A climatic investigation of precipitation amount associated with 500-hpa cyclones which are affecting the Greek territory during warm period of the year

Pages:

p. 367

University of Thessaly, Dep. of Agriculture Crop Production and Rural Environment, Fytoko Str. Volos 38446 Greece

University of Thessaly Dep. of Civil Engineering Pedion Areos Volos 38334 Greece

Abstract:

An objective analysis of 500-hPa cyclones (500-hPa lows) is performed during the warm period (15 Apr-15 Oct) of the year for central and east Mediterranean regions. Α 40- year (1958-1997) data basis of geopotential height values with a detailed (2.5°X2.5°) spatial and temporal (00, 06, 12, 18 UTC) resolution is used in the study. Lows are determined as local minima in each 3X3 matrix of geopotential height values for every grid point in the area of study. A gradient criterion between the central point and the surroundings is additionally applied to exclude weak lows, which probably originate from the assimilation procedure. A sub-area which consists of 36 grid points and includes the Greek peninsula is selected for the investigation of relationship between cyclone occurrence and precipitation amount. Cyclone occurrence is classified in nine groups consisting of four (4) grid points each. During the domination of these cyclones, daily precipitation amounts where determined from precipitation data collected at a 20-station network, which was operational during the same time period. In cases of multiple cyclone occurrences per day, the location of the deepest cyclone was selected. The spatial distribution of average precipitation amount in each of the nine cyclone groups is plotted and discussed. The comparison of these nine distributions revealed three major factors affecting the location of frequency maxima and minima. The first is low-level instability, the second is orography and the third is positive vorticity advection associated with 500-hPa cyclones.

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A climatic investigation of precipitation amount associated with 500-hpa cyclones which are affecting the Greek territory during warm period of the year

VOLUME 39 (1-2)/September 2010 XIX Congress of the Carpathian-Balkan Geological Association Thessaloniki, Greece, 23-26 September 2010

Maria Economou-EliopoulosDepartment of Geology and Geoenvironment, University of Athens, Panepistimiopolis, 15784 Athens GR

Ioan SeghediInstitute of Geodynamics, 19-21, Jean-Luis Calderon str., Bucharest 020032, Romania

Gérard StampfliInstitut de Géologie et Paléontologie, Université de Lausanne – Anthropole, CH 1015 Lausannne, Switzerland

Alexandru AndrasanuDepartment of Geology and Palaeontology, Faculty of Geology and Geophysics, University of Bucharest, 1 Nicolae Balcescu Bd., sect.1, Bucharest, Romania

Ion ArgyriadisCERGEM (Euro mediterranean geological Studies and Research Center). 975 ch. du Pré de Caune, 83740 La Cadière d'Azur, France

Kürşad AsanDepartment of Geological Engineering, Selçuk University, Konya, 42079, Türkiye | Hüseyin KurtDepartment of Geological Engineering, Selçuk University, Konya, 42079, Türkiye

Argyro AsvestaDepartment of Geotechnology and Environmental Engineering, Technological Educational Institute (TEI) of West Macedonia, Kila, 50100 Kozani, Greece | Sarantis DimitriadisSchool of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Athanassios AthanassiouHellenic Ministry of Culture, Department of Palaeoanthropology–Speleology, Ardittou 34B, 116 36 Athens, Greece | Dimitris BouzasHellenic Ministry of Culture, Department of Palaeoanthropology–Speleology, Ardittou 34B, 116 36 Athens, Greece

Athanassios AthanassiouMinistry of Culture, Ephorate of Palaeoanthropology–Speleology, Ardittou 34B, 116 36 Athens, Greece | Dimitris KostopoulosUniversity of Thessaloniki, Department of Geology, 54124 Thessaloniki, Greece

Artemios AtzemoglouInstitute of Geology and Mineral Exploration, 54626 Thessaloniki, Greece, | Panagiotis TsourlosDepartment of Geophysics, school of Geology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece,

Krisztina BabákDepartment of General and Applied Environmental Geography, Institute of Geography, University of Pécs, 7624, Pécs, Ifjúság útja 6., Hungary

Vassil BalinovUniversity of Mining and Geology, Stoudentski grad, 1700 Sofia, Bulgaria | Mariana DonchevaUniversity of Mining and Geology, Stoudentski grad, 1700 Sofia, Bulgaria | Efrosima Zaneva-DobranovaUniversity of Mining and Geology, Stoudentski grad, 1700 Sofia, Bulgaria

Alexey BaranovInstitute of Physics of the Earth, 123995, Moscow, Russia, B. Gruzinskaya 10 | Valeriy TrubitsynInstitute of Physics of the Earth, 123995, Moscow, Russia, B. Gruzinskaya 10 | Alexander TrubitsynInstitute of Physics of the Earth, 123995, Moscow, Russia, B. Gruzinskaya 10

Mehrdad BaratiDepartment of Geology, Faculty of Science, Bu-Ali Sina University, 65174, Hamedan, Iran | Insung LeeSeoul National University, Korea

Anikó BatkiDepartment of Mineralogy, Geochemistry and Petrology, University of Szeged, H-6701, POBox 651., Szeged, Hungary | Elemér Pál-MolnárDepartment of Mineralogy, Geochemistry and Petrology, University of Szeged, H-6701, POBox 651., Szeged, Hungary

Peter BaumgartnerInstitut de Géologie et Paléontologie, Université de Lausanne, 1015 Lausanne, Switzerland | Špela GoričanInstitute of Paleontology, ZRC SAZU, Novi trg 2, SI-1000 Ljubljana, Slovenia | Marko ChiariCNR - Istituto di Geoscienze e Georisorse, Via G. La Pira 4, 50121 Firenze, Italy

Ali BayramDepartment of Geology Engineering, Engineering and Architecture Faculty, Selcuk University, 42079, Konya, Turkey

Lucian BesutiuSolid Earth Dynamics Department, Institute of Geodynamics of the Romanian Academy, 19-21, Jean-Louis Calderon St., 020032 Bucharest

Gabriel BindeaGeological Institute of Romania, Caransebes str. 1, 012271 Bucharest, Romania

Julita Biszczuk-JakubowskaCentre of Aerology, Institute of Meteorology and Water Management, Zegrzynska 38, 05-119 Legionowo, Poland

Jennifer BoothSchool of Geography and the Environment, OUCE, South Parks Road, Oxford, OX1 3QY, United Kingdom

Nikola BotoucharovDepartment of Geology, Paleontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 1504, Sofia, Bulgaria | Hristo Chemberski

Nikita BraginGeological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia | Liubov BraginaGeological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia

Liubov BraginaGeological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia | Nikita BraginGeological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia

Aynur BüyükutkuDepartment of Geological Engineering, Faculty of Engineering, Ankara University, 06100, Beşevler, Ankara, Turkey

Nicoleta CadicheanuInstitute of Geodynamics of the Romanian Academy, 19-21, Jean-Louis Calderon St., Bucharest-37, 020032, Romania | Michel van RuymbekeRoyal Observatory of Belgium, ORB-avenue circulaire 3, 1180, Bruxelles, Belgium

William CavazzaDept. of Earth and Geoenvironmental Sciences, University of Bologna, Italy | Aral OkayEurasia Institute of Earth Sciences and Dept. of Geology, Istanbul Technical University, Turkey | Massimiliano ZattinDept. of Geosciences, University of Padua, Italy

Aura CehlarofGeology-Geophysics Department, Petroleum-Gas University of Ploiesti, 100680, Ploiesti, Romania

Yakup ÇelikIstanbul University, Department of Geological Engineering, Avcılar, TR-34320 İstanbul, Turkey

Valentina CeteanProcema Geologi S.R.L., Preciziei street, No.6, RO-062203 Bucharest, Romania | Laszlo SzéllProcema Cercetare S.R.L., Cluj-Napoca, Beiusului street, No. 1, RO-400394 Cluj county, Romania | Neculai CiorneiProcema Geologi S.R.L., Preciziei street, No.6, RO-062203 Bucharest, Romania

Maria ChatziangelouDepartment of Geology, School of Geology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece | Basile ChristarasDepartment of Geology, School of Geology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

Maria Economou-Eliopoulos
Department of Geology and Geoenvironment, University of Athens, Panepistimiopolis, 15784 Athens GR

Ioan Seghedi
Institute of Geodynamics, 19-21, Jean-Luis Calderon str., Bucharest 020032, Romania

Gérard Stampfli
Institut de Géologie et Paléontologie, Université de Lausanne – Anthropole, CH 1015 Lausannne, Switzerland

Alexandru Andrasanu
Department of Geology and Palaeontology, Faculty of Geology and Geophysics, University of Bucharest, 1 Nicolae Balcescu Bd., sect.1, Bucharest, Romania

Ion Argyriadis
CERGEM (Euro mediterranean geological Studies and Research Center). 975 ch. du Pré de Caune, 83740 La Cadière d'Azur, France

Kürşad Asan
Department of Geological Engineering, Selçuk University, Konya, 42079, Türkiye

|

Hüseyin Kurt
Department of Geological Engineering, Selçuk University, Konya, 42079, Türkiye

Argyro Asvesta
Department of Geotechnology and Environmental Engineering, Technological Educational Institute (TEI) of West Macedonia, Kila, 50100 Kozani, Greece

|

Sarantis Dimitriadis
School of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Athanassios Athanassiou
Hellenic Ministry of Culture, Department of Palaeoanthropology–Speleology, Ardittou 34B, 116 36 Athens, Greece

|

Dimitris Bouzas
Hellenic Ministry of Culture, Department of Palaeoanthropology–Speleology, Ardittou 34B, 116 36 Athens, Greece

Athanassios Athanassiou
Ministry of Culture, Ephorate of Palaeoanthropology–Speleology, Ardittou 34B, 116 36 Athens, Greece

|

Dimitris Kostopoulos
University of Thessaloniki, Department of Geology, 54124 Thessaloniki, Greece

Artemios Atzemoglou
Institute of Geology and Mineral Exploration, 54626 Thessaloniki, Greece,

|

Panagiotis Tsourlos
Department of Geophysics, school of Geology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece,

Krisztina Babák
Department of General and Applied Environmental Geography, Institute of Geography, University of Pécs, 7624, Pécs, Ifjúság útja 6., Hungary

Vassil Balinov
University of Mining and Geology, Stoudentski grad, 1700 Sofia, Bulgaria

|

Mariana Doncheva
University of Mining and Geology, Stoudentski grad, 1700 Sofia, Bulgaria

|

Efrosima Zaneva-Dobranova
University of Mining and Geology, Stoudentski grad, 1700 Sofia, Bulgaria

Alexey Baranov
Institute of Physics of the Earth, 123995, Moscow, Russia, B. Gruzinskaya 10

|

Valeriy Trubitsyn
Institute of Physics of the Earth, 123995, Moscow, Russia, B. Gruzinskaya 10

|

Alexander Trubitsyn
Institute of Physics of the Earth, 123995, Moscow, Russia, B. Gruzinskaya 10

Mehrdad Barati
Department of Geology, Faculty of Science, Bu-Ali Sina University, 65174, Hamedan, Iran

|

Insung Lee
Seoul National University, Korea

Anikó Batki
Department of Mineralogy, Geochemistry and Petrology, University of Szeged, H-6701, POBox 651., Szeged, Hungary

|

Elemér Pál-Molnár
Department of Mineralogy, Geochemistry and Petrology, University of Szeged, H-6701, POBox 651., Szeged, Hungary

Ali Bayram
Department of Geology Engineering, Engineering and Architecture Faculty, Selcuk University, 42079, Konya, Turkey

Lucian Besutiu
Solid Earth Dynamics Department, Institute of Geodynamics of the Romanian Academy, 19-21, Jean-Louis Calderon St., 020032 Bucharest

Gabriel Bindea
Geological Institute of Romania, Caransebes str. 1, 012271 Bucharest, Romania

Julita Biszczuk-Jakubowska
Centre of Aerology, Institute of Meteorology and Water Management, Zegrzynska 38, 05-119 Legionowo, Poland

Jennifer Booth
School of Geography and the Environment, OUCE, South Parks Road, Oxford, OX1 3QY, United Kingdom

Nikola Botoucharov
Department of Geology, Paleontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 1504, Sofia, Bulgaria

|

Hristo Chemberski

Nikita Bragin
Geological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia

|

Liubov Bragina
Geological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia

Liubov Bragina
Geological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia

|

Nikita Bragin
Geological Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia

Aynur Büyükutku
Department of Geological Engineering, Faculty of Engineering, Ankara University, 06100, Beşevler, Ankara, Turkey

Nicoleta Cadicheanu
Institute of Geodynamics of the Romanian Academy, 19-21, Jean-Louis Calderon St., Bucharest-37, 020032, Romania

|

Michel van Ruymbeke
Royal Observatory of Belgium, ORB-avenue circulaire 3, 1180, Bruxelles, Belgium

William Cavazza
Dept. of Earth and Geoenvironmental Sciences, University of Bologna, Italy

|

Aral Okay
Eurasia Institute of Earth Sciences and Dept. of Geology, Istanbul Technical University, Turkey

|

Massimiliano Zattin
Dept. of Geosciences, University of Padua, Italy

Aura Cehlarof
Geology-Geophysics Department, Petroleum-Gas University of Ploiesti, 100680, Ploiesti, Romania

Yakup Çelik
Istanbul University, Department of Geological Engineering, Avcılar, TR-34320 İstanbul, Turkey

Maria Chatziangelou
Department of Geology, School of Geology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

|

Basile Christaras
Department of Geology, School of Geology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece