Plastics collection poses a quandary: if one wishes the easiest collection, the citizen must be given very simple instructions as to what plastics to set out; if the maxi­ mum collection of the many recyclable plastics is desired, one must accept mixed plastics. In either case, process­ ing is necessary: in the first, to control contamination; in the second to separate the polymers. Many sophis...

In this research, the efficiency of the comminution circuit as well as the efficiency of size classification equipment of the concentrator plant 2 of Sarcheshmeh copper complex was studied. The comminution circuit of this plant includes one SAG mill in a closed circuit with a vibrating screen and one ball mill with a size classification system of hydrocyclone. The goal of this work was to calcu...

Pacific Islands are at the forefront of the trend towards high or even 100% renewable energy penetration of their electricity grids. Many have been highly or totally reliant on imported diesel fuel, with associated price uncertainties and GDP impacts. Countries like Fiji are highly reliant on hydro power and become vulnerable in periods of low rainfall, such as during El Nino events, when diese...

Bayesian statistical models were developed for the number of tropical cyclones and the rate at which these cyclones became hurricanes in the North Atlantic. We find that, controlling for the cold tongue index and the North Atlantic oscillation index, there is high probability that the number of cyclones has increased in the past thirty years; but the rate at which these storms become hurricanes...

[1] New evidence based on recent satellite data is presented to provide a rare opportunity in quantifying the long-speculated contribution of tropical cyclones to enhance ocean primary production. In July 2000, moderate cyclone Kai-Tak passed over the South China Sea (SCS). During its short 3-day stay, Kai-Tak triggered an average 30-fold increase in surface chlorophyll-a concentration. The est...

The long-term goals are to understand how variabilities in the large-scale atmospheric environment and the internal tropical cyclone structure influence tropical cyclone track and intensity characteristics and define how these influences differ between developing, mature, and decaying tropical cyclones. During the initial stages of tropical cyclone development, structure and track characteristi...

[1] The heavy winds associated with tropical cyclones generate strong upper ocean mixing. Recent studies suggest that this enhanced mixing significantly contributes to the ocean poleward heat transport, mainly due to a strengthening of the subtropical cells. A general circulation model is used here to show that whether the poleward heat transport is actually increased depends crucially on the l...

Personal experience can influence our attitudes and actions concerning climate change. This paper examines the experience-perception link in relation to tropical cyclones using a distinctly revealed preference approach, mitigating biases of prior research in this area. Specifically, we study how people alter their internet searches related to climate change in response to tropical cyclones. Usi...

Extratropical cyclones are the primary natural hazard affecting western Europe. They are associated with strong winds and rainfall (Lamb, 1991) which can result in significant societal impacts. For example, windstorms Anatol, Lothar and Martin in 1999 resulted in approximately €16 billion of total insured losses (Swiss Re, 2016). Cyclones contribute to more than 70% of the precipitation that fa...