Dustfall in China’s western loess plateau as influenced by dust storm and haze events

Liu, L.Y.; Shi, Peijun; Gao, Shangyu; Zou, Xueyong; Erdon, Hasi; Yan, Ping; Li, X.Y.; Ta, Wanquan; Wang, J.H.; Zhang, C.L.

doi:10.1016/j.atmosenv.2004.01.003

Cited by 53 publications

(26 citation statements)

References 13 publications

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“…Atmospheric mineral dust and subsequent deposition in the ocean is an important source of iron in high-nutrient, low-chlorophyll (HNLC) oceanic regions (Mahowald et al, 2009). The intensity of dust deposition on land or ocean can exceed 100 g m −2 yr −1 (Ginoux et al, 2001;Liu et al, 2004;Zhang et al, 2010). However, the dust deposition rate over Chinese deserts has been reported to be 70 times larger than over the North Pacific Ocean (Shao, 2000).…”

Section: Atmospheric Dust Depositionmentioning

confidence: 99%

East Asian dust storm in May 2017: observations, modelling, and its influence on the Asia-Pacific region

et al. 2018

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Abstract. A severe dust storm event originated from the Gobi Desert in Central and East Asia during 2–7 May 2017. Based on Moderate Resolution Imaging Spectroradiometer (MODIS) satellite products, hourly environmental monitoring measurements from Chinese cities and East Asian meteorological observation stations, and numerical simulations, we analysed the spatial and temporal characteristics of this dust event as well as its associated impact on the Asia-Pacific region. The maximum observed hourly PM10 (particulate matter with an aerodynamic diameter ≤ 10 µm) concentration was above 1000 µg m−3 in Beijing, Tianjin, Shijiazhuang, Baoding, and Langfang and above 2000 µg m−3 in Erdos, Hohhot, Baotou, and Alxa in northern China. This dust event affected over 8.35 million km2, or 87 % of the Chinese mainland, and significantly deteriorated air quality in 316 cities of the 367 cities examined across China. The maximum surface wind speed during the dust storm was 23–24 m s−1 in the Mongolian Gobi Desert and 20–22 m s−1 in central Inner Mongolia, indicating the potential source regions of this dust event. Lidar-derived vertical dust profiles in Beijing, Seoul, and Tokyo indicated dust aerosols were uplifted to an altitude of 1.5–3.5 km, whereas simulations by the Weather Research and Forecasting with Chemistry (WRF-Chem) model indicated 20.4 and 5.3 Tg of aeolian dust being deposited respectively across continental Asia and the North Pacific Ocean. According to forward trajectory analysis by the FLEXible PARTicle dispersion (FLEXPART) model, the East Asian dust plume moved across the North Pacific within a week. Dust concentrations decreased from the East Asian continent across the Pacific Ocean from a magnitude of 103 to 10−5 µg m−3, while dust deposition intensity ranged from 104 to 10−1 mg m−2. This dust event was unusual due to its impact on continental China, the Korean Peninsula, Japan, and the North Pacific Ocean. Asian dust storms such as those observed in early May 2017 may lead to wider climate forcing on a global scale.

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Section: Atmospheric Dust Depositionmentioning

confidence: 99%

East Asian dust storm in May 2017: observations, modelling, and its influence on the Asia-Pacific region

et al. 2018

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“…Field observations on dust deposition over time intervals of days and weeks have been made using direct or indirect techniques (e.g. Gao et al, 1997;Liu et al, 2004). Such observations are valuable in determining the order of magnitude of dust deposition for given areas, but do not provide sufficient details for the conceptualization and derivation of dust-deposition theories.…”

Section: Introductionmentioning

confidence: 99%

Measurements of dust deposition velocity in a wind-tunnel experiment

2014

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Abstract. In this study, we present the results of a windtunnel experiment on dust deposition. A new method is proposed to derive dust deposition velocity from PDA (particle dynamics analysis) particle-velocity and particle-size measurements. This method has the advantage that the motions of individual dust particles are directly observed and all relevant data for computing dust deposition velocity is collected using a single instrument, and thus the measurement uncertainties are reduced. The method is used in the wind-tunnel experiment to measure dust deposition velocities for different particle sizes, wind speeds and surface conditions. For sticky-smooth wood and water surfaces, the observed dust deposition velocities are compared with the predictions using a dust deposition scheme, and the entire data set is compared with the data found in the literature. From the wind-tunnel experiments, a relatively reliable data set of dust deposition velocities is obtained, which is valuable for the development and validation of dust deposition schemes.

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“…Shuwaikh city (Kuwait), based on this study, followed Bina of India in dust fall with an average amount of 53.7 ton km -2 month -1 , which is indeed expected as it is located in an arid region, and it is located within one of the five major regions where dust originates. Areas in North and Northwest India exhibited intermediate value (21 ton km -2 -month -1 ) of dust fall (Yadav and Rajamani 2006), followed by Nagev desert (Offer and Goossen 2001), Lanzhou (Liu et al 2004), Texas (Crabtree 2005), Yazd (Naddafi et al 2006), Arizona (Crabtree 2005), California (Crabtree 2005), and Southern Nevada (Reheis and Kihl 1995), as shown in Fig. 5.…”

Section: Comparison Of Dust Fall Levels With Other Citiesmentioning

confidence: 99%

Characteristics and composition of the falling dust in urban environment

Al‐Harbi

2013

Int. J. Environ. Sci. Technol.

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The monthly total amount of dust fall, as well as its chemical and physical characteristics, was systematically investigated in Shuwaikh city, Kuwait. Dust samples were collected on a monthly basis for the entire year of 2009 and analyzed in the laboratory for water-soluble and water-insoluble matter. Water-insoluble matter represented the major portion of the total annual dust. ANOVAs showed significant temporal variation in the concentration of dust fall over the months (p \ 0.05). Higher dust deposits were encountered between June and August and ranged from 76.4 to 97.6 ± 2.5 (SD) ton km -2 month -1 , where dusty winds and low humidity are a common attribute in such arid areas. The main three soluble matter species measured are nitrate, sulfate, and chloride, and sulfate was found to be the most abundant inorganic species, ranging from 0.72 ± 0.13 to 4.1 ± 0.3 ton km -2 -month -1 . Major insoluble matter species measured are ash, silica, combustible, and tarry. Ash, silica, and combustible account for 63, 19, and 17.8 % of total insoluble dust, and 58.4, 17.7, and 16.6 % of total dust, respectively. Particle size distribution was also investigated, and results showed that dust particles[7 lm were the highest concentration of falling dust. Metrological conditions were found to play a vital role in temporal variations in falling dust.

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Dustfall in China’s western loess plateau as influenced by dust storm and haze events

Cited by 53 publications

References 13 publications

East Asian dust storm in May 2017: observations, modelling, and its influence on the Asia-Pacific region

East Asian dust storm in May 2017: observations, modelling, and its influence on the Asia-Pacific region

Measurements of dust deposition velocity in a wind-tunnel experiment

Characteristics and composition of the falling dust in urban environment

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