The elemental signature of transported Asian dust at Mauna Loa
                        observatory

Holmes, Jennifer L.; Zoller, William H.

doi:10.3402/tellusb.v48i1.15669

Cited by 25 publications

(36 citation statements)

References 18 publications

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“…The ratios of other crustal elements to Al in ADEs at Chongqing and Beijing appear to be similar to those of bulk soil, as has been found by other studies (Gatz and Prospero, 1996;Holmes and Zoller, 1996;Perry et al, 1997;Prospero et al, 2001;Guo et al, 2004;Cheng et al, 2005). Although Si/Al for both events is 30% lower than in bulk soil (3.83, Taylor and McLennan, 1995), they are quite close to those of transported dust, such as Asian dust in Zhengbeitai (1.9, Arimoto et al, 2004) and Saharan dust over the North Atlantic (2.0-2.3, Chiapello et al, 1997), Italy (2.3, Marenco et al, 2006) and America (2.0, Gatz and Prospero, 1996).…”

Section: Crustal Elements: Si Ca Mgsupporting

confidence: 69%

“…During spring, when most dust is emitted, ADEs have been found not only in midlatitude China Liu et al, 2002a;Zhang et al, 2001;Zhang et al, 2003a;Zhang et al, 2003b;Guo et al, 2004), Korea (Kim et al, 2006), and Japan (Fu et al, 2004), but also as far away as North America (Husar et al, 2001;VanCuren and Cahill, 2002), the Arctic (Bory et al, 2002), and the tropical Taiwan (Cheng et al, 2005), Hong Kong (Wai and Tanner, 2005), and the mid-Pacific (Holmes and Zoller, 1996). But the influence Q.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dust storms come to Central and Southwestern China, too: implications from a major dust event in Chongqing

Zhao

Rahn

et al. 2010

Atmos. Chem. Phys.

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Abstract. Dust storms from major Asian sources are usually carried by northwesterly or westerly winds over Northern and Southeastern China to the Pacific Ocean. These pathways leave Central and Southwestern China nearly free of incursions. But a strong dust event on 5-6 May 2005 was captured in a 15-month series of weekly filter samples of PM 2.5 at three sites in Chongqing. It illustrated that desert dust can be transported to this region, and sometimes strongly. Annual PM 2.5 and dust were similar at the three sites, but higher than in simultaneous samples in Beijing. High correlations of dust concentrations were found between the cities during spring, indicating that Asian dust affects a broader swath of China than is often realized. During the event, the concentrations of mineral dust were high at all sites (20-30 µg m −3 ; 15%-20% of PM 2.5 in Chongqing, and 15 µg m −3 ; 20%-30% of PM 2.5 in Beijing), and were part of a broader spring maximum. The proportions of crustal elements and pollution-derived components such as Pb, SO

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Section: Crustal Elements: Si Ca Mgsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Dust storms come to Central and Southwestern China, too: implications from a major dust event in Chongqing

Zhao

Rahn

et al. 2010

Atmos. Chem. Phys.

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“…Weak dust layers occur in the FT over Japan during periods with no evident dust outbreaks or even in seasons other than spring (e.g., Iwasaka et al 1983). Asian dust events have been observed at FWS (Suzuki et al 2008(Suzuki et al , 2010, MLO (Bodhaine 1995;Clarke and Charlson 1985;Darzi and Winchester 1982;Holmes and Zoller 1996;Hyslop et al 2013;Parrington et al 1983;Parrington and Zoller 1984;Perry et al 1999;VanCuren and Cahill 2002;Zieman et al 1995), LAV (Jaffe et al 2003b;VanCuren 2003;VanCuren and Cahill 2002;VanCuren et al 2005), and WHI (Leaitch et al 2009;McKendry et al 2008). A distinct seasonal cycle with a spring maximum of Ca 2+ concentration can be seen at HPO (~0.25 μg m −3 ; Fig.…”

Section: Dust and Volcanic Emissionsmentioning

confidence: 99%

A review of atmospheric chemistry observations at mountain sites

Okamoto

Tanimoto

2016

Prog. in Earth and Planet. Sci.

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Located far from anthropogenic emission sources, high-altitude mountain stations are considered to be ideal sites for monitoring climatic and environmentally important baseline changes in free tropospheric trace gases and aerosols. In addition, the observations taken at these stations are often used to study the long-range transport of dust as well as anthropogenic and biomass burning pollutants from source regions and to evaluate the performance of global and regional models. In this paper, we summarize the results from past and ongoing field measurements of atmospheric constituents at high-altitude stations across the globe, with particular emphasis on reactive trace species including tropospheric ozone, along with its precursors such as carbon monoxide, nitrogen oxides, total reactive nitrogen, and nonmethane hydrocarbons. Over the past decades, our understanding of the temporal variability and meteorological mechanisms of long-range transport has advanced in tandem with progress in instrumentation and modeling. Finally, the future needs of atmospheric chemistry observations at mountain sites are addressed.

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“…In North American dust, the Fe mass fraction of the PM 2.5 tended to be twice that of Ca or higher. Results from several elemental Asian dust characterization studies showed that the mass ratio of Fe to Ca ranges from 0.5 to 1 in Asian dust and pollution aerosols measured in China, Korea, and Hawaii (Holmes and Zoller, 1996;Krueger et al, 2004;Park et al, 2007;Shen et al, 2007;Sun et al, 2005). A dust characterization study for California's San Joaquin Valley revealed that the Fe to Ca ratio is around 2 for agricultural dust, the dominant source of dust during the Northern California wet spring.…”

Section: Sources Of Bc In Snowmentioning

confidence: 99%

Measured black carbon deposition on the Sierra Nevada snow pack and implication for snow pack retreat

et al. 2010

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Abstract. Modeling studies show that the darkening of snow and ice by black carbon deposition is a major factor for the rapid disappearance of arctic sea ice, mountain glaciers and snow packs. This study provides one of the first direct measurements for the efficient removal of black carbon from the atmosphere by snow and its subsequent deposition to the snow packs of California. The early melting of the snow packs in the Sierras is one of the contributing factors to the severe water problems in California. BC concentrations in falling snow were measured at two mountain locations and in rain at a coastal site. All three stations reveal large BC concentrations in precipitation, ranging from 1.7 ng/g to 12.9 ng/g. The BC concentrations in the air after the snow fall were negligible suggesting an extremely efficient removal of BC by snow. The data suggest that below cloud scavenging, rather than ice nuclei, was the dominant source of BC in the snow. A five-year comparison of BC, dust, and total fine aerosol mass concentrations at multiple sites reveals that the measurements made at the sampling sites were representative of large scale deposition in the Sierra Nevada. The relative concentration of iron and calcium in the mountain aerosol indicates that one-quarter to one-third of the BC may have been transported from Asia.

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The elemental signature of transported Asian dust at Mauna Loa observatory

Cited by 25 publications

References 18 publications

Dust storms come to Central and Southwestern China, too: implications from a major dust event in Chongqing

Dust storms come to Central and Southwestern China, too: implications from a major dust event in Chongqing

A review of atmospheric chemistry observations at mountain sites

Measured black carbon deposition on the Sierra Nevada snow pack and implication for snow pack retreat

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