borne Aerosol Profiling during the EVIAN 2022 Campaign in Cyprus Open
In this study, we present primary results from the aErosol Vertical profiling with lIdars And droNes (EVIAN) campaign, under the ATMO-ACCESS project, which took place in Nicosia, Cyprus (35°10′21″ N, 33°21′54&Prim…
View article: Supplementary material to "Combined sun-photometer/lidar inversion: lessons learned during the EARLINET/ACTRIS COVID-19 Campaign"
Supplementary material to "Combined sun-photometer/lidar inversion: lessons learned during the EARLINET/ACTRIS COVID-19 Campaign" Open
View article: First assessment of Aeolus Standard Correct Algorithm particle backscatter coefficient retrievals in the eastern Mediterranean
First assessment of Aeolus Standard Correct Algorithm particle backscatter coefficient retrievals in the eastern Mediterranean Open
Since 2018, the Aeolus satellite of the European Space Agency (ESA) has acquired wind HLOS (horizontal line-of-sight) profiles throughout the troposphere and up to the lower stratosphere, filling a critical gap in the Global Observing Syst…
View article: A Measurement Campaign in Thessaloniki, Greece, to Detect and Estimate Local Greenhouse Gas Emissions
A Measurement Campaign in Thessaloniki, Greece, to Detect and Estimate Local Greenhouse Gas Emissions Open
The reduction of carbon emissions is required to limit global warming. Thus, measurement-based methods to monitor the progress in reducing emissions are essential. A significant part of the global emissions is produced in urban areas where…
View article: Assessment of the NO2 Spatio-Temporal Variability over Thessaloniki, Greece, Using MAX-DOAS Measurements and Comparison with S5P/TROPOMI Observations
Assessment of the NO2 Spatio-Temporal Variability over Thessaloniki, Greece, Using MAX-DOAS Measurements and Comparison with S5P/TROPOMI Observations Open
In this article, we investigate the spatio-temporal variability of tropospheric NO2 Vertical Column Densities (VCDs) and surface concentrations that were retrieved using Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) me…
View article: Validation of the TROPOMI/S5P aerosol layer height using EARLINET lidars
Validation of the TROPOMI/S5P aerosol layer height using EARLINET lidars Open
The purpose of this study is to investigate the ability of the Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI) to derive accurate geometrical features of lofted aerosol layers, selecting the Mediterranean Basin as the study area. …
View article: TROPOMI/S5P Total Column Water Vapor validation against AERONET ground-based measurements
TROPOMI/S5P Total Column Water Vapor validation against AERONET ground-based measurements Open
Water vapor plays an important role in the greenhouse effect, rendering it an atmospheric constituent that requires continuous and global monitoring by different types of remote sensing instruments. The TROPOspheric Monitoring Instrument S…
View article: Long-Term and Short-Term Variability of Xco2, Xch4 And Xco as Observed by the Thessaloniki Coccon Site and Comparison with Cams Model
Long-Term and Short-Term Variability of Xco2, Xch4 And Xco as Observed by the Thessaloniki Coccon Site and Comparison with Cams Model Open
View article: Evaluation of Aerosol Typing with Combination of Remote Sensing Techniques with In Situ Data during the PANACEA Campaigns in Thessaloniki Station, Greece
Evaluation of Aerosol Typing with Combination of Remote Sensing Techniques with In Situ Data during the PANACEA Campaigns in Thessaloniki Station, Greece Open
Two measurement campaigns were conducted at Thessaloniki, an urban station, (40.5°N, 22.9°E; 60 m) in the frame of the PANhellenic infrastructure for Atmospheric Composition and climatEchAnge (PANACEA) project. The first one covers the per…
View article: Comparison of S5P/TROPOMI Inferred NO2 Surface Concentrations with In Situ Measurements over Central Europe
Comparison of S5P/TROPOMI Inferred NO2 Surface Concentrations with In Situ Measurements over Central Europe Open
The aim of this paper is to evaluate the surface concentration of nitrogen dioxide (NO2) inferred from the Sentinel-5 Precursor Tropospheric Monitoring Instrument (S5P/TROPOMI) NO2 tropospheric column densities over Central Europe for two …
View article: Comparison of S5P/TROPOMI Inferred NO<sub>2</sub> Surface Concentrations with in-situ Measurements over Central Europe
Comparison of S5P/TROPOMI Inferred NO<sub>2</sub> Surface Concentrations with in-situ Measurements over Central Europe Open
The aim of this paper is to evaluate the surface concentration of nitrogen dioxide (NO2) inferred from the Sentinel-5 Precursor TROPOspheric Monitoring Instrument (S5P/TROPOMI) NO2 tropospheric column densities over Central Europe for two …
View article: Comment on amt-2022-205
Comment on amt-2022-205 Open
Since 2018, the Aeolus satellite of the European Space Agency (ESA) acquires wind HLOS (horizontal line-of-sight) profiles throughout the troposphere and up to the lower stratosphere, filling a critical gap of the Global Observing System (…
View article: Comment on amt-2022-205
Comment on amt-2022-205 Open
Since 2018, the Aeolus satellite of the European Space Agency (ESA) acquires wind HLOS (horizontal line-of-sight) profiles throughout the troposphere and up to the lower stratosphere, filling a critical gap of the Global Observing System (…
View article: Validation of the TROPOMI/S5P Aerosol Layer Height using EARLINET lidars
Validation of the TROPOMI/S5P Aerosol Layer Height using EARLINET lidars Open
The purpose of this study is to investigate the ability of the Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI) to derive accurate geometrical features of lofted aerosol layers on a continental scale. Comparisons with ground-based …
View article: Supplementary material to "First assessment of Aeolus L2A particle backscatter coefficient retrievals in the Eastern Mediterranean"
Supplementary material to "First assessment of Aeolus L2A particle backscatter coefficient retrievals in the Eastern Mediterranean" Open
View article: First assessment of Aeolus L2A particle backscatter coefficient retrievals in the Eastern Mediterranean
First assessment of Aeolus L2A particle backscatter coefficient retrievals in the Eastern Mediterranean Open
Since 2018, the Aeolus satellite of the European Space Agency (ESA) acquires wind HLOS (horizontal line-of-sight) profiles throughout the troposphere and up to the lower stratosphere, filling a critical gap of the Global Observing System (…