Photo of Byron Bay - one of Australia's best beaches!




Mies anterior Maio 2012 Proximo mês
2a 3a 4a 5a 6a Sab Dom
week 18 1 2 3 4 5 6
week 19 7 8 9 10 11 12 13
week 20 14 15 16 17 18 19 20
week 21 21 22 23 24 25 26 27
week 22 28 29 30 31
Eventos/Seminários Imprimir Email help
Flat View
Ver por ano
Vista Mensal
Ver por mês
Weekly View
Ver por semana
Daily View
Ver Hoje
On some aspect of Stratospheric, Tropospheric and Surface Ozone
Quarta-feira, 30 Maio 2012por  Este endereço de e-mail está protegido de spam bots, pelo que necessita do Javascript activado para o visualizar Hits : 2899

Por: Pavan Kulkarni


Data: 30 de Maio

Hora: 14:30
Local: Anfiteatro 1 - CLAV



Ozone is present in the atmosphere from surface to top of the atmosphere (~80 km).About 85-90% of the ozone in our atmosphere is contained in the stratosphere, theregion from about 10 to 50-km above Earth's surface. 10-15% of the ozone is containedin the troposphere, the lowest part of our atmosphere (surface to 8-15km, depending onlatitude) where all of our weather takes place. Small amount of ozone is contained in themesosphere, the region from about 50 to 80km.Breathing ozone is lethal at dosage levels of a few molecules per million air moleculesfor flora and fauna. It is highly corrosive in nature. This is why ozone at the surface isreferred to as a pollutant. Yet ozone high in the atmosphere screens out biologicallyharmful solar ultraviolet radiation, responsible for destructive alteration of geneticcellular material in plants and animals, as well as human beings. Without the "ozonelayer" high up in the atmosphere, life on the surface of the Earth would not be possibleas we know it.Human activities over the centuries have affected the natural balance of Ozonein our atmosphere. Depletion of stratospheric “good” ozone and increase in freetropospheric as well as surface “bad” ozone are of concern for both environmental andclimate change prospective. Therefore understanding the spatial-temporal variation,photophysics and photochemistry of ozone is very important.


JEvents v1.5.4   Copyright © 2006-2010