Mass Transport of Background Asian Dust Revealed by Balloon-Borne Measurement: Dust Particles Transported during Calm Periods by Westerly from Taklamakan Desert

Iwasaka, Yasunobu; Li, Jingmin; Shi, Guangyu; Kim, Y. S.; Matsuki, Atsushi; Trochkine, D.; Yamada, Masatoshi; Zhang, Daizhou; Shen, Zhenxing; Hong, Chun-Sang

doi:10.1007/978-1-4020-6364-0_9

Cited by 7 publications

(8 citation statements)

References 20 publications

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“…The clay mineral composition of the core resembles dust from the central Asian deserts (CADs; e.g., Taklimakan Desert), which is mainly transported to the north‐central Pacific via the Prevailing Westerlies [ Iwasaka et al ., ; Shi and Liu , ]. Thus, our results indicate that the zonal wind system is the dominant transport agent in the overall dust budget of the study site.…”

Section: Discussionmentioning

confidence: 50%

“…Dust storms frequently break out in the CADs (e.g., the Taklimakan Desert) throughout the year, and the entrainment of dust into high‐level westerlies allows for the long‐range transport of material to locations as distant as Greenland [ Bory et al ., , ; Iwasaka et al ., ; Shi and Liu , ]. In contrast, dust storms in the EADs primarily occur in spring when the northwesterly winter monsoon prevails.…”

Section: Discussionmentioning

confidence: 99%

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Sr‐Nd isotope composition and clay mineral assemblages in eolian dust from the central Philippine Sea over the last 600 kyr: Implications for the transport mechanism of Asian dust

et al. 2014

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Dust transport to the tropical/subtropical northwestern Pacific over the past 600 kyr was investigated using radiogenic isotopes ( 87 Sr/ 86 Sr and ε Nd ), together with the clay mineral composition, of eolian dust preserved in a sediment core obtained from the Philippine Sea (12°30′N, 134°60′E). These data revealed the influence of two prevailing dust sources, namely, the Asian deserts and nearby volcanic arcs (e.g., the Luzon Arc), with average contributions of around 70% and 30%, respectively, from each. The clay mineral composition of the core resembled dust from the central Asian deserts (CADs; e.g., the Taklimakan Desert) as in the north-central Pacific, but published aerosol data collected near the study site during winter/spring have the mineralogical signature of dust originating from the East Asian deserts (EADs). These data indicate that the relative contribution of EAD dust increases with the northeasterly surface winds associated with the East Asian Winter Monsoon (EAWM) during winter/spring, but the Prevailing Westerlies and Trade Winds that carry dust from the CADs is the dominant transport agent in the overall dust budget of the study site. The results of this study contradict the prevailing view that direct dust transport by the EAWM winds in spring dominates the annual flux of eolian dust in the northwest Pacific.

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Section: Discussionmentioning

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Sr‐Nd isotope composition and clay mineral assemblages in eolian dust from the central Philippine Sea over the last 600 kyr: Implications for the transport mechanism of Asian dust

et al. 2014

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“…The presence of water-soluble material around dust-storm particles over Japan has been reported by previous research reports (Iwasaka et al, 2004;Iwasaka et al, 2008). Most of the dust particles are coated with water-soluble materials after their long-range transport from China to Japan, and that the dust storm particles were modified by sea-salt and/or anthropogenic pollutants and cloud process (Zhou et al, 1996).…”

Section: Allergenicmentioning

confidence: 52%

Inflammatory and degranulation effect of yellow sand on RBL-2H3 cells in relation to chemical and biological constituents

Yamada¹,

Hatta²,

Du³

et al. 2012

Ecotoxicology and Environmental Safety

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“…This picture strongly suggests the existence of Kosa-bioaerosol mixtures in the desert atmosphere. Those mixtures are possibly transported long range through combination of local circulation and westerly wind above about 5 km, as described by Iwasaka et al (2003aIwasaka et al ( , 2008. However, there are many problems to be solved, as pointed bellow, in order to know the processes controlling the mixing state of Kosa-bioaerosols and discuss the possibility of their long-range journey:…”

Section: Discussionmentioning

confidence: 99%

Mixture of Kosa (Asian dust) and bioaerosols detected in the atmosphere over the Kosa particles source regions with balloon-borne measurements: possibility of long-range transport

Iwasaka

Shi

Yamada

et al. 2009

Air Qual Atmos Health

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Long-range transport of atmospheric microbiota with Asian dust (Kosa) particles is of great concern in Northeast Asia in view of the health effect of Kosa particles on human being, disturbance of ecosystems caused through invasion of new microbe, contribution of microorganisms to biogeochemical cycle on global/regional scales, and others. Information on atmospheric microbes over the desert areas has been desired for a long time. Detection of atmospheric microbiota on the desert regions, on the base of balloon-borne measurements, has been made at Dunhuang, China (40°00′ N, 94°30′ E; east end of Taklamakan desert) in the summer of 2007. The measurements showed that microbiota mixed internally with Kosa particles were frequently floating from the ground to about 2-km heights (above sea level), and possible long-range transport of atmospheric microbiota with dust particles taking local circulations is strongly suggested, causing active mixing of atmospheric dust over the Taklamakan desert from the ground to the free troposphere where westerly jet dominates (Iwasaka et al. in J Geophys Res 108:8652, 2003a, J Geophys Res 108:8644, b). The concentration of the mixed particles of Kosa and microbiota having a size larger than about 1 μm in diameter is estimated to be about 1 particle/ cm 3 at those heights on the basis of measurements of particle concentration with an optical particle counter and analysis of particles having fluorescence light due to dye of DAPI (4′6-diamidino-2 phenylindole) with an epifluorescence microscope. The mixing situation of microbiota and Kosa particles is the important factor controlling atmospheric lifetime of floating microbiota, since the mixing state certainly can protect microbiota from stressful environments [dryness, solar ultraviolet (UV) radiation, low temperature] in the atmosphere, and therefore, it is useful to discuss the data of the first description of microbiota in the atmosphere on the Taklamakan desert.Keywords Dust particle . Microbiota (microorganism) . Desert areas in China . Balloon-borne measurement .

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Mass Transport of Background Asian Dust Revealed by Balloon-Borne Measurement: Dust Particles Transported during Calm Periods by Westerly from Taklamakan Desert

Cited by 7 publications

References 20 publications

Sr‐Nd isotope composition and clay mineral assemblages in eolian dust from the central Philippine Sea over the last 600 kyr: Implications for the transport mechanism of Asian dust

Sr‐Nd isotope composition and clay mineral assemblages in eolian dust from the central Philippine Sea over the last 600 kyr: Implications for the transport mechanism of Asian dust

Inflammatory and degranulation effect of yellow sand on RBL-2H3 cells in relation to chemical and biological constituents

Mixture of Kosa (Asian dust) and bioaerosols detected in the atmosphere over the Kosa particles source regions with balloon-borne measurements: possibility of long-range transport

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