European cyclone track analysis based on ECMWF ERA‐40 data sets

Bartholy, Judit; Pongrácz, Rita; Pattantyús-Ábrahám, Margit

doi:10.1002/joc.1392

Cited by 41 publications

(16 citation statements)

References 7 publications

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“…The cave system was formed in lagoon facies of the Wetterstein Limestone of the Triassic (Ladinian) age and is characterized by almost horizontal passages. The area is under the influence of European cyclone tracks with the most important cyclogenesis centers in the Icelandic and the Western Mediterranean regions (Bartholy et al, 2006(Bartholy et al, , 2009. Cyclones starting-up near these regions transport marine moisture to Hungary (Bottyán et al, 2013) by the induced frontal systems.…”

Section: Cave Site and Stalagmitesmentioning

confidence: 99%

“…Most Icelandic cyclones arrive in winter, but approximately 30 cyclones derive from the Mediterranean area, most frequently in spring (Kelemen et al 2015). Significant weather influences could also come from the East (Bartholy at al., 2006). However, this weather pattern brings cold/dry air into the region, so precipitation is typically not accompanied with these macrocirculation situations.…”

Section: Cave Site and Stalagmitesmentioning

confidence: 99%

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Stable isotope compositions of speleothems from the last interglacial – Spatial patterns of climate fluctuations in Europe

Demény

Kern

Czuppon

et al. 2017

Quaternary Science Reviews

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Highlights Stable isotope compositions of a last interglacial (LIG) stalagmite, Central Europe  A sequence of climate change events during the LIG for European speleothems  Hydrogen isotope data of inclusion water reveal a major event at about 125 ± 2 ka  Temperature and winter precipitation changes around the Mediterranean at 125 ± 2 ka ABSTRACT Studies on the last interglacial (LIG) can provide information on how our environment behaved in a period of slightly higher global temperatures at about 125 ± 4 ka, even if it is not the best analogue for the Holocene. The available LIG climate proxy records are usually better preserved and can be studied at a higher resolution than those of the preceding interglacials, allowing detailed comparisons. This paper presents complex stable hydrogen, carbon and oxygen isotope records obtained for carbonate (δ 13 Baradla data indicate enhanced aridity and seasonality for a part of GS26, with the relative dominance of summer precipitation and Mediterranean moisture contribution. Following the GS26 event, the effect of long-term global cooling becomes dominant in the Baradla isotope records and leads to glacial inception at about 109 ka.

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Section: Cave Site and Stalagmitesmentioning

confidence: 99%

Section: Cave Site and Stalagmitesmentioning

confidence: 99%

Stable isotope compositions of speleothems from the last interglacial – Spatial patterns of climate fluctuations in Europe

Demény

Kern

Czuppon

et al. 2017

Quaternary Science Reviews

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“…It is a cyclone that forms or intensifies from a pre-existing cyclone to the south of the Alps for orographic effect (Jansà, 1997;Jansa et al, 2014) over the Gulf of Genoa, Ligurian Sea. This cyclone generally remains stationary but sometimes can determine the weather of central Europe (Sáez de Cámara et al, 2011) or the Italian peninsula (Trigo et al, 1999) according to the "Vb" and "Vd" Van Bebber cyclone tracks (Bartholy et al, 2006). This secondary depression is linked to the arrival of the Atlantic perturbations behind the Alps and is formed on the Gulf primarily in the autumn, winter and spring periods (Anagnostopoulou et al, 2006).…”

Section: Geographical Features Of Genoamentioning

confidence: 99%

Geohydrological hazards and urban development in the Mediterranean area: an example from Genoa (Liguria, Italy)

Faccini

Luino

Sacchini

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Abstract. The metropolitan area and the city of Genoa has become a national and international case study for geohydrological risk, mainly due to the frequency of floods. In 2014, there were landslides again, as well as flash floods that have particularly caused casualties and economic damage. The weather features of the Gulf of Genoa and the geomorphological-environmental setting of the Ligurian coastal land are the predisposing factors that determine heavy rains and their resulting effects on the ground.This study analysed the characteristics of the main meteorological disasters that have hit Genoa since the start of the 20th century; changes in the rainfall regime are evaluated and the main stages of urbanization of the area are detailed, with the resulting changes to the drainage network, in order to identify the main causes of this high geohydrological risk. To this end, scientists have used climate data recorded at the station of Genoa University, in operation since 1833, and at Ponte Carrega station, located in the middle reach of the Bisagno stream, a well-known watercourse because of its frequent floods. Urban sprawl was evaluated through a multi-temporal mapping comparison, using maps available from the beginning of the 19th century up to the current regional technical maps.The average air temperature in Genoa shows a statistically significant increase, while the number of rainy days displays an equally clear decrease over time. The total annual rain value does not seem to indicate rather noticeable changes. The intensity of rain in Genoa expressed as rainfall rate, i.e. the ratio of annual rainfall and number of rainy days, shows statistically significant growth.The geohydrological vulnerability in Genoa has increased over time due to urban development which has established modifications in land use, from agricultural to urban, especially in the valley floor. Waterways have been confined and reduced to artificial channels, often covered in their final stretch; in some cases they have even been totally removed. These actions should be at least partially reversed in order to reduce the presently high hydrological risk.

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“…Numerical weather prediction (NWP) models are to be initialized from a reference state [European Centre for Medium-Range Weather Forecasts (ECMWF), 2013], which makes forecasts strongly dependent on the initial analysis used. Many other scientific applications rely on atmospheric analysis products, ranging from cyclone track analysis [Bartholy et al, 2006] to stratospheric ozone depletion studies [Shepherd, 2008], to the verification of the Comprehensive Nuclear Test-Ban Treaty (CTBT) using infrasound as one of the four verification techniques [Dahlman et al, 2009]. Thus, as atmospheric models form the cornerstone of many atmospheric sciences disciplines, it is essential to validate the analysis product.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

et al. 2014

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In this paper, we evaluate vertical wind and temperature profiles that are produced by the European Centre for Medium‐Range Weather Forecasts (ECMWF) atmospheric analysis. The evaluation is carried out on both hemispheres: we make use of stratospheric infrasound arrivals from Mount Etna (37°N) and Mount Yasur (22°S). The near‐continuous, high activity of both volcanoes permits the study of stratospheric propagation along well‐defined paths with a time resolution ranging from hours to multiple years. Infrasound observables are compared to theoretical estimates obtained from acoustic propagation modeling using the ECMWF analysis. While a first‐order agreement is found for both hemispheres, we report on significant discrepancies around some of the equinox periods and other intervals during which the atmosphere is in a state of transition and dynamical oscillations of the atmosphere dominate over the general circulation. We present an inversion study in which we make use of measured trace velocity estimates to estimate first‐order effective sound speed model updates in a Bayesian framework. Deviations from the a priori models around the stratopause up to 10% (≈ 30 m s−1) are estimated. Such updates are in line with the results from comparisons between ECMWF analysis and observations from lidar and microwave Doppler spectroradiometer facilities that were colocated during the course of the 2012–2013 Atmospheric dynamics Research and InfraStructure in Europe (ARISE) measurement campaign.

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European cyclone track analysis based on ECMWF ERA‐40 data sets

Cited by 41 publications

References 7 publications

Stable isotope compositions of speleothems from the last interglacial – Spatial patterns of climate fluctuations in Europe

Stable isotope compositions of speleothems from the last interglacial – Spatial patterns of climate fluctuations in Europe

Geohydrological hazards and urban development in the Mediterranean area: an example from Genoa (Liguria, Italy)

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

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