Konstantinos Dimitriou; Maria Tsagkaraki; Kalliopi Tavernaraki; Kyriaki Papoutsidaki; Maria Anastasia Malandraki; Kalliopi Petrinoli; Eleni Liakakou; Aikaterini Bougiatioti; Nikolaos Mihalopoulos. The effect of mixed layer across air mass trajectory pathways on PM2.5 constituent levels: The case of a major urban center in the Eastern Mediterranean. Atmospheric Pollution Research 2024, 15 .

Konstantinos Dimitriou, Maria Tsagkaraki, Kalliopi Tavernaraki, Kyriaki Papoutsidaki, Maria Anastasia Malandraki, Kalliopi Petrinoli, Eleni Liakakou, Aikaterini Bougiatioti, Nikolaos Mihalopoulos. The effect of mixed layer across air mass trajectory pathways on PM2.5 constituent levels: The case of a major urban center in the Eastern Mediterranean. Atmospheric Pollution Research. 2024; 15 (6):.

Konstantinos Dimitriou; Maria Tsagkaraki; Kalliopi Tavernaraki; Kyriaki Papoutsidaki; Maria Anastasia Malandraki; Kalliopi Petrinoli; Eleni Liakakou; Aikaterini Bougiatioti; Nikolaos Mihalopoulos. 2024. "The effect of mixed layer across air mass trajectory pathways on PM2.5 constituent levels: The case of a major urban center in the Eastern Mediterranean." Atmospheric Pollution Research 15, no. 6: .

The study assesses the direct effects of climate change by 2060, including extreme events, on the productivity of regional crop farming and livestock in Greece, and the broader socio-economic effects on the agri-food and other sectors. Different approaches (i.e., agronomic models, statistical regression models, and equations linking thermal stress to livestock output) were combined to estimate the effects on productivity from changes in the average values of climatic parameters, and subsequently the direct economic effects from this long-term climate change. Recorded damages from extreme events together with climatic thresholds per event and crop were combined to estimate the direct economic effects of these extremes. The broader socio-economic effects were then estimated through input–output analysis. Under average levels of future extreme events, the total direct economic losses for Greek agriculture due to climate change will be significant, from EUR 437 million/year to EUR 1 billion/year. These losses approximately double when indirect effects on other sectors using agricultural products as inputs (e.g., food and beverage, hotels, and restaurants) are considered, and escalate further under a tenfold impact of extreme events. Losses in the GDP and employment are moderate at the national level, but significant in regions where the contribution of agriculture is high.

Elena Georgopoulou; Nikos Gakis; Dimitris Kapetanakis; Dimitris Voloudakis; Maria Markaki; Yannis Sarafidis; Dimitris P. Lalas; George P. Laliotis; Konstantina Akamati; Iosif Bizelis; Markos Daskalakis; Sevastianos Mirasgedis; Iordanis Tzamtzis. Climate Change Risks for the Mediterranean Agri-Food Sector: The Case of Greece. Agriculture 2024, 14, 770 .

Elena Georgopoulou, Nikos Gakis, Dimitris Kapetanakis, Dimitris Voloudakis, Maria Markaki, Yannis Sarafidis, Dimitris P. Lalas, George P. Laliotis, Konstantina Akamati, Iosif Bizelis, Markos Daskalakis, Sevastianos Mirasgedis, Iordanis Tzamtzis. Climate Change Risks for the Mediterranean Agri-Food Sector: The Case of Greece. Agriculture. 2024; 14 (5):770.

Elena Georgopoulou; Nikos Gakis; Dimitris Kapetanakis; Dimitris Voloudakis; Maria Markaki; Yannis Sarafidis; Dimitris P. Lalas; George P. Laliotis; Konstantina Akamati; Iosif Bizelis; Markos Daskalakis; Sevastianos Mirasgedis; Iordanis Tzamtzis. 2024. "Climate Change Risks for the Mediterranean Agri-Food Sector: The Case of Greece." Agriculture 14, no. 5: 770.

North Africa, the Middle East, and Europe (NAMEE domain) host a variety of suspended particles characterized by different optical and microphysical properties. In the current study, we investigate the importance of the lidar ratio (LR) on Cloud-Aerosol Lidar with Orthogonal Polarization–Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIOP-CALIPSO) aerosol retrievals towards assessing aerosols’ impact on the Earth-atmosphere radiation budget. A holistic approach has been adopted involving collocated Aerosol Robotic Network (AERONET) observations, Radiative Transfer Model (RTM) simulations, as well as reference radiation measurements acquired using spaceborne (Clouds and the Earth’s Radiant Energy System-CERES) and ground-based (Baseline Surface Radiation Network-BSRN) instruments. We are assessing the clear-sky shortwave (SW) direct radiative effects (DREs) on 550 atmospheric scenes, identified within the 2007–2020 period, in which the primary tropospheric aerosol species (dust, marine, polluted continental/smoke, elevated smoke, and clean continental) are probed using CALIPSO. RTM runs have been performed relying on CALIOP retrievals in which the default and the DeLiAn (Depolarization ratio, Lidar ratio, and Ångström exponent)-based aerosol-speciated LRs are considered. The simulated fields from both configurations are compared against those produced when AERONET AODs are applied. Overall, the DeLiAn LRs leads to better results mainly when mineral particles are either solely recorded or coexist with other aerosol species (e.g., sea-salt). In quantitative terms, the errors in DREs are reduced by ~26–27% at the surface (from 5.3 to 3.9 W/m²) and within the atmosphere (from −3.3 to −2.4 W/m²). The improvements become more significant (reaching up to ~35%) for moderate-to-high aerosol loads (AOD ≥ 0.2).

Anna Moustaka; Marios-Bruno Korras-Carraca; Kyriakoula Papachristopoulou; Michael Stamatis; Ilias Fountoulakis; Stelios Kazadzis; Emmanouil Proestakis; Vassilis Amiridis; Kleareti Tourpali; Thanasis Georgiou; Stavros Solomos; Christos Spyrou; Christos Zerefos; Antonis Gkikas. Assessing Lidar Ratio Impact on CALIPSO Retrievals Utilized for the Estimation of Aerosol SW Radiative Effects across North Africa, the Middle East, and Europe. Remote Sensing 2024, 16, 1689 .

Anna Moustaka, Marios-Bruno Korras-Carraca, Kyriakoula Papachristopoulou, Michael Stamatis, Ilias Fountoulakis, Stelios Kazadzis, Emmanouil Proestakis, Vassilis Amiridis, Kleareti Tourpali, Thanasis Georgiou, Stavros Solomos, Christos Spyrou, Christos Zerefos, Antonis Gkikas. Assessing Lidar Ratio Impact on CALIPSO Retrievals Utilized for the Estimation of Aerosol SW Radiative Effects across North Africa, the Middle East, and Europe. Remote Sensing. 2024; 16 (10):1689.

Anna Moustaka; Marios-Bruno Korras-Carraca; Kyriakoula Papachristopoulou; Michael Stamatis; Ilias Fountoulakis; Stelios Kazadzis; Emmanouil Proestakis; Vassilis Amiridis; Kleareti Tourpali; Thanasis Georgiou; Stavros Solomos; Christos Spyrou; Christos Zerefos; Antonis Gkikas. 2024. "Assessing Lidar Ratio Impact on CALIPSO Retrievals Utilized for the Estimation of Aerosol SW Radiative Effects across North Africa, the Middle East, and Europe." Remote Sensing 16, no. 10: 1689.