Anastasios Papadopoulos

Anastasios Papadopoulos
Hellenic Centre for Marine Research | hcmr · Institute of Marine Biological Resources and Inland Waters

PhD in Environmental Physics and Dynamic Meteorology

About

167
Publications
44,301
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2,915
Citations
Additional affiliations
February 1999 - present
Hellenic Centre for Marine Research
Position
  • Senior Researcher

Publications

Publications (167)
Article
Full-text available
A sophisticated downscaling procedure that was applied to reproduce high resolution historical records of the atmospheric conditions across the Mediterranean region is presented in this paper. This was accomplished by the dynamical downscaling of the European Center for Medium-Range Forecasts ERA-40 reanalyses with the aid of the atmospheric model...
Article
A weather forecasting system has been developed in the framework of the POSEIDON project "Monitoring, forecasting and information system for the Greeks seas". The system is currently running operationally at the National Centre for Marine Research (NCMR) providing detailed and accurate weather forecasts. It also forces a general circulation ocean m...
Article
Full-text available
An integrated modeling system has been developed to accurately describe the dust cycle in the atmosphere. It is based on the SKIRON/Eta modeling system and the Eta/NCEP regional atmospheric model. The dust modules of the entire system incorporate the state of the art parameterizations of all the major phases of the atmospheric dust life such as pro...
Article
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A technique developed for assimilating regional lightning measurements into a meteorological model is presented in this paper. The goal is to assess the effectiveness of cloud-to-ground (CG) lightning informa- tion for improving the convective precipitation forecasting. The main concept of the technique is that utilizing real-time location, timing,...
Article
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The POSEIDON weather forecasting system became operational at the Hellenic Centre for Marine Research (HCMR) in October 1999. The system with its nesting capability provided 72-h forecasts in two different model domains, i.e. 25- and 10-km grid spacing. The lower-resolution domain covered an extended area that included most of Europe, Mediterranean...
Article
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Water quality indices (WQIs) are efficient tools, globally used for the determination of the quality status of water bodies. In Greece, for almost a decade, the physicochemical quality of water in rivers has been determined by a rigorous, biologically-based, national classification system, developed by the Hellenic Centre for Marine Research (HCMR)...
Article
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The quantitative and qualitative status of a riverine ecosystem is mainly controlled by the characteristics of the catchment (topography, land use, and geological structure) and climatic factors (precipitation and temperature), both of which can be affected by anthropogenic activities. To quantify the impact of humanly imposed pressures on river di...
Article
Lakes are particularly vulnerable ecosystems to global warming. Surface temperature of most lakes in the world has significantly increased. Here, we analysed time-series of water temperature, mixing-depth, and ice depth of 51 European lakes over the last four decades. We used data of surface temperature, total layer water temperature, mix-layer tem...
Article
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Flash floods, among the most destructive natural hazards, are commonly studied as to their catastrophic power in terms of fatalities, infrastructure damages and economic losses. A devastating aftermath of flash floods, which has not received its much‐deserved attention in literature, is the sizeable and permanent soil loss due to soil erosion and s...
Article
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Precipitation is one of the most variable climatic parameters, as it is determined by many physical processes. The spatiotemporal characteristics of precipitation have been significantly affected by climate change during the past decades. Analysis of precipitation trends is challenging, especially in regions such as Greece, which is characterized b...
Chapter
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This chapter presents an integrated platform to simulate and predict flash floods. The platform consists of various state-of-the-art components, including remote sensing data assimilation and advanced atmospheric and hydrological models. The Local Analysis and Prediction System (LAPS) and the Chemical Hydrological Atmospheric Ocean wave System (CHA...
Article
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The large-scale surface-water monitoring infrastructure for Greece Open Hydrosystem Information Network (Openhi.net) is presented in this paper. Openhi.net provides free access to water data, incorporating existing networks that manage their own databases. In its pilot phase, Openhi.net operates three telemetric networks for monitoring the quantity...
Article
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Climate change is known to affect world’s lakes in many ways. Lake warming is perhaps the most prominent impact of climate change but there is evidence that changes of precipitation and wind speed over the surface of the lakes may also have a significant effect on key limnological processes. With this study we explored the interannual trends of sur...
Article
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A hydrometeorological forecasting system has been operating at the Institute of Marine Biological Resources and Inland Waters (IMBRIW) of the Hellenic Centre for Marine Research (HCMR) since September 2015. The system consists of the Advanced Weather Research and Forecasting (WRF-ARW) model, the WRF-Hydro hydrological model, and the HEC-RAS hydraul...
Article
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The monitoring of the water stage in streams and rivers is essential for the sustainable management of water resources, particularly for the estimation of river discharges, the protection against floods and the design of hydraulic works. The Institute of Marine Biological Resources and Inland Waters of the Hellenic Centre for Marine Research (HCMR)...
Article
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Water resources, especially riverine ecosystems, are globally under qualitative and quantitative degradation due to human-imposed pressures. High-temporal-resolution data obtained from automatic stations can provide insights into the processes that link catchment hydrology and streamwater chemistry. The scope of this paper was to investigate the st...
Conference Paper
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Good water quality status in rivers and lakes is vital for both human well-being and biodiversity conservation and requires efficient monitoring and restoration strategies. This is reflected in an increasing number of International and National legislations which enforce water resources management and monitoring at a basin scale. For this purpose,...
Article
A common source of uncertainty in flood inundation forecasting is the hydrograph used. Given the role of sea‐air‐hydro‐land chain processes on the water cycle, flood hydrographs in coastal areas can be indirectly affected by sea state. This study investigates sea‐state effects on precipitation, discharge, and flood inundation forecasting implementi...
Article
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Nature-Based Solutions (NBS) are being deployed around the world in order to address hydro-meteorological hazards, including flooding, droughts, landslides and many others. The term refers to techniques inspired, supported and copied from nature, avoiding large constructions and other harmful interventions. In this work the development and evaluati...
Article
Understanding the climatic drivers of eutrophication is critical for lake management under the prism of the global change. Yet the complex interplay between climatic variables and lake processes makes prediction of phytoplankton biomass a rather difficult task. Quantifying the relative influence of climate-related variables on the regulation of phy...
Article
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The monitoring of surface waters is of fundamental importance for their preservation under good quantitative and qualitative conditions, as it can facilitate the understanding of the actual status of water and indicate suitable management actions. Taking advantage of the experience gained from the coordination of the national water monitoring progr...
Article
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Atmospheric-chemical coupled models usually parameterize sea-salt aerosol (SSA) emissions using whitecap fraction estimated considering only wind speed and ignoring sea state. This approach may introduce inaccuracies in SSA simulation. This study aims to assess the impact of sea state on SSA modeling, applying a new parameterization for whitecap fr...
Article
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In this study, the performance and characteristics of the advanced cloud nucleation scheme of Fountoukis and Nenes, embedded in the fully coupled Weather Research and Forecasting/Chemistry (WRF/Chem) model, are investigated. Furthermore, the impact of dust particles on the distribution of the cloud condensation nuclei (CCN) and the way they modify...
Chapter
The meteorological conditions over the Aegean Sea are subjected to strong influences from the large-scale patterns of the general atmospheric circulation, the surrounding continents, the almost enclosed Mediterranean Sea, the complex topography and coastline, as well as the mesoscale and local phenomena imposed on the synoptic-scale atmospheric cir...
Article
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Severe hydrometeorological hazards such as floods, droughts, and thunderstorms are expected to increase in the future due to climate change. Due to the significant impacts of these phenomena, it is essential to develop new and advanced early warning systems for advance preparation of the population and local authorities (civil protection, governmen...
Chapter
Spercheios River Basin and the adjacent Maliakos Gulf system (the Aegean Sea) in Central Greece is being examined under a holistic approach that perceives river basins and coastal marine areas as an integrated unit. The main scope is the better understanding of the impacts of the anthropogenic interventions and climate change to the ecological feat...
Article
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Understanding the governing mechanisms of atmosphere-wave-ocean interactions is critical for unraveling the formation and evolution mechanisms of severe weather phenomena. This study aims at investigating the effects of atmosphere-wave-ocean feedbacks on a Mediterranean tropical-like cyclone (medicane), occurred on 27–30 September 2018 at the centr...
Article
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It is currently clear that the atmosphere and ocean should be simulated by integrated modelling systems resolving interconnected physical factors that determine the Earth’s energy balance. Waves play a key role in the interfacial interaction between the atmosphere and the ocean, regulating momentum, heat and moisture exchange. This study aims to ev...
Article
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Nowadays, as extreme weather increasingly threatens human health and economy, early warning system approaches are critical for timely preparedness and response. Towards the implementation of a multi-model forecasting system for flood hazards, this study presents a coupled application of three (3) models: The WRF-ARW weather model, the WRF-Hydro hyd...
Article
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In this study, the physically-based hydrological model MIKE SHE was employed to investigate the effects of anthropogenic land cover changes to the hydrological cycle components of a regional watershed in Central Greece. Three case studies based on the land cover of the years 1960, 1990, and 2018 were examined. Copernicus Climate Change Service E-OB...
Article
Full-text available
The forecast skill of numerical weather prediction (NWP) models relies, among other factors such as the prediction itself and the assimilation scheme, on the accuracy of the observations utilized in the assimilation systems for the production of initial and boundary conditions. One of the most crucial parameters in weather forecasting is the sea su...
Article
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Hurricane Sandy affected the Caribbean Islands and the Northeastern United States in October 2012 and caused 233 fatalities, severe rainfalls, floods, electricity blackouts and 75 billion U.S. dollars in damages. In this study, the synoptic and dynamical characteristics that led to the formation of the hurricane are investigated. The system was dri...
Article
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Urban areas often experience high precipitation rates and heights associated with flash flood events. Atmospheric and hydrological models in combination with remote-sensing and surface observations are used to analyze these phenomena. This study aims to conduct a hydrometeorological analysis of a flash flood event that took place in the sub-urban a...
Article
One of the most understudied and less understood phenomenon in air-sea interaction studies is the effect of rain on the sea state and in turn the atmosphere’s response to this surface forcing. In order to examine the entire process, a new parameterization scheme for rain-induced sea surface roughness was incorporated in the two-way atmosphere-ocean...
Poster
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The Atmosphere and Climate Dynamics Group (ACDG) of the Department of Geography at Harokopio University of Athens produces seasonal weather forecasts in operational basis since 2014 (CHAOS system, Varlas et al. 2018). Seasonal forecasting products are generated twice a year, cover entire globe and are freely available through the web site http://me...
Article
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The principal objective of this study is to present and evaluate an advanced dust wet deposition scheme in the Weather and Research Forecasting model coupled with Chemistry (WRF-Chem). As far as the chemistry component is concerned, the Georgia Tech Goddard Global Ozone Chemistry Aerosol Radiation and Transport of the Air Force Weather Agency (GOCA...
Data
13 Scientists under the auspices of a local Environmental NGO "Sustainable Samothraki" provide an position statement on potential impacts from the proposed construction of wind turbine developments in the mountains of Samothraki Island, Greece. The proposed developments are within a Natura 2000 area (SAC, SPA) and a proposed UNESCO Man and Biospher...
Presentation
Full-text available
A call for applications to the Summer School on the Greek Island of Samothraki: 3rd to 12th June 2018. DEADLINE FOR APPLICATIONS NOW SET AT 15 FEBRUARY. This course primarily addresses students with some post-graduate research experience (Master’s Degree level or in course for post-graduate work) from both the natural and social sciences. Student...
Article
The Samaria and Lithinon canyons at the southern Cretan margin (Eastern Mediterranean) were studied with respect to hydrography, deep currents, particle dynamics and settling fluxes by utilizing: (a) current-meter and sediment trap records from May 2005 to May 2006; and (b) hydrographic and optical measurements along with particulate matter and par...
Conference Paper
The scarcity of oceanic observations of the air-sea interaction together with the oceanic processes (coastal, open, deep ocean) in the proper spatial and temporal scales under long-term recording schemes is one of the challenges that a European Ocean Observing System should meet. This is mainly due to the complexity of the marine environment in con...
Article
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Abstract Marine Renewable Energy (MRE) resources such as wind and wave energy depend on the complex behaviour of weather and climatic conditions which determine the development of MRE technologies, energy grid, supply and prices. This study investigates the spatiotemporal variability of MRE resources along the Norwegian coast employing NORA10 (NOrw...
Article
It is generally accepted that the fluid layer surrounding Earth should be considered as a single system at short and longer spatiotemporal scales. The current knowledge on the complex mechanisms of atmosphere-ocean interactions is still insufficient. This translates to the simulation of atmosphere and ocean as a single fully coupled system construc...
Article
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This volume contains the main results of the EC FP7 “The Ocean of Tomorrow” Project CoCoNet, divided in two sections: 1) a set of guidelines to design networks of Marine Protected Areas in the Mediterranean and the Black Seas; 2) a smart wind chart that will allow evaluating the possibility of installing Offshore Wind Farms in both seas. The concep...
Poster
Full-text available
Renewable Energy (RE) resources such as hydropower, wind, wave power and solar energy are strongly depending on the chaotic behavior of the weather conditions and climate. Due to this dependency, the prediction of the spatiotemporal variability of the RE resources is important. The fluctuation of the RE resources can affect the development of the R...
Poster
Full-text available
Preliminary results indicate that the coupled system was mainly able to resolve the rain-ocean wave interaction mechanisms, improve the simulation of wave formation and decrease of the simulation errors. The feedbacks have systematic effects on the momentum fluxes and the sea surface roughness by modifying the characteristics of the atmospheric bou...
Poster
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In this study, a fully coupled atmospheric-hydrologic modeling system, WRF-Hydro, is used to study the interaction between the atmosphere and the hydro-logic environment as a unified system.
Article
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In this study long-term wind data obtained from high-resolution hindcast simulations is used to analytically assess offshore wind power potential in the Aegean and Ionian Seas and provide wind climate and wind power potential characteristics at selected locations, where offshore wind farms are at the concept/planning phase. After ensuring the good...
Chapter
The fully coupled Weather Research and Forecasting/Chemistry (WRF/Chem) model includes various schemes for the simulation of the atmospheric chemistry. The air quality component of the model is fully consistent with the meteorological component; both components use the same transport scheme (mass and scalar preserving), the same grid (horizontal an...
Chapter
The two-way fully coupled atmosphere-ocean wave system WEW has been recently developed for studying the factors that contribute to the air-sea interaction processes and feedbacks. The new developed wind-wave parameterization scheme reduces both the near surface wind speed and the significant wave height as a response to the increased aerodynamic dr...
Chapter
It is a common sense that there is no usable forecast skill at seasonal lead times due to the rapid drop-off of the predictability after a few days from the initialization of a simulation. However, there is some skill in predicting anomalies in the seasonal average of the weather such as anomalies of the persistent atmospheric patterns or even devi...
Technical Report
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Describes the development of a spatially-based fish-based index to assess ecological quality in lotic waters of the Sperchios Basin (Western Aegean Ecoregion).
Article
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The development of offshore wind farms (OWFs) and the establishment of marine protected areas (MPAs) comprise two main elements for the production of clean energy, and the simultaneous maintenance and protection of biodiversity in the Mediterranean and Black seas. Successful, efficient, and sustainable coupling of these two aspects presumes that th...
Article
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It is commonly accepted that there is a need for a better understanding of the factors that contribute to air–sea interactions and their feedbacks. In this context it is important to develop advanced numerical prediction systems that treat the atmosphere and the ocean as a unified system. The realistic description and understanding of the exchange...