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; Benning, Liane G.; Cvetkovic, Bojan; Enchilik, Polina; Frolov, Denis; Gassó, Santiago; Kandler, Konrad; Kasimov, Nikolay; Kavan, Jan; King, James; Koroleva, Tatyana; Krupskaya, Viktoria; Kulmala, Markku; Kusiak, Monika; Lappalainen, Hanna K.; Laska, Michał; Lasne, Jerome; Lewandowski, Marek; Luks, Bartłomiej; McQuaid, James B.; Moroni, Beatrice; Murray, Benjamin; Möhler, Ottmar; Nawrot, Adam; Nickovic, Slobodan; O’Neill, Norman T.; Pejanovic, Goran; Popovicheva, Olga; Ranjbar, Keyvan; Romanias, Manolis; Samonova, Olga; Sanchez-Marroquin, Alberto; Schepanski, Kerstin; Semenkov, Ivan; Sharapova, Anna; Shevnina, Elena; Shi, Zongbo; Sofiev, Mikhail; Thevenet, Frédéric; Thorsteinsson, Throstur; Timofeev, Mikhail; Umo, Nsikanabasi Silas; Uppstu, Andreas; Urupina, Darya; Varga, György; Werner, Tomasz; Arnalds, Olafur; Vukovic Vimic, Ana

doi:10.5194/acp-22-11889-2022

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Newly identified climatically and environmentally significant high-latitude dust sources

Urheber*innen

Meinander, Outi
External Organizations;

Dagsson-Waldhauserova, Pavla
External Organizations;

Amosov, Pavel
External Organizations;

Aseyeva, Elena
External Organizations;

Atkins, Cliff
External Organizations;

Baklanov, Alexander
External Organizations;

Baldo, Clarissa
External Organizations;

Barr, Sarah L.
External Organizations;

Barzycka, Barbara
External Organizations;

/persons/resource/benning

Benning, Liane G.
3.5 Interface Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Cvetkovic, Bojan
External Organizations;

Enchilik, Polina
External Organizations;

Frolov, Denis
External Organizations;

Gassó, Santiago
External Organizations;

Kandler, Konrad
External Organizations;

Kasimov, Nikolay
External Organizations;

Kavan, Jan
External Organizations;

King, James
External Organizations;

Koroleva, Tatyana
External Organizations;

Krupskaya, Viktoria
External Organizations;

Kulmala, Markku
External Organizations;

Kusiak, Monika
External Organizations;

Lappalainen, Hanna K.
External Organizations;

Laska, Michał
External Organizations;

Lasne, Jerome
External Organizations;

Lewandowski, Marek
External Organizations;

Luks, Bartłomiej
External Organizations;

McQuaid, James B.
External Organizations;

Moroni, Beatrice
External Organizations;

Murray, Benjamin
External Organizations;

Möhler, Ottmar
External Organizations;

Nawrot, Adam
External Organizations;

Nickovic, Slobodan
External Organizations;

O’Neill, Norman T.
External Organizations;

Pejanovic, Goran
External Organizations;

Popovicheva, Olga
External Organizations;

Ranjbar, Keyvan
External Organizations;

Romanias, Manolis
External Organizations;

Samonova, Olga
External Organizations;

Sanchez-Marroquin, Alberto
External Organizations;

Schepanski, Kerstin
External Organizations;

Semenkov, Ivan
External Organizations;

Sharapova, Anna
External Organizations;

Shevnina, Elena
External Organizations;

Shi, Zongbo
External Organizations;

Sofiev, Mikhail
External Organizations;

Thevenet, Frédéric
External Organizations;

Thorsteinsson, Throstur
External Organizations;

Timofeev, Mikhail
External Organizations;

Umo, Nsikanabasi Silas
External Organizations;

Uppstu, Andreas
External Organizations;

Urupina, Darya
External Organizations;

Varga, György
External Organizations;

Werner, Tomasz
External Organizations;

Arnalds, Olafur
External Organizations;

Vukovic Vimic, Ana
External Organizations;

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5013461.pdf
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Zitation

Meinander, O., Dagsson-Waldhauserova, P., Amosov, P., Aseyeva, E., Atkins, C., Baklanov, A., Baldo, C., Barr, S. L., Barzycka, B., Benning, L. G., Cvetkovic, B., Enchilik, P., Frolov, D., Gassó, S., Kandler, K., Kasimov, N., Kavan, J., King, J., Koroleva, T., Krupskaya, V., Kulmala, M., Kusiak, M., Lappalainen, H. K., Laska, M., Lasne, J., Lewandowski, M., Luks, B., McQuaid, J. B., Moroni, B., Murray, B., Möhler, O., Nawrot, A., Nickovic, S., O’Neill, N. T., Pejanovic, G., Popovicheva, O., Ranjbar, K., Romanias, M., Samonova, O., Sanchez-Marroquin, A., Schepanski, K., Semenkov, I., Sharapova, A., Shevnina, E., Shi, Z., Sofiev, M., Thevenet, F., Thorsteinsson, T., Timofeev, M., Umo, N. S., Uppstu, A., Urupina, D., Varga, G., Werner, T., Arnalds, O., Vukovic Vimic, A. (2022): Newly identified climatically and environmentally significant high-latitude dust sources. - Atmospheric Chemistry and Physics, 22, 17, 11889-11930.
https://doi.org/10.5194/acp-22-11889-2022

Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013461

Zusammenfassung

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 that 1.0 % of the global dust emission originated from the high-latitude regions. About 57 % of the dust deposition in snow- and ice-covered Arctic regions was from HLD sources. In the southern HLD region, soil surface conditions are favorable for dust emission during the whole year. Climate change can cause a decrease in the duration of snow cover, retreat of glaciers, and an increase in drought, heatwave intensity, and frequency, leading to the increasing frequency of topsoil conditions favorable for dust emission, which increases the probability of dust storms. Our study provides a step forward to improve the representation of HLD in models and to monitor, quantify, and assess the environmental and climate significance of HLD.