Asian dust events of April 1998

Husar, Rudolf B.; Tratt, David M.; Schichtel, B. A.; Falke, Stefan; Li, F.; Jaffe, Dan; Gassó, Santiago; Gill, Thomas E.; Laulainen, N. S.; Lü, Feng; Reheis, Marith C.; Chun, Youngsin; Westphal, Douglas L.; Holben, B. N.; Gueymard, Christian A.; McKendry, Ian G.; Kuring, Norman; Feldman, Gene C.; McClain, C. R.; Frouin, Robert; Merrill, J. T.; DuBois, David W.; Vignola, Frank; Murayama, Toshiyuki; Ničković, Slobodan; Wilson, W.J.; Sassen, Kenneth; Sugimoto, Naoki; Malm, William C.

doi:10.1029/2000jd900788

Cited by 806 publications

(550 citation statements)

References 40 publications

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“…Figure 5 suggests that dust from the Gobi is carried in a northeastward trajectory as it leaves the Asian continent; the plume then travels eastward and is deflected to the south near the Aleutians before it enters the western American coast. Figure 5 also shows that the time for the dust to reach the western United States is approximately five to six days, which is also in agreement with the findings from case studies by Husar et al (2001) and Szykman et al (2003).…”

Section: Resultssupporting

confidence: 80%

“…It reaches the US west coast in six days. This evolution is well captured by the satellite data and coincides with the pattern seen in a previous study (Plate 2, Husar et al, 2001).…”

Section: Methodssupporting

confidence: 72%

“…A number of studies focus on cases of intense dust events with clear signatures in the atmosphere in the western US, such as the April 1998 dust storm (Husar et al, 2001) and the April 2001 dust storm (Szykman et al, 2003). For these cases, the dust plume could be visually tracked in satellite data, and a transport time of approximately six days has been derived for both cases.…”

Section: Introductionmentioning

confidence: 99%

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The Northern Path of Asian Dust Transport from the Gobi Desert to North America

Chen

2010

Atmospheric and Oceanic Science Letters

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The aerosol index (AI) of the Total Ozone Mapping Spectrometer (TOMS) satellite data (1979−2001) was analyzed to reveal the climatological long-distance path of dust transport from Asia to North America. The AI in the west coast of the United States is highly correlated with that in the Gobi desert. Additionally, from the TOMS satellite images, it can be seen that very strong plumes advect from Asia to the west coast of North America in typical dust storm cases. When applying the sourcereceptor relationship to detect the northern dust transport path between the Gobi source region and the west coast of the United States receptor region, it is evident that the dust plume can be transported northward beyond 60°N from its source region and that it takes 5 to 6 days to reach the west coast of the United States. The cross correlation technique shown in this work is a useful tool that can be applied in other regions to give useful insights into relationships between major dust sources and downwind receptor locations by using remotely sensed dust observations.

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Section: Resultssupporting

confidence: 80%

“…It reaches the US west coast in six days. This evolution is well captured by the satellite data and coincides with the pattern seen in a previous study (Plate 2, Husar et al, 2001).…”

Section: Methodssupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

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The Northern Path of Asian Dust Transport from the Gobi Desert to North America

Chen

2010

Atmospheric and Oceanic Science Letters

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“…They may affect the radiation balance by scattering and absorbing solar and terrestrial radiation, may modify the cloud properties by acting as cloud condensation nuclei, and may influence the tropospheric chemistry by providing media for various heterogeneous reactions and by serving as carriers for the chemical species. In the Asia-Pacific region, the importance of mineral dust particles originated from the arid and semiarid land of the Asian Continent has been recognized because large amounts of dust are lifted into the free troposphere and transported for over thousands of kilometers during the spring season [Iwasaka et al, 1988;Duce, 1995;Husar et al, 2001]. The influence of the mineral dust on tropospheric chemistry is now being evaluated using chemical transport models [Dentener et al, 1996;Phadnis and Carmichael, 2000].…”

Section: Introductionmentioning

confidence: 99%

Raman lidar and aircraft measurements of tropospheric aerosol particles during the Asian dust event over central Japan: Case study on 23 April 1996

et al. 2003

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[1] The vertical distributions of tropospheric aerosol properties were measured during the Asian dust event over central Japan (35°-36°N, 136°-137°E), using a ground-based Raman lidar and aircraft-based instruments on 23 April 1996. The lidar measured enhancements of aerosol backscattering below an altitude of 4 km and between 5 and 8 km where the total aerosol linear depolarization ratio showed peaks of 12-15% and the relative humidities were $30%. The aircraft measurements showed that the aerosol particles consisted primarily of irregularly shaped mineral dusts and sea salts with a mode radius (r m ) of $1 mm and sulfates with r m $ 0.1 mm over the measured height range of 0.6-5.5 km. Electron microscopic analyses suggest that $77% of the mineral particles were coated with a solution at 1.8 km and that the fraction of coated particles decreased with height. The aerosol backscattering coefficients (b a ), calculated from the airborne optical particle counter (OPC) data, were smaller than the lidar-derived values by $30% above 3.1 km and by $44% below that altitude. The difference was attributable to the horizontal and temporal inhomogeneities of the aerosol properties between the measurement sites and to the uncertainty in b a , particularly for the coarse particles calculated from the OPC data. The aerosol depolarization ratios (d a ) estimated from the OPC data showed the same increase as those obtained with the lidar above 4.1 km. This suggests that the proportion of backscattering by coarse particles to total particles primarily controlled the d a measured with the lidar in that region.

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“…However, the complexity of the transport and sources of dust aerosol remain great challenges in determining its effects on local air pollution and the global climate system (Prasad et al, 2010;Tan et al, 2016). Up to date, quantitative understanding of individual dust events is also still incomplete (Husar et al, 2001;Liu et al, 2003). In particular, the dust budget, which is crucial for quantitatively evaluating air pollution and biogeochemical effects (Knippertz and Stuut, 2014), has not been comprehensively investigated.…”

Section: Introductionmentioning

confidence: 99%