Search results for " Snow"
showing 3 items of 23 documents
Iodine speciation in rain, snow and aerosols
2008
Iodine oxides, such as iodate, should be the only thermodynamically stable sink species for iodine in the troposphere. However, field observations have increasingly found very little iodate and significant amounts of iodide and soluble organically bound iodine (SOI) in precipitation and aerosols. The aim of this study was to investigate iodine speciation, including the organic fraction, in rain, snow, and aerosols in an attempt to further clarify aqueous phase iodine chemistry. Diurnal aerosol samples were taken with a 5 stage cascade impactor and a virtual impactor (PM<sub>2.5</sub>) from the Mace Head research station, Ireland, during summer 2006. Rain was collected from Austr…
Can a snow structure model estimate snow characteristics relevant to reindeer husbandry?
2014
Snow affects foraging conditions of reindeer e.g. by increasing the energy expenditures for moving and digging work or, in contrast, by making access of arboreal lichen easier. Still the studies concentrating on the role of the snow pack structure on reindeer population dynamics and reindeer management are few. We aim to find out which of the snow characteristics are relevant for reindeer in the northern boreal zone according to the experiences of reindeer herders and is this relevance seen also in reproduction rate of reindeer in this area. We also aim to validate the ability of the snow model SNOWPACK to reliably estimate the relevant snow structure characteristics. We combined meteorolog…
Architetture per conservare la neve: dalle Madonie a villa Cattolica
2013
Fino a quando non sono stati inventati i moderni sistemi di refrigerazione, il compito di mantenere basse temperature è stato delegato a particolari architetture. Nella provincia di Palermo questo compito era affidato alla “fossa della neve." In generale trattasi di un ambiente sotterraneo in cui era conservata la neve, da utilizzare per la produzione di gelati e bevande fresche. La neve proveniva dalle “neviere” - “fosse della neve” presenti nelle montagne delle Madonie. In genere il commercio della neve ha rappresentato una voce importantissima nell’economia e in generale nella vita degli abitanti delle Madonie, soprattutto fra la fine del XVI e i primi decenni del XX secolo. A Palermo e …