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Soot-doped natural snow and its albedo - Results from field experiments

Svensson, Jonas; Virkkula, Aki; Meinander, Outi; Kivekäs, Niku LU ; Hannula, Henna Reetta; Järvinen, Onni; Peltoniemi, Jouni I.; Gritsevich, Maria; Heikkilä, Anu and Kontu, Anna, et al. (2016) In Boreal Environment Research 21. p.481-503
Abstract

Soot has a pronounced effect on the cryosphere and experiments are still needed to reduce the associated uncertainties. This work presents a series of experiments to address this issue, with soot being deposited onto a natural snow surface after which the albedo changes were monitored. The albedo reduction was the most pronounced for the snow with higher soot content, and it was observed immediately following soot deposition. Compared with a previous laboratory study the effects of soot on the snow were not as prominent in outdoor conditions. During snowmelt, about 50% of the originally deposited soot particles were observed to remain at the snow surface. More detailed experiments are however needed to better explain soot’s effect on... (More)

Soot has a pronounced effect on the cryosphere and experiments are still needed to reduce the associated uncertainties. This work presents a series of experiments to address this issue, with soot being deposited onto a natural snow surface after which the albedo changes were monitored. The albedo reduction was the most pronounced for the snow with higher soot content, and it was observed immediately following soot deposition. Compared with a previous laboratory study the effects of soot on the snow were not as prominent in outdoor conditions. During snowmelt, about 50% of the originally deposited soot particles were observed to remain at the snow surface. More detailed experiments are however needed to better explain soot’s effect on snow and to better quantify this effect. Our albedo versus soot parameterization agreed relatively well with previously published relationships.

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Boreal Environment Research
volume
21
pages
23 pages
publisher
Finnish Zoological and Botanical Publishing Board
external identifiers
  • scopus:84995705662
ISSN
1239-6095
language
English
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yes
id
841ac61e-a560-47c6-b4d0-41cf91519191
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http://hdl.handle.net/10138/172963
date added to LUP
2017-02-21 10:44:19
date last changed
2017-04-11 16:30:07
@article{841ac61e-a560-47c6-b4d0-41cf91519191,
  abstract     = {<p>Soot has a pronounced effect on the cryosphere and experiments are still needed to reduce the associated uncertainties. This work presents a series of experiments to address this issue, with soot being deposited onto a natural snow surface after which the albedo changes were monitored. The albedo reduction was the most pronounced for the snow with higher soot content, and it was observed immediately following soot deposition. Compared with a previous laboratory study the effects of soot on the snow were not as prominent in outdoor conditions. During snowmelt, about 50% of the originally deposited soot particles were observed to remain at the snow surface. More detailed experiments are however needed to better explain soot’s effect on snow and to better quantify this effect. Our albedo versus soot parameterization agreed relatively well with previously published relationships.</p>},
  author       = {Svensson, Jonas and Virkkula, Aki and Meinander, Outi and Kivekäs, Niku and Hannula, Henna Reetta and Järvinen, Onni and Peltoniemi, Jouni I. and Gritsevich, Maria and Heikkilä, Anu and Kontu, Anna and Neitola, Kimmo and Brus, David and Dagsson-Waldhauserova, Pavla and Anttila, Kati and Vehkamäki, Marko and Hienola, Anca and de Leeuw, Gerrit and Lihavainen, Heikki},
  issn         = {1239-6095},
  language     = {eng},
  pages        = {481--503},
  publisher    = {Finnish Zoological and Botanical Publishing Board},
  series       = {Boreal Environment Research},
  title        = {Soot-doped natural snow and its albedo - Results from field experiments},
  volume       = {21},
  year         = {2016},
}