气候变化领域集成服务门户(CCPortal): Newly identified climatically and environmentally significant high-latitude dust sources

CCPortal

DOI	10.5194/acp-22-11889-2022
	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; Gasso, Santiago; Kandler, Konrad; Kasimov, Nikolay; Kavan, Jan; King, James; Koroleva, Tatyana; Krupskaya, Viktoria; Kulmala, Markku; Kusiak, Monika; Lappalainen, Hanna K.; Laska, Michal; Lasne, Jerome; Lewandowski, Marek; Luks, Bartlomiej; McQuaid, James B.; Moroni, Beatrice; Murray, Benjamin; Moehler, 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, Frederic; Thorsteinsson, Throstur; Timofeev, Mikhail; Umo, Nsikanabasi Silas; Uppstu, Andreas; Urupina, Darya; Varga, Gyorgy; Werner, Tomasz; Arnalds, Olafur; Vimic, Ana Vukovic
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	11889
结束页码	11930
卷号	22 期号:17 页码:42
英文摘要	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 > 1670000 km(2), > 560000 km(2), and > 240000 km(2), respectively. In the Arctic HLD region (>= 60 degrees N), land area with SI >= 0.5 is 5.5% (1 035 059 km(2)), area with SI >= 0.7 is 2.3% (440 804 km(2)), and area with SI >= 0.9 is 1.1% (208 701 km(2)). 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 degrees N, with a transitional HLD-source area extending at latitudes 50-58 degrees N in Eurasia and 50-55 degrees N in Canada and a cold HLD-source area including areas north of 60 degrees N in Eurasia and north of 58 degrees 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.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000853436600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273040
作者单位	Finnish Meteorological Institute; Czech University of Life Sciences Prague; Russian Academy of Sciences; Lomonosov Moscow State University; University of Birmingham; University of Leeds; University of Silesia in Katowice; Helmholtz Association; Helmholtz-Center Potsdam GFZ German Research Center for Geosciences; University System of Maryland; University of Maryland College Park; Technical University of Darmstadt; Masaryk University Brno; Universite de Montreal; University of Helsinki; Polish Academy of Sciences; Institute of Geophysics of the Polish Academy of Sciences; Universite de Lille - ISITE; Universite de Lille; University of Perugia; Helmholtz Association; Karlsruhe Institute of Technology; University of Sherbrooke; Free University of Berlin; University of Iceland; University of Iceland; Eotvos Lorand Research Network; Hungarian Academy of Sciences; Hungarian Research Centre for Astronomy & Earth Sciences; University of Belgrade; National Aeronautics & Space Administration (NASA); NASA Goddard Spa...
推荐引用方式 GB/T 7714	Meinander, Outi,Dagsson-Waldhauserova, Pavla,Amosov, Pavel,et al. Newly identified climatically and environmentally significant high-latitude dust sources[J],2022,22(17):42.
APA	Meinander, Outi.,Dagsson-Waldhauserova, Pavla.,Amosov, Pavel.,Aseyeva, Elena.,Atkins, Cliff.,...&Vimic, Ana Vukovic.(2022).Newly identified climatically and environmentally significant high-latitude dust sources.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(17),42.
MLA	Meinander, Outi,et al."Newly identified climatically and environmentally significant high-latitude dust sources".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.17(2022):42.