The Italian open data meteorological portal: MISTRAL

AbstractAt the national level, in Italy, observational and forecast data are collected by various public bodies and are often kept in various small, heterogeneous and non‐interoperable repositories, released under different licenses, thus limiting the usability for external users. In this context, MISTRAL (the Meteo Italian SupercompuTing PoRtAL) was launched as the first Italian meteorological open data portal, with the aim of promoting the reuse of meteorological data sets available at national level coverage. The MISTRAL portal provides (and archives) meteorological data from various observation networks, both public and private, and forecast data that are generated and post‐processed within the Consortium for Small‐scale Modeling‐Limited Area Model Italia (COSMO‐LAMI) agreement using high performance computing (HPC) facilities. Also incorporated is the Italy Flash Flood use case, implemented with the collaboration of European Centre for Medium‐Range Weather Forecasts (ECMWF), which exploits cutting edge advances in HPC‐based post‐processing of ensemble precipitation forecasts, for different model resolutions, and applies those to deliver novel blended‐resolution forecasts specifically for Italy. Finally, in addition to providing architectures for the acquisition and display of observational data, MISTRAL also delivers an interactive system for visualizing forecast data of different resolutions as superimposed multi‐layer maps

Mesenterite retrattile: presentazione di un caso

Gli Autori riportano un caso di mesenterite retrattile, processo infiammatorio cronico del meso evolvente verso la fibrosi. La mesenterite è una patologia istologicamente benigna che tuttora si associa, in una certa percentuale di casi, a neoplasie prevalentemente dell’apparato urogenitale. Le manifestazioni cliniche sono caratterizzate dalla comparsa di masse addominali e di crisi subocclusive intestinali che possono esitare in occlusioni franche. La diagnostica per immagini è aspecifica e spesso la diagnosi è possibile solo con la biopsia del meso. Il trattamento nei casi non complicati da occlusione è basato sull’uso di farmaci steroide

Multimode N00N states in driven atomtronic circuits

International audienc

iSCAPE. WP5. Effects of Vegetation Urban Street Canyons. Summer 2017 and Winter 2018 Experimental Campaigns

This dataset contains the observations of air quality collected within two experimental campaigns conducted in summer 2017 (07 August 2017-26 September 2017) and winter 2018 (15 January 2018-15 February 2018) in two street canyons in the city of Bologna, to verify the effectiveness of vegetation in altering ventilation levels and pollutant concentration in real-world street canyons. The dataset also contains the meteorological data collected during non-synoptic periods, representing the ideal condition to assess the behavior of the local circulation and turbulence. The experimental field campaigns were setup under WP3 (“Planning and evaluation of PCS solutions”) and conducted under WP5 (“Monitoring and Evaluation of the Interventions”) of the iSCAPE project. Briefly, two parallel urban street canyons characterized by a different occurrence of vegetation, i.e. one almost free of vegetation (Marconi St.) and one with a tree line along both sides of the street (Laura Bassi St.), were instrumented for measurements of meteorology and turbulence variables at three height levels, while pollutant concentrations were monitored at ground level inside both canyons. This dataset is linked to the paper “Disentangling the effect of vegetation on ventilation and air quality in urban street canyons: the Bologna iSCAPE experimental campaigns” by Di Sabatino et al., which will be submitted for publication on “Science of the Total Environment” edited by Elsevier, and to the paper “Characteristic Scales for Turbulent Exchange Processes in a Real Urban Canopy” by Barbano et al., which is under review for publication on “Boundary-Layer Meteorology” edited by Springer. If you use this dataset for your research or work purposes, we ask that you acknowledge us in the use of your data, which can be done by including a proper citation in any documents or publications using these data

Prevedere per prevenire e per gestire le emergenze

ABBINARE LA RACCOLTA E L\u2019ELABORAZIONE DATI SULLE CONCENTRAZIONI DI INQUINANTI ALLE PREVISIONI METEOROLOGICHE CONSENTIREBBE DI ATTIVARE TEMPESTIVAMENTE MISURE EMERGENZIALI. IN COLLABORAZIONE CON L\u2019UNIVERSIT\uc0 DI BOLOGNA, ARPAE STA TESTANDO UN NUOVO MODELLO PREVISIONALE CON RISULTATI INTERESSANTI

Impact of vegetation on ventilation mechanisms in real urban street canyons: the Bologna iSCAPE case study

Traffic induced emissions have been commonly addressed as one of the major sources of air pollution in cities. The typical structures of European historical city centres, such as street canyons where the presence of densely built up areas limits the efficacy of atmospheric winds to disperse pollutants, enhance near ground concentrations. It is known that tree planting in urban street canyons influences pollutants dispersion and exchange with the free atmosphere by affecting wind ventilation at street and neighbourhood levels. Nevertheless, the actual quantification of tree influence depends on different and mutual interacting factors: synoptic meteorological conditions, wind stress at the top of the canyon, geometry of the street canyon, morphology of the neighbourhood and vegetation type. Within the recently EU-funded H2020 project iSCAPE (www.iscapeproject.eu), two intensive experimental campaigns (summer 2017 and winter 2018) have been conducted in two different urban street canyons in the city of Bologna (IT) with the aim of quantifying the impact of vegetation (two lines of trees at the edge of both sides of the road) on the street canyon in mitigating pollutant concentrations within the urban environment. Specifically, multi-levels sonic anemometers coupled with thermo-hygrometer data, as well as high resolution pollutant concentrations of several compounds (e.g. NOx, CO, PMx), have been used to quantify near surface pollutant dispersion using ventilation mechanisms in both vegetated and non-vegetated street canyons. New ventilation parameters, based on turbulent fluxes and evaluated during non-synoptic conditions, have been developed to explain the pollutant distribution under different wind directions and tree crown characteristics (i.e. porosity). Results are sought for extension to other European cities that are characterized by low synoptic conditions and similar morphological structures

Mechanisms of ventilation in real street canyons in presence of vegetation

Street canyons are the unit elements of the urban morphology. Fluid dynamics within these elements has been widely studied especially in the context of air pollution associated to traffic emissions. Gases and particulate matter resulting from the combustion processes are the main components of these emissions, but also pneumatic abrasion, brake discs consumption and road dust resuspension contribute to air quality deterioration. In general terms, the presence of dense built up areas limits the efficacy of atmospheric winds to disperse pollutants, enhancing near ground concentrations. It is also known that the presence of trees in urban street canyons affects pollutants dispersion and exchange of momentum and scalars with the free atmosphere. Depending on wind direction, the establishment of canyon vortices, corner vortices at street entrance and intersections, intermittent flows within the canyon are drivers for near surface pollutant removal. The presence of trees alter the flow structure and may lead to a reduction of ventilation in streets. In real world applications, the actual quantification of tree influence depends on different and mutual interacting factors: synoptic meteorological conditions, wind stress at the top of the canyon, geometry of the street canyon and vegetation aerodynamic characteristics. Within the recently EU-funded project iSCAPE, the role of vegetation in street canyons has being analyzed in real street canyons in the city of Bologna (Italy). Specifically, during summer 2017, turbulent fluxes are being measured at different heights in two typical street canyons of similar aspect ratio and orientation with respect to the prevailing wind but with different vegetative elements i.e. one is almost free of vegetation and the other has trees at the edge of each traffic lane. Data interpretation is assisted by Computational Fluid Dynamics (CFD) modelling using large eddy simulations (LES). Validated simulations are used to formulate ventilation indices typical for Italian cities. Results are sought for extension to other cities in Europe and elsewhere that are characterized by low synoptic conditions and similar morphological structures

Influence of synoptic meteorological conditions on particle size distributions collected in two urban street canyons in the city of Bologna

The Horizon H2020 iSCAPE (\u201cImproving the Smart Control of Air Pollution in Europe\u201d, GA No. 689954; www.iscapeproject.eu) project aims to study the interactions between urban climate and atmospheric pollution in some European cities. The city of Bologna was selected as pilot city due to its strategical location within the Po Valley, a recognized hot-spot in terms of air quality and climate change. The whole Po Valley is also characterized by high population density and heavily busy areas. During wintertime, poor ventilation conditions, strong thermal inversions and atmospheric pollution build-up frequently favors the formation of fogs in this region, even though fog events in the city of Bologna fog events are not as frequent as elsewhere in this region, where however they tend to occur less and less frequently. Two Optical Particle Counters were deployed within the winter 2018 intensive experimental campaign carried out in two different street canyons (Marconi and Laura Bassi Veratti Sts.) located in the city of Bologna, characterized by the same North-South geographical orientation and similar traffic volumes, but different geometric structures and presence of vegetation: in fact, while Laura Bassi Veratti St. presents a tree line along both sides of the street, vegetation is almost absent in Marconi St. This work presents the comparison between particle size distributions collected at the two experimental sites, as well as the influence of different synoptic meteorological conditions (clear sky, rain, snow) on particles number densities