%0 Journal Article %T Snow - a photobiochemical exchange platform for volatile and semi-volatile organic compounds with the atmosphere %+ Department of Chemistry [Montréal] %+ Department of Atmospheric and Oceanic Sciences [Montréal] %+ CHANG (CHANG) %+ Département de Sciences Biologiques [Montreal] %+ Department of Anatomy and Cell Biology [Montréal] %+ Geowissenschaftliches Zentrum Göttingen (GZG) %+ Georg-August-University = Georg-August-Universität Göttingen %A Ariya, P. A. %A Domine, F. %A Kos, Gregor %A Amyot, M. %A Côté, V. %A Vali, H. %A Lauzier, T. %A Kuhs, W.F. %A Techmer, K. %A Heinrichs, T. %A Mortazavi, R. %Z NSERC, FQRNT, CFI %< avec comité de lecture %@ 1448-2517 %J Environmental Chemistry %I CSIRO Publishing %V 8 %N 1 %P 62-73 %8 2011-02-28 %D 2011 %R 10.1071/EN10056 %Z Sciences of the Universe [physics]/Earth Sciences/GlaciologyJournal articles %X Field and laboratory studies of organic compounds in snow (12 species; concentrations <= 17 μg L-1) were conducted and microorganisms in snow and aerosols at urban and Arctic sites were investigated (snow: total bacteria count <= 40000 colony forming units per millilitre (CFU mL(-1)), fungi <= 400 CFU mL(-1); air: bacteria <= 2.2 x 10(7) CFU m(-3), fungi <= 84 CFU m(-3)). Bio-organic material is transferred between snow and air and influence on snow-air exchange processes is demonstrated. Volatile organic compounds in snow are released into the air upon melting. In vitro photochemistry indicated an increase of <= 60 μg L-1 for 1,3- and 1,4-dimethylbenzenes. Bacillus cereus was identified and observed in snow and air with ice-nucleating being P. syringae absent. As a result snow photobiochemical reactions should be considered in describing organic matter air-snow exchanges, and the investigation of climate change. %G English %L insu-00646050 %U https://insu.hal.science/insu-00646050 %~ INSU %~ UNIV-SAVOIE %~ UGA %~ CNRS %~ UNIV-GRENOBLE1 %~ INPG %~ IRSTEA %~ AGREENIUM %~ INRAE %~ USMB-COMUE