Black carbon scavenging in low-level Arctic clouds
Black carbon (BC) from anthropogenic or natural sources can be transported to the Arctic, where it affects the surface radiation budget by scattering and absorbing solar radiation or by acting as cloud condensation nuclei. The extent to which BC is involved in Arctic cloud formation remains uncertai...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5018395 2023-09-05T13:16:34+02:00 Black carbon scavenging in low-level Arctic clouds Zieger, P. Heslin-Rees, D. Karlsson, L. Koike, M. Modini, R. Krejci, R. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018395 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-2384 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018395 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-2384 2023-08-13T23:41:23Z Black carbon (BC) from anthropogenic or natural sources can be transported to the Arctic, where it affects the surface radiation budget by scattering and absorbing solar radiation or by acting as cloud condensation nuclei. The extent to which BC is involved in Arctic cloud formation remains uncertain due to the lack of direct and long-term observations. Here, we present a 4-year study on observations of BC concentrations of aerosols and cloud residuals (i.e. dried cloud particles) using a counterflow virtual impactor inlet at Zeppelin Observatory, Svalbard. We will show that the scavenging of BC follows a clear seasonal cycle with almost complete scavenged fractions of BC in summer and smaller scavenged fractions in late winter and early fall during the Arctic haze period. The scavenged BC fractions were positively correlated with cloud water content and showed a dependence on air temperature most likely due to cloud-microphysical processes. A source analysis showed that clouds at the site are mainly of marine origin, in opposite to non-cloudy air, where anthropogenic BC sources over land are more dominant. Conference Object Arctic black carbon Svalbard GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic Svalbard |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
Black carbon (BC) from anthropogenic or natural sources can be transported to the Arctic, where it affects the surface radiation budget by scattering and absorbing solar radiation or by acting as cloud condensation nuclei. The extent to which BC is involved in Arctic cloud formation remains uncertain due to the lack of direct and long-term observations. Here, we present a 4-year study on observations of BC concentrations of aerosols and cloud residuals (i.e. dried cloud particles) using a counterflow virtual impactor inlet at Zeppelin Observatory, Svalbard. We will show that the scavenging of BC follows a clear seasonal cycle with almost complete scavenged fractions of BC in summer and smaller scavenged fractions in late winter and early fall during the Arctic haze period. The scavenged BC fractions were positively correlated with cloud water content and showed a dependence on air temperature most likely due to cloud-microphysical processes. A source analysis showed that clouds at the site are mainly of marine origin, in opposite to non-cloudy air, where anthropogenic BC sources over land are more dominant. |
format |
Conference Object |
author |
Zieger, P. Heslin-Rees, D. Karlsson, L. Koike, M. Modini, R. Krejci, R. |
spellingShingle |
Zieger, P. Heslin-Rees, D. Karlsson, L. Koike, M. Modini, R. Krejci, R. Black carbon scavenging in low-level Arctic clouds |
author_facet |
Zieger, P. Heslin-Rees, D. Karlsson, L. Koike, M. Modini, R. Krejci, R. |
author_sort |
Zieger, P. |
title |
Black carbon scavenging in low-level Arctic clouds |
title_short |
Black carbon scavenging in low-level Arctic clouds |
title_full |
Black carbon scavenging in low-level Arctic clouds |
title_fullStr |
Black carbon scavenging in low-level Arctic clouds |
title_full_unstemmed |
Black carbon scavenging in low-level Arctic clouds |
title_sort |
black carbon scavenging in low-level arctic clouds |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018395 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic black carbon Svalbard |
genre_facet |
Arctic black carbon Svalbard |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-2384 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018395 |
op_doi |
https://doi.org/10.57757/IUGG23-2384 |
_version_ |
1776198094620196864 |