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The 2001 Mesoscale Convective Systems over iberia and the Balearic Islands

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2005-10
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Springer Wien
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This paper characterizes Mesoscale Convective Systems (MCSs) during 2001 over Iberia and the Balearic Islands and their meteorological settings. Enhanced infrared Meteosat imagery has been used to detect their occurrence over the Western Mediterranean region between June and December 2001 according to satellite-defined criteria based on the MCS physical characteristics. Twelve MCSs have been identified. The results show that the occurrence of 2001 MCSs is limited to the August-October period, with September being the most active period. They tend to develop during the late afternoon or early night, with preferred eastern Iberian coast locations and eastward migrations. A cloud shield area of 50.000 km(2) is rarely exceeded. When our results are compared with previous studies, it is possible to assert that though 2001 MCS activity was moderate, the convective season was substantially less prolonged than usual, with shorter MCS life cycles and higher average speeds. The average MCS precipitation rate was 3.3 mm.h(-1) but a wide range of values varying from scarce precipitation to intense events of 130 mm.24 h(-1) (6 September) were collected. The results suggest that, during 2001, MCS rainfall was the principal source of precipitation in the Mediterranean region during the convective season, but its impact varied according to the location. Synoptic analysis based on NCEP/NCAR reanalysis show that several common precursors could be identified over the Western Mediterranean Sea when the 2001 MCSs occurred: a low-level tongue of moist air and precipitable water (PW) exceeding 25 mm through the southern portion of the Western Mediterranean area, low-level zonal warm advection over 2 degrees C.24 h(-1) towards eastern Iberia, a modest 1000-850 hPa equivalent potential temperature (theta(e)) difference over 20 degrees C located close to the eastern Iberian coast, a mid level trough (sometimes a cut-off low) over Northern Africa or Southern Spain and high levels geostrophic vorticity advection exceeding 12.10(-10) s(-2) over eastern Iberia and Northern Africa. Finally, the results suggest that synoptic, orographic and a warm-air advection were the most relevant forcing mechanisms during 2001.
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© Springer-Verlag 2005. We wish to thank the Instituto Nacional de Meteorología (INM) for providing the soundings and precipitation data used in this paper. I. L. Jirak and an anonymous reviewer provided useful comments which improved the original manuscript.
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Anderson, CJ, Arritt, RW (1988) Mesoscale Convective Complexes and persistent elongated convective systems over the United States during 1992 and 1993.. Mon Wea Rev 126: pp. 578-599 Ashley, WS, Mote, TL, Dixon, PG, Trotter, SL, Powell, EJ, Durkee, JD, Grundstein, AJ (2003) Distribution of Mesoscale Convective Complex rainfall in the United States.. Mon Wea Rev 131: pp. 3003-3017 Augustine, JA, Caracena, F (1994) Lower-tropospheric precursors to nocturnal MCS development over the Central United States.. Wea Forecast 9: pp. 116-135 Augustine, JA, Howard, KW (1988) Mesoscale Convective Complexes over the United States during 1985.. Mon Wea Rev 116: pp. 685-701 Augustine, JA, Howard, KW (1991) Mesoscale Convective Complexes over United States during 1986 and 1987.. Mon Wea Rev 119: pp. 1575-1589 Barnes, SL (1985) Omega diagnostics as a supplement to LFM/MOS guidance in weakly forced convective situations.. Mon Wea Rev 113: pp. 2122-2141 Cana L (1997) Desarrollo de la actividad frontogenética en diferentes situaciones de precipitación intensa. M.S. thesis, Dept. of Atmospheric Sciences, Universidad Complutense de Madrid, 197 pp (in Spanish) Canalejo M, Carretero O, Riosalido R (1993) Sistemas Convectivos de Mesoescala 1990. Tech. Note 9, Instituto Nacional de Meteorología, Madrid, 139 pp (in Spanish) Canalejo M, Carretero O, Riosalido R (1994) Sistemas Convectivos de Mesoescala 1992. Tech. Note 14, Instituto Nacional de Meteorología, Madrid, 54 pp (in Spanish) Caracena, F, Fristch, JM (1983) Focusing mechanism in the Texas hill country flash floods of 1978.. Mon Wea Rev 111: pp. 2319-2332 Carretero O, Canalejo M, Riosalido R (1993) Sistemas Convectivos de Mesoescala 1991. Tech. Note 12, Instituto Nacional de Meteorología, Madrid, 122 pp (in Spanish) Cotton, WR, Lin, M, McAnelly, R, Tremback, C (1989) A composite model of Mesoscale Convective Complexes.. Mon Wea Rev 117: pp. 765-783 Doswell, CA (1987) The distinction between large-scale and mesoscale contribution to severe convection: a case study example.. Wea Forecast 2: pp. 3-16 Doswell, CA, Brooks, HE, Maddox, RA (1996) Flash flood forecasting: an ingredients-based methodology.. Wea Forecast 11: pp. 560-581 Doswell, CA, Ramis, C, Romero, R, Alonso, S (1998a) A diagnostic study of three heavy precipitation episodes in the Western Mediterranean region.. Wea Forecast 13: pp. 102-124 Durran, DR, Snellman, LW (1987) The diagnosis of synoptic-scale vertical motion in an operational environment.. Wea Forecast 2: pp. 17-31 Elvira B, Carretero O, Riosalido R (1996) Sistemas Convectivos de Mesoescala 1994. Tech. Note 24 Instituto Nacional de Meteorología, Madrid, 146 pp (in Spanish) Fritsch, JM, Kane, RJ, Chelius, CR (1986) The contribution of Mesoscale Convective Weather Systems to the warm-season precipitation in the United States.. J Appl Meteorol 25: pp. 1333-1345 Fu, R, AD, Del Genio, Rossow, WB (1990) Behavior of deep convective clouds in the tropical Pacific deduced from ISCCP radiances.. J Climate 3: pp. 1129-1152 Galway, JG (1956) The lifted index as a predictor of latent instability.. Bull Am Meteor Soc 37: pp. 528-529 García-Dana F, Font R, Rivera A (1982) Meteorological situation during the heavy rain event in the eastern zone of Spain during October-82. Instituto Nacional de Meteorología, Madrid, 80 pp Hernández, E, Cana, L, Díaz, J, García, R, Gimeno, L (1998) Mesoscale Convective Complexes over the western Mediterranean area during 1990–1994.. Meteorol Atmos Phys 68: pp. 1-12 Homar, V, Romero, R, Ramis, R, Alonso, S (2002) Numerical study of the October 2000 torrential precipitation event over eastern Spain: analysis of the synoptic-scale stationarity.. Ann Geophys 20: pp. 2047-2066 Hoskins, BJ, Pedder, MA (1980) The diagnosis of middle latitude synoptic development.. Quart J Roy Meteor Soc 106: pp. 707-719 Jirak, IL, Cotton, WR, McAnelly, RL (2003) Satellite and radar survey of Mesoscale Convective System development.. Mon Wea Rev 131: pp. 2428-2449 Kalnay, E, Kanamitsu, M, Kistler, R, Collins, W, Deaven, D, Gandin, L, Iredell, M, Saha, S, White, G, Woollen, J, Zhu, Y, Leetmaa, A, Reynolds, B, Chelliah, M, Ebisuzaki, W, Higgins, W, Janowiak, J, Mo, KC, Ropelewski, C, Wang, J, Jenne, R, Joseph, D (1996) The NCEP/NCAR 40-year Reanalysis Project.. Bull Am Meteor Soc 77: pp. 437-471 Kane, RJ, Chelius, CR, Fritsch, JM (1987) Precipitation characteristics of Mesoscale Convective Weather Systems.. J Appl Meteorol 26: pp. 1345-1357 Laing, AG, Fritsch, JM (1997) The global population of mesoscale convective complexes.. Quart J Roy Meteor Soc 123: pp. 389-405 Laing, AG, Fritsch, JM (2000) The large-scale environments of the global populations of Mesoscale Convective Complexes.. Mon Wea Rev 128: pp. 2756-2776 Llasat MC (1987) Heavy rain events in Catalonia: Genesis, evolution and mechanism. PhD Diss., Universidad de Barcelona, 250 pp (in Spanish) Machado, LAT, Rossow, WB, Guedes, RL, Walker, AW (1998) Life cycle variations of Mesoscale Convective Systems over the Americas.. Mon Wea Rev 126: pp. 1630-1654 Maddox, RA (1980) Mesoscale Convective Complexes.. Bull Am Meteor Soc 61: pp. 1374-1387 Maddox, RA (1983) Large-scale meteorological conditions associated with midlatitude Mesoscale Convective Complexes.. Mon Wea Rev 111: pp. 1475-1493 Maddox, RA, Vonder Haar, TH (1979) Covariance analyses of satellite-derived mesoscale wind fields.. J Appl Meteorol 18: pp. 1327-1334 Maddox, RA, Rodgers, DM, Howard, KW (1982) Mesoscale Convective Complexes over the United States during 1981 – Annual summary.. Mon Wea Rev 110: pp. 1501-1514 Mapes, BE, Houze, RA (1993) Cloud clusters and superclusters over the oceanic warm pool.. Mon Wea Rev 121: pp. 1398-1416 Martín F, Elizaga F, Carretero O, Riosalido R (1994) Sistemas Convectivos de Mesoescala 1993. Tech. Note 15, Instituto Nacional de Meteorología, Madrid, 136 pp (in Spanish) McAnelly, RL, Cotton, WR (1986) Meso-β-scale characteristics of an episode of Meso-α-scale Convective Complexes.. Mon Wea Rev 114: pp. 1740-1770 McAnelly, RL, Cotton, WR (1989) The precipitation life cycle of Mesoescale Convective Complexes over the central United States.. Mon Wea Rev 117: pp. 784-808 Miller, D, Fritsch, JM (1991) Mesoscale Convective Complexes in the Western Pacific Region.. Mon Wea Rev 119: pp. 2978-2992 Ramis, C, Llasat, MC, Genovés, A, Jansá, A (1994) The October-1987 floods in Catalonia: Synoptic and mesoscale mechanism.. Meteorol Appl 1: pp. 337-350 Ramis, C, Romero, R, Homar, V, Alonso, S, Alarcón, M (1998) Diagnosis and numerical simulation of a torrential precipitation event in Catalonia (Spain).. Meteorol Atmos Phys 69: pp. 1-21 Riosalido R (1991) Caracterización mediante imágenes de satélite de los Sistemas Convectivos de Mesoescala durante la Campaña Previmet Mediterráneo-89. II Simposio Nacional de Predicción, Instituto Nacional de Meteorología, Madrid, pp 135–148 (in Spanish) Riosalido R, Elizaga F, Carretero O, Martín F (1998) Climatología satélite de Sistemas Convectivos de Mesoescala en las proximidades de la Península Ibérica. Aplicación a la predicción de lluvias torrenciales. Madrid: Tech. Report-29, CICYT Project CLI95-1776, Instituto Nacional de Meteorología, 200 pp (in Spanish) Rivera A (1987) Precipitaciones torrenciales de otoño en el área mediterránea: Algunos criterios de análisis, diagnosis y predicción. Tech. Note, Instituto Nacional de Meteorología, Madrid, 18 pp (in Spanish) Rodgers, DM, Howard, KW, Johnston, EC (1983) Mesoscale Convective Complexes over the United States during 1982-annual summary.. Mon Wea Rev 111: pp. 2363-2369 Rodgers, DM, Magnano, MJ, Arns, JH (1985) Mesoscale Convective Complexes over the United States during 1983.. Mon Wea Rev 113: pp. 888-901 Romero, R, Doswell, CA, Ramis, C (2000) Mesoscale numerical study of two cases of long-lived quasi-stationary convective systems over Eastern Spain.. Mon Wea Rev 128: pp. 3731-3751 Watson, AI, Meitín, JG, Cunning, JB (1988) Evolution of the kinematic structure and precipitation characteristics of a Mesoscale Convective System on 20, May 1979.. Mon Wea Rev 116: pp. 1555-1567 Zipser EJ (1982) Use a conceptual model of the life-cycle of mesoscale convective systems to improve very-short-range forecasts. New York Nowcasting: K.A. Browning Academic Press, pp 191–204
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