Searching for resemblance between large-scale sea level pressure patterns leading to “intense” precipitation events over Italy

Tartaglione, Nazario; Maugeri, Maurizio; Dalan, Fabio; Brunetti, Michele; Nanni, T.; Speranza, Antonio

doi:10.1007/s00704-007-0374-5

Cited by 7 publications

(4 citation statements)

References 34 publications

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“…In Israel, Saaroni et al (2010) analyzed the relationship between the low of Cyprus and precipitation during wet period (November March). In Italy, Tartaglione et al (2009) analyzed intense precipitation events covering the period from 1951 to 2000, comparing the resemblance between two states of the atmosphere leading to the same outcome. In the boundary region of the Swiss Alps, Hanggi et al (2011) analyzed how changes in WTs were related to precipitation trends.…”

Section: Earth Sciencementioning

confidence: 99%

Circulation weather types and spatial variability of daily precipitation in the Iberian Peninsula

2014

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The relationships between atmospheric circulation patterns and daily Iberian rainfall are here explored at high spatial resolution (0.2 • ) using the Jenkinson and Collison automated classification scheme with 26 Weather Types (WTs). The WTs were computed by means of the daily EMULATE Mean Sea Level Pressure dataset (EMSLP) while the high resolution precipitation database corresponds to the recent Iberia02 daily gridded precipitation dataset over the 1950-2003 period. Six monthly indexes relating the WTs and precipitation were analyzed: their Frequency, the Mean Precipitation, the Percentage Contribution, the Area of Influence, the Precipitation Intensity, and Efficiency. Except for the Frequency of the WTs, all other indexes were evaluated studying their spatial distribution over the Iberian Peninsula, focusing on a WT and a month at time. A small number of WTs (7) was found to capture a high percentage (∼70%) of monthly Iberian precipitation. The Westerly WT is the most influent one, followed by the Cyclonic, the Northwesterly and the Southwesterly WTs. Westerly flows, however, do not affect the Mediterranean fringe or the Cantabrian coast, which are dominated by the Easterly and Northerly WTs, respectively. Rainfall along the Mediterranean coastline and the Ebro basin depends on a variety of WTs, but their effects are confined to narrow areas and short temporal intervals, suggesting that local factors such as convective processes, orography and the proximity to a warm water body could play a major role in precipitation processes. We show that the use of daily gridded precipitation dataset holds the advantage of measuring the daily rainfall amount due to each WT directly instead to relying on the predicted values of the regression model as done in previous works.

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Section: Earth Sciencementioning

confidence: 99%

Circulation weather types and spatial variability of daily precipitation in the Iberian Peninsula

2014

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“…Later, already in the process of transition from MEDEX to HyMeX, the work by Nuissier et al (2011) can be mentioned. Tartaglione et al (2009) deal with similar aspects, but with reference to Italy. Analogous research lines were explored in Spain, with papers referring to atmospheric patterns related to heavy rain in the Balearics (Lana et al, 2007) and for the whole Spanish and French Mediterranean area (Martinez et al, 2008).…”

Section: Climatological Aspectsmentioning

confidence: 99%

MEDEX: a general overview

Jansà

Alpert

Arbogast

et al. 2014

Nat. Hazards Earth Syst. Sci.

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Abstract. The general objective of the international MEDiterranean EXperiment (MEDEX) was the better understanding and forecasting of cyclones that produce high impact weather in the Mediterranean. This paper reviews the motivation and foundation of MEDEX, the gestation, history and organisation of the project, as well as the main products and scientific achievements obtained from it. MEDEX obtained the approval of World Meteorological Organisation (WMO) and can be considered as framed within other WMO actions, such as the ALPine EXperiment (ALPEX), the Mediterranean Cyclones Study Project (MCP) and, to a certain extent, THe Observing System Research and Predictability EXperiment (THORPEX) and the HYdrological cycle in Mediterranean EXperiment (HyMeX). Through two phases (2000-2005 and 2006-2010), MEDEX has produced a specific database, with information about cyclones and severe or high impact weather events, several main reports and a specific data targeting system field campaign (DTS-MEDEX-2009). The scientific achievements are significant in fields like climatology, dynamical understanding of the physical processes and social impact of cyclones, as well as in aspects related to the location of sensitive zones for individual cases, the climatology of sensitivity zones and the improvement of the forecasts through innovative methods like mesoscale ensemble prediction systems.

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“…The relationship between these events in the Mediterranean and largescale atmospheric circulation patterns at surface or upper troposphere can help to disclose the underlying physical processes and has been extensively studied with the aid of synoptic classification or multivariate methods (e.g. Maheras et al, 1999;Kutiel et al, 2002;Haylock and Goodness, 2004;Littman et al, 2000;Houssos et al, 2008;Tartaglione et al, Correspondence to: M. Hatzaki (marhat@phys.uoa.gr) 2009; Hatzaki et al, 2009). These studies revealed the important role of low frequency climatic variability in changes of the extreme precipitation regime in Mediterranean, including North Atlantic Oscillation, Mediterranean Oscillation, North-Caspian Sea pattern, and Eastern Mediterranean Pattern (Hatzaki et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Future changes in the relationship of precipitation intensity in Eastern Mediterranean with large scale circulation

et al. 2010

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Abstract. The objective of this study is to investigate the linkage of large-scale upper air circulation over the greater European area with intense precipitation events over Eastern Mediterranean and then to estimate potential changes in the atmospheric patterns in the future, under global warming conditions. For this purpose, results from the regional climate model HadRM3P and Global Circulation Model HadAM3P have been used for the present period 1960–1990 (control run) and the future period 2070–2100 based on the B2a IPCC emission scenario. For the identification of the precipitation extremes the Simple Daily Intensity Index (SDII) was employed. Our analysis has shown a notable relation of extreme events with the East Atlantic and Scandinavia teleconnection patterns, as well as the Eastern Mediterranean Pattern (EMP) during the wet period. In the future, similar patterns are found, with different magnitude and position, following the projected changes in atmospheric circulation over Europe.

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Searching for resemblance between large-scale sea level pressure patterns leading to “intense” precipitation events over Italy

Cited by 7 publications

References 34 publications

Circulation weather types and spatial variability of daily precipitation in the Iberian Peninsula

Circulation weather types and spatial variability of daily precipitation in the Iberian Peninsula

MEDEX: a general overview

Future changes in the relationship of precipitation intensity in Eastern Mediterranean with large scale circulation

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