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  • Active Projects - POSEIDON
    Wave Europe Mediterranean Current Weather Satellite Images Surface Observations Airport Observations Active Projects MOONGOOS NORWAY IRPWIND MedSea BlackSea Finished Projects Archive POSEIDON Upgrade of the weather forecasting system of POSEIDON II for HCMR Installation and operation of SKIRON system Funded by EFTA and the Greek Government more details Copyright 1995 2012 Atmospheric Modeling Weather Forecasting Group The user assumes the entire risk related to its use of this data AM

    Original URL path: http://forecast.uoa.gr/proj_poseidon.php (2016-02-13)
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  • These models will be operated in both at HNMS and University of Athens premises The AM WFG will act complementarily as the backup site of the HNMS Some of the model products providing to HNMS are also available from this web site The financial support for this effort was from the Ministry of Culture General Secretarial for the Olympic Games and the ATHENS 2004 Organizing Committee through the tri lateral

    Original URL path: http://forecast.uoa.gr/2004/support04.html (2016-02-13)
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  • Atmospheric Modeling & Weather Forecasting Group
    AERO is to better understand the formation accumulation fate and effects of ozone other photochemical oxidants and fine particulate matter on the subgrid local scale in the Mediterranean area The project has been broken out into the following tasks Field Measurements an intensive measurement program during both winter and summer periods in 2 selected areas in the Mediterranean region Analysis of Field Measurements construction of a database from the data

    Original URL path: http://forecast.uoa.gr/subaero/index.html (2016-02-13)
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  • PowerPoint Presentation
    path html

    Original URL path: http://forecast.uoa.gr/nhreas/Nireas.htm (2016-02-13)
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  • Atmospheric Modeling & Weather Forecasting Group
    chlorinated hydrocarbons when carried into the sea by atmosphere are potentially harmful to marine biological systems Others such as nitrogen species phosphorus and iron are nutrients and may enhance marine producitivity Atmospheric inputs thus exert many different effects on the Mediterranean environment The ADIOS project aims at understanding the magnitude timing and geographical distribution of atmospheric deposition and impact of selected pollutants key elements and nutrients on the Mediterranean open

    Original URL path: http://forecast.uoa.gr/adios/index.html (2016-02-13)
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  • MEDITERRANEAN ATMOSPHERIC MERCURY CYCLE SYSTEM
    the project Moreover it treated physico chemical processes atmospheric reactions transformations removal processes and especially the aqueous phase chemistry and gas to solid partitioning of elemental mercury Four different scenarios of mercury transport and dispersion one for each season have been analysed at the framework of the MAMCS project Model simulations using RAMS and SKIRON Eta were performed The main results of this study are presented below The Mediterranean Sea region is not only affected by mercury released in its vicinity but also from air masses enriched in mercury from stations in northern and northeastern Europe This suggests that local and remote emissions must be taken into account in mercury studies in the Mediterranean This is particularly important for elemental mercury which can be transported in long ranges before deposition In general a satisfactory agreement is evident between observations and model output However a systematic model evaluation is difficult unless some other controlling factors like emission inventories and observation quality are not improved significantly Higher values of mercury concentration over the Mediterranean Sea Region were usually observed during the summer period This is attributed to the synoptic conditions prevailing during the warm period of the year The dominant flow is from north to south during summer promoting the transfer of pollutants from Europe to the Mediterranean region Moreover the summer period in the Mediterranean is characterised by anticyclonic circulations which are known to be associated with large scale subsidence and no rain Therefore the lower troposphere is usually stably stratified and consequently wet and dry deposition processes are suppressed The synoptic conditions prevailing during winter lead to higher concentrations of mercury over northern Europe than over the Mediterranean sea basin due to the dominance of quick removal processes over Europe The annual wet deposition values of particulate and reactive mercury Hg P and Hg 2 were one order of magnitude higher than the dry ones The annual dry and wet deposition amounts of elemental mercury adsorbed are comparable Also they are about 4 orders of magnitude smaller than those of Hg 2 and Hg P The deposition patterns showed that the largest amounts of mercury are deposited in eastern Europe and in the Mediterranean region especially in its eastern part Taking into account that the vast majority of the mercury sources is located over central and northwest Europe two main paths of transport are indicated The one path is from central to eastern Europe and the other is from Europe towards the Mediterranean sea namely from north to south This may have important negative implications not only for the fish and agricultural production of the nearby countries but also for the population directly exposed to mercury The difficulties in measuring the wet and dry deposition of mercury make the deposition patterns estimated by the model very useful The models are also helpful in estimating the mercury concentration due to the lack of reliable and consistent measuring methods A well developed numerical model is also much cheaper than a dense observation

    Original URL path: http://forecast.uoa.gr/mamcs/mamcs.htm (2016-02-13)
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  • a scale New measurements from airborne and spaceborne platforms will be utilized in order to allow cloud sampling on large horizontal scales The objective of this work is to prepare such developments by testing new observational remote sensing methods combining lidar and radar systems To test different procedures involving several wavelengths polarization lidar fields of view and multi beam analysis and ground based versus airborne observations for the retrieval of the cloud parameters As a first step procedures will be tested by using ground based measurements and in situ cloud sampling for warm clouds In a second step airborne lidar and radar system will be involved Model simulations will be performed in order to analyze the impact of the cloud parameterization on the radiation and dynamics at the mesoscale The simulated fields and microphysical processes will be used also to provide a feedback on the measuring systems and especially the prototype ones e g new radars at 96 GHZ LIDAR PROJECT METHODOLOGY During the project a cloud Radar with polarization diversity to discriminate water and ice phases and Doppler capabilities and two backscattering Lidar with polarization diversity will be operated from the same site and airborne platform The target of the measurements is high middle and low level clouds The main objective is to retrieve the effective radius and the water content of such clouds To do so it is aimed at deriving the second and third moment of the cloud droplet distribution from lidar and radar signal analysis and to correct for diffraction and multiple scattering Model calculations will be performed to analyze the impact of the retrieval and related errors and check the quality of retrieved cloud parameters and their representativeness with reference to radiation budget parameters measured at the same time The atmospheric model will be used to perform multi scale simulations with a state of the art cloud microphysical parameterization module activated Two way interactive nesting capabilities of the model will be used in order to cover a regional scale area and simultaneously to obtain very high resolution over the experimental location Two experimental campaigns have been organized so far and a third is under way The main task of the Atmospheric Modeling and Weather Forecasting Group of the University of Athens NKUA AM WFG is to perform the appropriate model development and simulations with RAMS and inter compare the results with the observations from the experimental radar and lidar platforms 1 st experimental campaign Location Geestacht Date 6 December 1995 Period of observations 8 minutes from 16 06 UTC to 16 14 UTC Instruments The GKSS 95 GHz cloud Radar click here 2 nd experimental campaign Location Palaiseau near Paris Period of observations 26 April to 15 May 1999 Instruments For ground based measurements 5 5 GHz Radar IPSL 95 GHz Radar GKSS Lidar 0 53 and 10 6 m m IPSL Lidar ceilometer 0 9 m m KNMI visible and infrared radiometers KNMI IPSL For airborne measurements FSSP 2DC 2DP sondes GKSS Visible and

    Original URL path: http://forecast.uoa.gr/carl/introduction1.htm (2016-02-13)
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  • PROJECT SUMMARY
    and the minimum damage conservation of nature and resources the project improves the employment opportunities and the quality of life in the countryside and thus reversing the urbanization trends of rural populations Scientific objectives and approach The objective of AUTO HAZARD PRO is to integrate real time and on line fire and flood hazard management schemes into a GIS type platform The system will be run on an operational mode in Disasters Management Centers and in connection with local resource management agencies across hazard prone EU areas Specific tasks will be to develop i an environmental and technological Data Base Management System with electronic information i e fire occurrence topography soils weather vegetation land use administrative and technical resources and digital mapping capabilities for natural hazards fire protection and effects mitigation and environmental impact assessment ii a Decision Support System dealing with proactive planning and emergency management of real time fire episodes including fuels management socio economic criteria a priori risk forecasting automatic fire detection and optimal resource dispatching Collection input storage management and analysis of the information depends on advanced and automated methodologies using remote sensing GPS digital mapping and GIS Development of the prototype system will be accomplished on 3 study areas in Greece and Spain with the potential to later encompass whole regions of EU countries on operational basis Expected impacts The system will be supported by an operational weather forecasting system that will supply regular 72 hour weather forecasts and in addition down scaled forecasts in the areas of interest Field sensors of autonomous fire detection will be linked to the operation s center within AUTO HAZARD PRO where the alarm signal will be evaluated to stimulate proper responses Short term dynamic fire and flood danger indices will be developed for better and realistic prevention and

    Original URL path: http://forecast.uoa.gr/autohazard.html (2016-02-13)
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