Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications
Industrial and biomass burning emissions of black carbon (BC) from low- and mid-latitudes dominate the radiative forcing by absorbing impurities trapped in snow and ice at mid- and high- northern latitudes. Correct model representation of albedo reduction by BC-contaminated snow is crucial because o...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.419.300 2023-05-15T13:10:41+02:00 Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications Charles S. Zender Jean-charles Gallet Florent Dominé Ghislain Picard Mark G The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.300 http://dust.ess.uci.edu/ppr/ppr_ZGD09.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.300 http://dust.ess.uci.edu/ppr/ppr_ZGD09.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://dust.ess.uci.edu/ppr/ppr_ZGD09.pdf text ftciteseerx 2016-01-08T03:52:09Z Industrial and biomass burning emissions of black carbon (BC) from low- and mid-latitudes dominate the radiative forcing by absorbing impurities trapped in snow and ice at mid- and high- northern latitudes. Correct model representation of albedo reduction by BC-contaminated snow is crucial because our GCM simulations show that dirty snow can explain about 30 % of the observed 20th century Arctic warming. Until now, measurements of actual snow darkening by BC have been attempted only in the field, under non-reproducible conditions, and limited by the BC concentration that happens to be present. We have conducted the first measurements of the direct effect of BC-contamination on snow albedo by in a controlled environment. We doped natural snow with a commercially available BC-analogue and measured the resulting albedo change at visible and near-infrared wavelengths. Snow albedo was measured in a (portable) integrating sphere system. Snow grain size is estimated from the near-infrared albedo. Snow density, temperature, and BC properties were known a priori. The albedo measurement reproducibility is about 1 % for natural snow. Our measurements agree with model predictions that BC concentrations from 250 ppbmto Text albedo Arctic black carbon Unknown Arctic |
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description |
Industrial and biomass burning emissions of black carbon (BC) from low- and mid-latitudes dominate the radiative forcing by absorbing impurities trapped in snow and ice at mid- and high- northern latitudes. Correct model representation of albedo reduction by BC-contaminated snow is crucial because our GCM simulations show that dirty snow can explain about 30 % of the observed 20th century Arctic warming. Until now, measurements of actual snow darkening by BC have been attempted only in the field, under non-reproducible conditions, and limited by the BC concentration that happens to be present. We have conducted the first measurements of the direct effect of BC-contamination on snow albedo by in a controlled environment. We doped natural snow with a commercially available BC-analogue and measured the resulting albedo change at visible and near-infrared wavelengths. Snow albedo was measured in a (portable) integrating sphere system. Snow grain size is estimated from the near-infrared albedo. Snow density, temperature, and BC properties were known a priori. The albedo measurement reproducibility is about 1 % for natural snow. Our measurements agree with model predictions that BC concentrations from 250 ppbmto |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Charles S. Zender Jean-charles Gallet Florent Dominé Ghislain Picard Mark G |
spellingShingle |
Charles S. Zender Jean-charles Gallet Florent Dominé Ghislain Picard Mark G Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications |
author_facet |
Charles S. Zender Jean-charles Gallet Florent Dominé Ghislain Picard Mark G |
author_sort |
Charles S. Zender |
title |
Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications |
title_short |
Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications |
title_full |
Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications |
title_fullStr |
Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications |
title_full_unstemmed |
Manuscript to be Submitted to Geophys. Res. Lett. Albedo Reduction by Black Carbon in Snow: Measurements and Implications |
title_sort |
manuscript to be submitted to geophys. res. lett. albedo reduction by black carbon in snow: measurements and implications |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.300 http://dust.ess.uci.edu/ppr/ppr_ZGD09.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic black carbon |
genre_facet |
albedo Arctic black carbon |
op_source |
http://dust.ess.uci.edu/ppr/ppr_ZGD09.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.300 http://dust.ess.uci.edu/ppr/ppr_ZGD09.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766238970362986496 |