Heavy rainfall in Mediterranean cyclones, Part II: Water budget, precipitation efficiency and remote water sources

  • Emmanouil FlaounasEmail author
  • Lluis Fita
  • Konstantinos Lagouvardos
  • Vassiliki Kotroni


In this study, we use convection-permitting high resolution (3 km) simulations to quantify and analyse the water budget, precipitation efficiency and water sources of 100 intense Mediterranean cyclones. To this end, we calculate the water content, advection and microphysical processes of water vapour and rain water by implementing new diagnostics to the Weather Research and Forecasting (WRF) model. The 100 intense cyclones have been randomly selected from a 500 intense cyclones dataset, identified and tracked in an 11-year time period in part I of this study. Results are presented in a composite approach showing that most rainfall takes place to the north-east side of the cyclones, close to their centre. Rainfall location is concomitant to the area of horizontal moisture flux convergence and is quasi-equal to the amount of water vapour loss due to microphysical processes. Similar results were found regardless if cyclones produce high or low rainfall amounts. Vertical profiles of the water budget terms revealed deeper clouds for the cyclones producing high rainfall, consistent with higher values of vertical advection of both water vapour and rain water. Finally, cyclones were analysed with respect to their precipitation efficiency, i.e. the ratio between the rainwater produced in an atmospheric column and the consequent rainfall, and showed that cyclones tend to be more efficient when their rainfall production takes place over land. Therefore, there is a complex relation between water vapour advection, precipitation efficiency and rainfall which is discussed through the comparison of two tropical-like cyclones with two cyclones that produced low rainfall amounts. Finally, our analysis is complemented by applying a Lagrangian approach to all 100 cyclones in order to quantify the water vapour source regions that contribute to the cyclones’ rainfall due to local surface evaporation. Results showed that these regions are located over both the Atlantic and the Mediterranean, however we show that cyclones producing high rainfall are related with higher water transport from both the subtropical Atlantic and the Mediterranean Sea.



The authors are grateful to Heini Wernli and one anonymous Reviewer for their fruitful comments and in depth review. Emmanouil Flaounas received support by the Marie Skłodowska-Curie actions (Grant Agreement-658997) in the framework of the project ExMeCy. This work was supported by computational time granted from the Greek Research and Technology Network (GRNET) in the National HPC facility—ARIS—under project ID pr003009.


  1. Braun SA (2006) High-resolution simulation of Hurricane Bonnie (1998). Part II: Water Budget. J Atmos Sci 63:43–64. CrossRefGoogle Scholar
  2. Carrió DS, Homar V, Jansa A, Romero R, Picornell MA (2017) Tropicalization process of the 7 November 2014 Mediterranean cyclone: numerical sensitivity study. Atmos Res 197:300–312. CrossRefGoogle Scholar
  3. Chazette P, Flamant C, Raut J, Totems J, Shang X (2016) Tropical moisture enriched storm tracks over the Mediterranean and their link with intense rainfall in the Cevennes–Vivarais area during HyMeX. QJR Meteorol Soc 142:320–334. CrossRefGoogle Scholar
  4. Davolio S, Miglietta MM, Moscatello A, Pacifico F, Buzzi A, Rotunno R (2009) Numerical forecast and analysis of a tropical-like cyclone in the Ionian Sea. Nat Hazards Earth Syst Sci 9(2):551–562CrossRefGoogle Scholar
  5. Dee D, Uppala SM, Simmons AJ, Berrisford P, Poli P, Kobayashi S, Andrae U, Balmaseda MA, Balsamo G, Bauer P, Bechtold P, Beljaars ACM, van de Berg L, Bidlot J, Bormann N, Delsol C, Dragani R, Fuentes M, Geer AJ, Haimberger L, Healy SB, Hersbach H, Hólm EV, Isaksen L, Kållberg P, Köhler M, Matricardi M, McNally AP, Monge-Sanz BM, Morcrette JJ, Park BK, Peubey C, de Rosnay P, Tavolato C, Thépaut JN, Vitart F (2011) The era-interim reanalysis: configuration and performance of the data assimilation system. QJRMS 137:553–597. CrossRefGoogle Scholar
  6. Dudhia J (1989) Numerical study of convection observed during the winter monsoon experiment using a mesoscale two-dimensional model. J Atmos Sci 46:3077–3107.;2 CrossRefGoogle Scholar
  7. Duffourg F, Ducrocq V (2013) Assessment of the water supply to Mediterranean heavy precipitation: a method based on finely designed water budgets. Atmos Sci Lett 14(3):133–138CrossRefGoogle Scholar
  8. Fita L, Flaounas E (2018) Medicanes as subtropical cyclones: the December 2005 case from the perspective of surface pressure tendency diagnostics and atmospheric water budget. QJR Meteorol Soc. Google Scholar
  9. Flaounas E, Raveh-Rubin S, Wernli H, Drobinski P, Bastin S (2015) The dynamical structure of intense Mediterranean cyclones. Clim Dyn 44(9–10):2411–2427CrossRefGoogle Scholar
  10. Flaounas E, Di Luca A, Drobinski P, Mailler S, Arsouze T, Bastin S, Beranger K, Lebeaupin Brossier C (2016) Cyclone contribution to the Mediterranean Sea water budget. Clim Dyn 44:1–15. Google Scholar
  11. Flaounas E, Kotroni V, Lagouvardos K, Gray SL, Rysman JF, Claud C (2017) Heavy rainfall in Mediterranean cyclones. Part I: contribution of deep convection and warm conveyor belt. Clim Dyn 27:1–5Google Scholar
  12. Fritz C, Wang Z (2014) Water vapor budget in a developing tropical cyclone and its implication for tropical cyclone formation. J Atmos Sci 71:4321–4332. CrossRefGoogle Scholar
  13. Gallus WA Jr, Pfeifer M (2008) Intercomparison of simulations using 5 WRF microphysical schemes with dual-polarization data for a German squall line. Adv Geosci 16:109CrossRefGoogle Scholar
  14. Gao S, Li X (2011) Can water vapour process data be used to estimate precipitation efficiency? QJR Meteorol Soc 137:969–978. CrossRefGoogle Scholar
  15. Giannaros T, Kotroni V, Lagouvardos K (2015) Predicting Lightning activity in greece with the weather research and forecasting (WRF) Model. Atmos Res 156:1–13CrossRefGoogle Scholar
  16. Hong SY (2010) A new stable boundary-layer mixing scheme and its impact on the simulated East Asian summer monsoon. Q J R Meteorol Soc 136(651):1481–1496CrossRefGoogle Scholar
  17. Hong SY, Juang HMH, Zhao Q (1998) Implementation of prognostic cloud scheme for a regional spectral model. Mon Weather Rev 126:26212639Google Scholar
  18. Hong SY, Dudhia J, Chen SH (2004) A revised approach to ice-microphysical processes for the bulk parameterization of cloud and precipitation. Mon Weather Rev 132:103–120CrossRefGoogle Scholar
  19. Hong SY, Noh Y, Dudhia J (2006) A new vertical diffusion package with an explicit treatment of entrainment processes. Mon Weather Rev 134(9):2318–2341CrossRefGoogle Scholar
  20. Huang H, Yang M, Sui C (2014) water budget and precipitation efficiency of Typhoon Morakot (2009). J Atmos Sci 71:112–129. CrossRefGoogle Scholar
  21. Huffman GJ, Bolvin DT, Nelkin EJ, Wolff DB, Adler RF, Gu G, Hong Y, Bowman KP, Stocker EF (2007) The TRMM multisatellite precipitation analysis (TMPA): quasi-global, multiyear, combined-sensor precipitation estimates at fine scales. J Hydrometeorol 8:38–55. CrossRefGoogle Scholar
  22. Jansa A, Genoves A, Picornell M, Campins J, Riosalido R, Carretero O (2001) Western Mediterranean cyclones and heavy rain. Part 2: Statistical approach. Meteorol Appl 8(1):43–56. CrossRefGoogle Scholar
  23. Jansa A, Alpert P, Arbogast P, Buzzi A, Ivancan-Picek B, Kotroni V, Llasat MC, Ramis C, Richard E, Romero R, Speranza A (2014) MEDEX: a general overview. Nat Hazards Earth Syst Sci 14:1965–1984CrossRefGoogle Scholar
  24. Kain JS (2004) The Kain–Fritsch convective parameterization: an update. J Appl Meteorol 43(1):170–181CrossRefGoogle Scholar
  25. Katsanos D, Lagouvardos K, Kotroni V, Huffmann GJ (2004) Statistical evaluation of MPA-RT high-resolution precipitation estimates from satellite platforms over the Central and Eastern Mediterranean. Geophys Res Lett 31:L06116CrossRefGoogle Scholar
  26. Kotroni V, Lagouvardos K, Defer E, Dietrich S, Porcù F, Medaglia CM, Demirtas M (2005) The Antalya 5 December 2002 storm: observations and model analysis. J Appl Meteorol 45:576–590CrossRefGoogle Scholar
  27. Michaelides S, Karacostas T, Sánchez JL, Retalis A, Pytharoulis I, Homar V, Romero R, Zanis P, Giannakopoulos C, Bühl J, Ansmann A, Merino A, Melcón P, Lagouvardos K, Kotroni V, Bruggeman A, López-Moreno JI, Berthet C, Katragkou E, Tymvios F, Hadjimitsis DG, Mamouri RE, Nisantzi A (2018) Reviews and perspectives of high impact atmospheric processes in the Mediterranean. Atmos Res 208:4–44CrossRefGoogle Scholar
  28. Miglietta MM, Mastrangelo D, Conte D (2015) Influence of physics parameterization schemes on the simulation of a tropical-like cyclone in the Mediterranean Sea. Atmos Res 153:360–375CrossRefGoogle Scholar
  29. Miltenberger A, Seifert KA, Joos H, Wernli H (2015) A scaling relation for warm-phase orographic precipitation: a Lagrangian analysis for 2D mountains. Q J R Meteorol Soc 141:2185–2198CrossRefGoogle Scholar
  30. Mlawer EJ, Taubman SJ, Brown PD, Iacono MJ, Clough SA (1997) Radiative transfer for inhomogeneous atmosphere: Rrtm, a validated correlated-k model for the long wave. J Geophys Res 102(D14):16-663–16-682CrossRefGoogle Scholar
  31. Pfahl S, Wernli H (2012) Spatial coherency of extreme weather events in Germany and Switzerland. Int J Climatol 32:1863–1874CrossRefGoogle Scholar
  32. Raveh-Rubin S, Flaounas E (2017) A dynamical link between deep Atlantic extratropical cyclones and intense Mediterranean cyclones. Atmos Sci Lett 18:215–221. CrossRefGoogle Scholar
  33. Raveh-Rubin S, Wernli H (2016) Large-scale wind and precipitation extremes in the Mediterranean: dynamical aspects of five selected cyclone events. Q J R Meteorol Soc 142:3097–3114. CrossRefGoogle Scholar
  34. Romilly TG, Gebremichael M (2011) Evaluation of satellite rainfall estimates over Ethiopian river basins. Hydrol Earth Syst Sci 15(5):1505CrossRefGoogle Scholar
  35. Skamarock WC, Klemp JB, Dudhia J, Gill DO, Duda DMBMG, Huang XY, Wang W, Powers JG (2008) A description of the advanced research wrf version 3. NCAR TECHNICAL NOTE 475: NCAR/TN475 + STRGoogle Scholar
  36. Sodemann H, Schwierz C, Wernli H (2008) Interannual variability of Greenland winter precipitation sources: Lagrangian moisture diagnostic and North Atlantic Oscillation influence. J Geophys Res 113:D03107. Google Scholar
  37. Sprenger M, Wernli H (2015) The LAGRANTO Lagrangian analysis tool-version 2.0. Geosci Model Dev 8(8):2569–2586CrossRefGoogle Scholar
  38. Sui C, Li X, Yang MJ (2007) On the definition of precipitation efficiency. J Atmos Sci 64(12):4506–4513CrossRefGoogle Scholar
  39. Wernli H, Paulat M, Hagen M, Frei C (2008) SAL—a novel quality measure for the verification of quantitative precipitation forecasts. Mon Wea Rev 136:4470–4487CrossRefGoogle Scholar
  40. Wicker LJ, Skamarock WC (2002) Time splitting methods for elastic models using forward time schemes. Mon Wea Rev 130:2088–2097CrossRefGoogle Scholar
  41. Winschall A, Pfahl S, Sodemann H, Wernli H (2012) Impact of North Atlantic evaporation hot spots on southern Alpine heavy precipitation events. QJR Meteorol Soc 138:1245–1258. CrossRefGoogle Scholar
  42. Winschall A, Sodemann H, Pfahl S, Wernli H (2014) How important is intensified evaporation for Mediterranean precipitation extremes? J Geophys Res Atmos 119:5240–5256CrossRefGoogle Scholar
  43. Wu D, Dong X, Xi B, Feng Z, Kennedy A, Mullendore G, Gilmore M, Tao WK (2013) Impacts of microphysical scheme on convective and stratiform characteristics in two high precipitation squall line events. J Geophys Res Atmos. Google Scholar
  44. Yang M, Braun SA, Chen D (2011) Water budget of Typhoon Nari (2001). Mon Wea Rev 139:3809–3828. CrossRefGoogle Scholar

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© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.National observatory of AthensAthensGreece
  2. 2.Centro de Investigaciones del Mar y la Atmósfera (CIMA), CONICET-UBA, CNRS UMI-IFAECIBuenos AiresArgentina

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