Newly identified climatically and environmentally significant high-latitude dust sources
Dust particles from high latitudes have a potentially large local, regional, and global significance to climate and the environment as short-lived climate forcers, air pollutants, and nutrient sources. Identifying the locations of local dust sources and their emission, transport, and deposition proc...
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Online Access: | https://refubium.fu-berlin.de/handle/fub188/36862 https://doi.org/10.17169/refubium-36575 https://doi.org/10.5194/acp-22-11889-2022 |
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ftfuberlin:oai:refubium.fu-berlin.de:fub188/36862 2023-05-15T13:38:32+02:00 Newly identified climatically and environmentally significant high-latitude dust sources Meinander, Outi Dagsson-Waldhauserova, Pavla Amosov, Pavel Aseyeva, Elena Atkins, Cliff Baklanov, Alexander Baldo, Clarissa Barr, Sarah L. Barzycka, Barbara Schepanski, Kerstin 2022 42 Seiten application/pdf https://refubium.fu-berlin.de/handle/fub188/36862 https://doi.org/10.17169/refubium-36575 https://doi.org/10.5194/acp-22-11889-2022 eng eng https://refubium.fu-berlin.de/handle/fub188/36862 http://dx.doi.org/10.17169/refubium-36575 doi:10.5194/acp-22-11889-2022 https://creativecommons.org/licenses/by/4.0/ CC-BY high-latitude dust sources climate environment ddc:551 doc-type:article 2022 ftfuberlin https://doi.org/10.17169/refubium-36575 https://doi.org/10.5194/acp-22-11889-2022 2023-01-22T23:24:22Z Dust particles from high latitudes have a potentially large local, regional, and global significance to climate and the environment as short-lived climate forcers, air pollutants, and nutrient sources. Identifying the locations of local dust sources and their emission, transport, and deposition processes is important for understanding the multiple impacts of high-latitude dust (HLD) on the Earth's systems. Here, we identify, describe, and quantify the source intensity (SI) values, which show the potential of soil surfaces for dust emission scaled to values 0 to 1 concerning globally best productive sources, using the Global Sand and Dust Storms Source Base Map (G-SDS-SBM). This includes 64 HLD sources in our collection for the northern (Alaska, Canada, Denmark, Greenland, Iceland, Svalbard, Sweden, and Russia) and southern (Antarctica and Patagonia) high latitudes. Activity from most of these HLD sources shows seasonal character. It is estimated that high-latitude land areas with higher (SI ≥0.5), very high (SI ≥0.7), and the highest potential (SI ≥0.9) for dust emission cover >1 670 000 km2, >560 000 km2, and >240 000 km2, respectively. In the Arctic HLD region (≥60∘ N), land area with SI ≥0.5 is 5.5 % (1 035 059 km2), area with SI ≥0.7 is 2.3 % (440 804 km2), and area with SI ≥0.9 is 1.1 % (208 701 km2). Minimum SI values in the northern HLD region are about 3 orders of magnitude smaller, indicating that the dust sources of this region greatly depend on weather conditions. Our spatial dust source distribution analysis modeling results showed evidence supporting a northern HLD belt, defined as the area north of 50∘ N, with a “transitional HLD-source area” extending at latitudes 50–58∘ N in Eurasia and 50–55∘ N in Canada and a “cold HLD-source area” including areas north of 60∘ N in Eurasia and north of 58∘ N in Canada, with currently “no dust source” area between the HLD and low-latitude dust (LLD) dust belt, except for British Columbia. Using the global atmospheric transport model SILAM, we estimated ... Article in Journal/Newspaper Antarc* Antarctica Arctic Greenland Iceland Svalbard Alaska Freie Universität Berlin: Refubium (FU Berlin) Arctic British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Greenland Patagonia Svalbard |
institution |
Open Polar |
collection |
Freie Universität Berlin: Refubium (FU Berlin) |
op_collection_id |
ftfuberlin |
language |
English |
topic |
high-latitude dust sources climate environment ddc:551 |
spellingShingle |
high-latitude dust sources climate environment ddc:551 Meinander, Outi Dagsson-Waldhauserova, Pavla Amosov, Pavel Aseyeva, Elena Atkins, Cliff Baklanov, Alexander Baldo, Clarissa Barr, Sarah L. Barzycka, Barbara Schepanski, Kerstin Newly identified climatically and environmentally significant high-latitude dust sources |
topic_facet |
high-latitude dust sources climate environment ddc:551 |
description |
Dust particles from high latitudes have a potentially large local, regional, and global significance to climate and the environment as short-lived climate forcers, air pollutants, and nutrient sources. Identifying the locations of local dust sources and their emission, transport, and deposition processes is important for understanding the multiple impacts of high-latitude dust (HLD) on the Earth's systems. Here, we identify, describe, and quantify the source intensity (SI) values, which show the potential of soil surfaces for dust emission scaled to values 0 to 1 concerning globally best productive sources, using the Global Sand and Dust Storms Source Base Map (G-SDS-SBM). This includes 64 HLD sources in our collection for the northern (Alaska, Canada, Denmark, Greenland, Iceland, Svalbard, Sweden, and Russia) and southern (Antarctica and Patagonia) high latitudes. Activity from most of these HLD sources shows seasonal character. It is estimated that high-latitude land areas with higher (SI ≥0.5), very high (SI ≥0.7), and the highest potential (SI ≥0.9) for dust emission cover >1 670 000 km2, >560 000 km2, and >240 000 km2, respectively. In the Arctic HLD region (≥60∘ N), land area with SI ≥0.5 is 5.5 % (1 035 059 km2), area with SI ≥0.7 is 2.3 % (440 804 km2), and area with SI ≥0.9 is 1.1 % (208 701 km2). Minimum SI values in the northern HLD region are about 3 orders of magnitude smaller, indicating that the dust sources of this region greatly depend on weather conditions. Our spatial dust source distribution analysis modeling results showed evidence supporting a northern HLD belt, defined as the area north of 50∘ N, with a “transitional HLD-source area” extending at latitudes 50–58∘ N in Eurasia and 50–55∘ N in Canada and a “cold HLD-source area” including areas north of 60∘ N in Eurasia and north of 58∘ N in Canada, with currently “no dust source” area between the HLD and low-latitude dust (LLD) dust belt, except for British Columbia. Using the global atmospheric transport model SILAM, we estimated ... |
format |
Article in Journal/Newspaper |
author |
Meinander, Outi Dagsson-Waldhauserova, Pavla Amosov, Pavel Aseyeva, Elena Atkins, Cliff Baklanov, Alexander Baldo, Clarissa Barr, Sarah L. Barzycka, Barbara Schepanski, Kerstin |
author_facet |
Meinander, Outi Dagsson-Waldhauserova, Pavla Amosov, Pavel Aseyeva, Elena Atkins, Cliff Baklanov, Alexander Baldo, Clarissa Barr, Sarah L. Barzycka, Barbara Schepanski, Kerstin |
author_sort |
Meinander, Outi |
title |
Newly identified climatically and environmentally significant high-latitude dust sources |
title_short |
Newly identified climatically and environmentally significant high-latitude dust sources |
title_full |
Newly identified climatically and environmentally significant high-latitude dust sources |
title_fullStr |
Newly identified climatically and environmentally significant high-latitude dust sources |
title_full_unstemmed |
Newly identified climatically and environmentally significant high-latitude dust sources |
title_sort |
newly identified climatically and environmentally significant high-latitude dust sources |
publishDate |
2022 |
url |
https://refubium.fu-berlin.de/handle/fub188/36862 https://doi.org/10.17169/refubium-36575 https://doi.org/10.5194/acp-22-11889-2022 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
Arctic British Columbia Canada Greenland Patagonia Svalbard |
geographic_facet |
Arctic British Columbia Canada Greenland Patagonia Svalbard |
genre |
Antarc* Antarctica Arctic Greenland Iceland Svalbard Alaska |
genre_facet |
Antarc* Antarctica Arctic Greenland Iceland Svalbard Alaska |
op_relation |
https://refubium.fu-berlin.de/handle/fub188/36862 http://dx.doi.org/10.17169/refubium-36575 doi:10.5194/acp-22-11889-2022 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17169/refubium-36575 https://doi.org/10.5194/acp-22-11889-2022 |
_version_ |
1766107592506998784 |