China and its population are confronted with fundamental environmental challenges, as both, environmental degeneration and the impact of climate change exhibit critical social, economic and political implications for their future development. Among the various environmental challenges China faces we can identify pollution issues, soil erosion, acid rain, and sea-level rise. This variety of envi...

eight sites were sampled during seven rain events to quantify and identify the sources ofpolycyclic aromatic hydrocarbons in urban runoff in the city of tijuana, mexico. the total σ16 pahsconcentration rangedfrom 1113 to 4866 μg/lin the sampled sites and thetotal suspended solid concentrations ranged from 7725 to 4413 μg/l. the high concentrations of total suspended solids were probably the res...

Using the Monte Carlo (MC) method, this paper derives arithmetic and geometric means and associated variances of the net capillary drive parameter, G, that appears in the Parlange infiltration model, as a function of soil texture and antecedent soil moisture content. Approximate expressions for the arithmetic and geometric statistics of G are also obtained, which compare favourably with MC gene...

Following an unprecedented drought, Australia's 2019/2020 “Black Summer” fire season caused severe damage, gravely impacting both humans and ecosystems, increasing susceptibility to other hazards. Heavy precipitation in early 2020 led flooding runoff that entrained ash soil burned areas, sediment concentration rivers, reducing water quality. We exemplify this hazard cascade a catchment New Sout...

eight sites were sampled during seven rain events to quantify and identify the sources ofpolycyclic aromatic hydrocarbons in urban runoff in the city of tijuana, mexico. the total σ16 pahsconcentration rangedfrom 1113 to 4866 μg/lin the sampled sites and thetotal suspended solid concentrations ranged from 7725 to 4413 μg/l. the high concentrations of total suspended solids were probably the res...

Leading-edge erosion (LEE) of wind turbine blades is caused by the impact particles, for example, raindrops, and leads to a loss in power production high maintenance cost. Investigations have shown that reduction tip speed, so-called erosion-safe mode, increases blade lifetime but influence different drop-size parameterizations rain amounts on unclear. This study compares calculations using two...

Accurate and reliable methods of measuring windblown sediment are needed to confirm, validate, and improve erosion models, assess the intensity of aeolian processes and related damage, determine the source of pollutants, and for other applications. This paper outlines important principles to consider in conducting field-scale wind erosion studies and proposes strategies of field data collection...

Leading edge erosion of wind turbine blades is one the most critical issues in energy production, resulting lower efficiency, as well increased maintenance costs and downtime. Erosion initiated by impacts from rain droplets other atmospheric particles, so to protect blades, special protective coatings are applied increase their lifetime without adding significantly weight or friction blade. The...

Rain-induced leading-edge erosion of wind turbine blades is associated with high repair and maintenance costs. For efficient operation maintenance, models are required that provide estimates blade coating lifetime at a real scale. In this study, statistical rainfall model established describes probabilistic distributions rain parameters critical for site-specific assessment. A new droplet size ...