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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F07%3A00020318%21RIV10-MSM-14310___
rdf:type
skos:Concept n19:Vysledek
dcterms:description
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in snow/ice and the release of these photochemically generated 5 species may significantly impact the chemistry of the overlying atmosphere. Nitrogen oxide and oxidant precursor fluxes have been measured in a number of snow covered environments, where in some cases the emissions significantly impact the overlying boundary layer. For example, photochemical ozone production (such as that occurring in polluted mid-latitudes) of 3-4 ppbv/day has been observed at South Pole, due 10 to high OH and NO levels present in a relatively shallow boundary layer. Field and laboratory experiments have determined that the origin of the observed NOx flux is the photochemistry of nitrate within the snowpack, however some details of the mechanism have not yet been elucidated. It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in snow/ice and the release of these photochemically generated 5 species may significantly impact the chemistry of the overlying atmosphere. Nitrogen oxide and oxidant precursor fluxes have been measured in a number of snow covered environments, where in some cases the emissions significantly impact the overlying boundary layer. For example, photochemical ozone production (such as that occurring in polluted mid-latitudes) of 3-4 ppbv/day has been observed at South Pole, due 10 to high OH and NO levels present in a relatively shallow boundary layer. Field and laboratory experiments have determined that the origin of the observed NOx flux is the photochemistry of nitrate within the snowpack, however some details of the mechanism have not yet been elucidated.
dcterms:title
An overview of snow photochemistry: evidence, mechanisms and impacts An overview of snow photochemistry: evidence, mechanisms and impacts
skos:prefLabel
An overview of snow photochemistry: evidence, mechanisms and impacts An overview of snow photochemistry: evidence, mechanisms and impacts
skos:notation
RIV/00216224:14310/07:00020318!RIV10-MSM-14310___
n3:aktivita
n6:Z n6:P
n3:aktivity
P(GA205/05/0819), Z(MSM0021622412)
n3:cisloPeriodika
2
n3:dodaniDat
n8:2010
n3:domaciTvurceVysledku
n18:1626418
n3:druhVysledku
n13:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
409361
n3:idVysledku
RIV/00216224:14310/07:00020318
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Photochemistry; snow; review
n3:klicoveSlovo
n14:review n14:snow n14:Photochemistry
n3:kodStatuVydavatele
FR - Francouzská republika
n3:kontrolniKodProRIV
[BE2730DDD102]
n3:nazevZdroje
Atmospheric Chemistry and Physics Discussions
n3:obor
n15:CC
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
35
n3:projekt
n5:GA205%2F05%2F0819
n3:rokUplatneniVysledku
n8:2007
n3:svazekPeriodika
7
n3:tvurceVysledku
Zhu, T. Grannas, A. M. Sodeau, J. R. Carver, G. Crawford, J. H. Hoffmann, M. R. Wolff, E. W. Bergin, M. Jacobi, H. W. Shepson, P. B. Klán, Petr Chen, G. Hutterli, M. Sander, R. Huey, L. G. Plane, J. Helmig, D. Jones, A. E. Frey, M. M. Simpson, W. R. Bottenheim, J. Guzman, M. I. Savarino, J. Lefer, B. Beine, H. J. Domine, F. Heard, D. E. Anastasio, C. McConnell, J. Honrath, R. E. Amman, M. von Glasow, R. Boxe, C. S. Dibb, J. Weller, R.
n3:wos
000249072900013
n3:zamer
n7:MSM0021622412
s:issn
1680-7316
s:numberOfPages
44
n16:organizacniJednotka
14310