Relationship between winter orographic precipitation with synoptic and large-scale atmospheric circulation: The case of mount Olympus, Greece

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Published: Oct 16, 2018
DOI: https://doi.org/10.12681/bgsg.14363
Keywords:
Winter rainfall atmospheric circulation North Atlantic Oscillation Arctic Oscillation orographic effect Mount Olympus
Michael Nikolaos Styllas
GEOSERVICE Ltd, Eirinis 15 Street, 55236, Thessaloniki, Greece
https://orcid.org/0000-0003-4385-0008
Dimitrios Kaskaoutis
Institute for Environmental Research and Sustainable Development, National Observatory of Athens, 11810 Athens, Greece
Abstract

The relationship between the winter (DJFM) precipitation and the atmospheric circulation patterns is examined around Mount Olympus, Greece in order to assess the effects of orography and atmospheric dynamics over a small (less than 100 x 100 km) spatial domain. Winter accumulated rainfall datasets from 8 stations spread along the eastern (marine) and western (continental) sides of the Mount Olympus at elevations between 30 m and 1150 m are used during the period 1981 to 2000. Synoptic scale conditions of mean sea-level pressure and geopotential heights at 850 hPa and 500 hPa, were used to explain the multiyear rainfall variability. High pressure systems dominated over the central Mediterranean and most parts of central Europe during the late 1980’s and early 1990’s, are associated with minimum winter rainfall along both sides of Mount Olympus. The winter of 1996 was associated with peak in rainfall along the marine side of the mountain and was characterized by enhancement of upper level trough over the western Mediterranean and increased low tropospheric depressions over the southern Adriatic and the Ionian Seas. This atmospheric circulation pattern facilitated a southeasterly air flow that affected more (less) the marine (continental) sides of the mountain. In contrast, dominance of low pressure systems with cores over the Gulf of Genoa and the Central Mediterranean affect the study area mostly from west/southwest revealing higher correlations with the precipitation in the continental side of the mountain (r= -0.80; Elassona station) and considerably lower correlations with the marine side (r = -0.67; Katerini station). This highlights the orographic barrier of the Mount Olympus revealing large differences between the upward and leeward sides. Large scale atmospheric patterns like the North Atlantic Oscillation and the Arctic Oscillation seem to influence the winter rainfall in the lowlands along the continental side of the mountain.

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  • Climatology
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References
Bartzokas A., Lolis C.J., Metaxas C.A., 2003. The 850mb relative vorticity centres of action for winter precipitation in the Greek area. Int. J. Climatol. 23: p.813 – 828.
Bou Karam D., Flamant C., Cuesta J., Pelon J., Williams E., 2010. Dust emission and transport associated with a Saharan depression: February 2007 case. J. Geophys. Res. 115, D00H27, doi:10.1029/2009JD012390
Campins J., Genoves A., Picornell M. A., Jansa, A., 2011. Climatology of Mediterranean cyclones using the ERA‐40 dataset. Int. J. Climatology, 31, 1596–1614.
Feidas H., Noulopoulou N., Makrogiannis T., Bora-Senta E., 2007. Trend analysis of precipitation time series in Greece and their relationship with circulation using surface and satellite data: 1955– 2001, Theor. Appl. Climatol., 87, 155–177, 2007.
Flocas H.A., Karakostas T.S., 1996. Cyclogenesis over the Aegean Sea: Identification and synoptic categories. Meteorol. Appl., 3, 53 – 61.
Flocas H.A., Simmonds A., Kouroutzoglou I., Keay K., Hatzaki M., Bricolas V., Asimakopoulos D.N., 2010. On Cyclonic Tracks over the Eastern Mediterranean. J. Climate, 23, 5243–5257.
Gkikas A., Houssos E.E., Lolis C.J., Bartzokas A., Mihalopoulos N., Hatzianastassiou N., 2014. Atmospheric circulation evolution related to desert-dust episodes over the Mediterranean. Q. J. R. Meteorol. Soc. 141, 1634–1645.
Houssos E.E., Lolis C.J., Bartzokas A., 2008. Atmospheric circulation patterns associated with extreme precipitation in Greece. Adv. Geosci., 17, 5–11.
Hurrell James & National Center for Atmospheric Research Staff (Eds). The Climate Data Guide: Hurrell North Atlantic Oscillation (NAO) Index (station-based). Retrieved from https://climatedataguide.ucar.edu/climate-data/hurrell-north-atlantic-oscillation-nao-index-station-based.
Kalnay E., and Co-authors, 1996. The NCEP/NCAR Reanalysis 40-year Project. Amer. Meteor. Soc., 77, 437–471.
Kaskaoutis D.G., Nastos P.T., Kosmopoulos P.G., Kambezidis H.D., 2012. Characterizing the long-range transport mechanisms of different aerosol types over Athens, Greece during 2000-2005. Intern. J. Climatology, 32, 1249-1270.
Kaskaoutis D.G., Houssos E.E., Goto D., Bartzokas A., Nastos P.T., Sinha P.R., Kharol S.K., Kosmopoulos P.G., Singh R.P., Takemura T., 2014. Synoptic weather conditions and aerosol episodes over Indo-Gangetic Plains, India. Climate Dynamics, 43, 2313-2331.
Kaskaoutis D.G., Rashki A., Houssos E.E., Mofidi A., Goto D., Bartzokas A., Francois P., Legrand M., 2015. Meteorological aspects associated with dust storms in the Sistan region, southeastern Iran. Climate Dynamics, 45, 407-424.
Kaskaoutis D.G., Houssos E.E., Solmon F., Legrand M., Rashki A., Dumka U.C., Francois P., Gautam R., Singh R.P., 2018. Impact of atmospheric circulation types on southwest Asian dust and Indian summer monsoon rainfall. Atmos. Research, 201, 189-205.
Krichak S.O., Alpert P., 2005. Signatures of the NAO in the atmospheric circulation during wet winter months over the Mediterranean region. Theor. Appl. Climatol. 82: 27–39.
Kutiel H., Maheras P., Guika S., 1996. Circulation indices over the Mediterranean and Europe and their relationship with rainfall conditions across the Mediterranean, Theor. Appl. Climatol. 54, 125-138.
Lionello P., Giorgi F., 2007. Winter precipitation and cyclones in the Mediterranean region: future climate scenarios in a regional simulation. Adv. Geosci. 12, 153–158.
Maheras P., 1982. Climatologie de la Mer Egee et de ces marges continentals. Etude de climatologie descriptive et de climatologie dynamique. These d’Etat, Atelier de Reproduction de Theses de Lille III.
Maheras P., Xoplaki E., Kutiel H., 1999. Wet and dry monthly anomalies across the Mediterranean basin and their relationship with circulation, 1860–1990. Theor. Appl. Climatol. 64, 189–199.
Maheras P., 2000. Synoptic situations causing drought in the Mediterranean basin, In: Vogt J.V., Somma F., (eds.) Drought and Drought Mitigation in Europe, Kluwer Academic Publishers, pp. 91-102.
Marquina A., 2004. Environmental challenges in the Mediterranean 2000–2050. Ed. Springer-Science, Dordrecht.
Quadrelli R., Pavan V., Molteni F., 2001. Winter variability of Mediterranean precipitation and its links with large-scale circulation anomalies. Clim. Dyn. 17, 457–466.
Ryan W.B.F., Carbotte S.M., Coplan J.O., O'Hara S., Melkonian A., Arko R., Weissel R.A., Ferrini V., Goodwillie A., Nitsche F., Bonczkowski J., Zemsky R., 2009. Global Multi-Resolution Topography synthesis, Geochem. Geophys. Geosyst. 10, Q03014, doi: 10.1029/2008GC002332.
Styllas M., Schimmelpfennig I., Ghilardi M., Benedetti L., 2016. Geomorphologic and paleoclimatic evidence of Holocene glaciation on Mount Olympus, Greece. The Holocene 26(5), p.709–721.
Styllas M., Schimmelpfennig I., Benedetti L., Ghilardi M. & ASTER Team, 2018. Late-glacial and Holocene history of the northeast Mediterranean mountain glaciers - New insights from in situ-produced 36Cl-based cosmic ray exposure dating of paleo-glacier deposits on Mount Olympus, Greece. Quaternary Science Reviews, 193, 244–265.
The Climate Data Guide: Hurrell North Atlantic Oscillation (NAO) Index (station-based). Retrieved from https://climatedataguide.ucar.edu/climate-data/hurrell-north-atlantic-oscillation-nao-index-station-based.
Trigo I.S., Davies T.D., 2000. Decline in Mediterranean rainfall caused by a weakening of Mediterranean cyclones. Geophys. Res. Lett. 27, 18, 2913–2916.
Trouet V., Esper J., Graham N.E., et al (2009). Persistent positive North Atlantic Oscillation mode dominated the Medieval Climate Anomaly. Science 324, p. 78–80.
Viviroli D., Weingartner R., 2004. The hydrological significance of mountains: from regional to global scale. Hydrology and Earth System Sciences 8, 1016–1029.
Viviroli D., Dürr H.H., Messerli B., Meybeck M., Weingartner R., 2007. Mountains of the world—water towers for humanity: typology, mapping and global significance. Wat. Resource. Res. 43 (7),W07447.
Xoplaki E., Luterbacher J., Burkard B., Patrikas I., Maheras P., 2000. Connection between the large-scale 500 mb geopotential height fields and precipitation over Greece during wintertime. Clim. Res. 14, 129–146.
Xoplaki E., 2004. Wet season Mediterranean precipitation variability: Influence of large-scale dynamics and trends. Clim. Dyn. 23, p. 63-78.
Xoplaki E., Luterbacher J., González-Rouco J.F., 2006. Mediterranean summer temperature and winter precipitation, large scale dynamics, Trends. II Nuovo Cimento C. DOI: 10.1393/ncc/i2005-10220-4.
Zappa G., Hoskins B.J., Shepherd T.G., 2015. The dependence of wintertime Mediterranean precipitation on the atmospheric circulation response to climate change. Environ. Res. Lett. 10129501.