1,721,123 research outputs found
Possibility of a better definition and measurement of storm erosivity
No full textIl volume è congiuntamente pubblicato da:
The Austrian Federal Ministry of Agriculture, Forestry, Environment and Water Management; Institute of Water Management, Hydrology and Hydraulic Engineering, Dept. Water-Atmosphere-Environment, University of Natural Resources and Applied Life Sciences (BOKU), Wien
Urban aerosol pollution: a by-product of energy consumption
No full textAll human activities, sustained by a given energy input, produce a certain amount of waste, since there
is no process in nature with efficiency equal to 1, as known from thermodynamics. Among the different
categories of 'waste', we can include also atmospheric emissions, that constitute a threat to the
environment, since they affect the climate system, the biosphere and also the human health.
Atmospheric aerosol emissions can be considered among the by-products of energetic consumption, as we can demonstrate, and they represent a known major risk since many centuries. The relation between energy consumptions and aerosol primary and secondary emissions is here discussed. The attention, then, is focused on the urban environment. Aerosol pollution should be regarded as a byproduct of energy consumption, while discussing about the different environment constraints within urban planning strategie
Possibility of Secondary Sub-micron Aerosol Mass Concentrations Forecasting: A Case Study Toward the Possibility of A Future Nowcasting Approach
No full textParticulate Matter (PM) pollution represents a global concern, due to its adverse effect both on environment and on human health. European Envi-ronmental Protection Agency data reveal that one of the most exposed regions is Northern Italy. The attention has been focused on a metropoli-tan city within this area, Torino (NW Italy), and studied the relation between sub-micron particles and their precursor gases under real atmospheric conditions, considering that fine particles have the most relevant adverse health effects. A photolytic computation model developed using an environmental chamber has been adapted and tested for real environmental conditions. The obtained algorithm can constitute the basic building-block for an effective PM1 nowcasting method. Testing it through the use of 2008-2011 summertime data (during the summer the photolytic activity is greater), selected considering only the days with stable fine weather conditions, we found that there is a strong stable dependence between the concentrations of sub-micron particles and its precursor gases, NO in particular. This fact will allow to calculate separately the dependence of PM1 mass concentration values (that represent 65% of PM10) on generation, respect to transport and scavenging phenomena. Finally, this result makes clear that an active policy on NO emission reduction should have effects also on PM pollution in the atmosphere
Climate Parameter Variability
No full textIn this chapter, both, the variability and trends of climatological variables and of indirect factors—the cosmogeophysical and the terrestrial ones—will be discussed. All the sections are developed keeping in mind the potential influence of such observables on drought occurrence. The first part is focused on the climate system, as seen from our planet, dividing the text into two sections: the first section deals with meteorological drought, and the second with hydrological drought. The second part, in which more critical issues are discussed, deals with the Sun–Earth influence, galactic cosmic rays, and aerosols
Progetto IMPACT
No full textprogetto IMPACT (interazione in microgravità tra aerosol e vapore d’acqua per lo studio della formazione delle nubi), finanziato ESA. Partecipazione attività team industrial
Ricerca Integrata per l’Applicazione di tecnologie e processi innovativi per la lotta alla Desertificazione),
No full textcaratterizzazione microfisica delle precipitazioni in tre siti del sud Italia: Rotondella (MT), Licata (AG) e Surigheddu (SS
Enti di ricerca e industria nel settore del trasporto dell'energia elettrica in prospettiva europea
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