Gobi dust storms and The Great Green Wall

Parungo, F.; Li, Zhe; Li, Xingsheng; Yang, Dongzeng; Harris, Joyce M.

doi:10.1029/94gl00879

Cited by 107 publications

(61 citation statements)

References 7 publications

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“…The climatological data at Zhangye Meteorological Station in this area show 20.3 dust storms occur in a year, on average and the maximum monthly mean frequency is 3.8 in spring (Mitsuta, 1988). Parungo et al (1994) investigated the monthly frequency of dust storms at three meteorological sta-Lions in and around the Gobi Desert.…”

Section: Dust Storms In Northwestern Chinamentioning

confidence: 99%

Two Severe Local Storms as Observed in the Arid Area of Northwest China

Mitsuta

Hayashi

Takemi

et al. 1995

Journal of the Meteorological Society of Japan

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During the observation period of the project HEIFE, two severe storms were observed. The structure of these storms in the arid area are analyzed. The scales of the two storms were different from each other.One was of the order of 10km and the other of the order of 100km; however both storms were characterised by a strong downdraft within the well developed convective cloud: a squall line and a single cumulonimbus cloud, respectively.In the squall line case, strong winds with uniform wind direction continued for about three hours, which was caused by the widening of the squall line. In the case of the single cumulonimbus cloud, the wind field was divergent owing to the downdraft at the surface. These severe storms are similar phenomena in nature to those observed all over the world.

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Section: Dust Storms In Northwestern Chinamentioning

confidence: 99%

Two Severe Local Storms as Observed in the Arid Area of Northwest China

Mitsuta

Hayashi

Takemi

et al. 1995

Journal of the Meteorological Society of Japan

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“…Dust storms frequently occur in arid and semi-arid regions and may have contributed to the desertification observed in recent decades as well as the accelerated occurrence of more arid conditions over the drylands of Asia [2]. In the arid regions of continental East Asia, dust storms frequently occur in spring [3,4]. Vegetation coverage is one of the most important factors for the reduction of dust storm occurrence [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Satellite Monitoring of Vegetation Response to Precipitation and Dust Storm Outbreaks in Gobi Desert Regions

Sofue

Hoshino

Demura³

et al. 2018

Land

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Abstract:Recently, droughts have become widespread in the Northern Hemisphere, including in Mongolia. The ground surface condition, particularly vegetation coverage, affects the occurrence of dust storms. The main sources of dust storms in the Asian region are the Taklimakan and Mongolian Gobi desert regions. In these regions, precipitation is one of the most important factors for growth of plants especially in arid and semi-arid land. The purpose of this study is to clarify the relationship between precipitation and vegetation cover dynamics over 29 years in the Gobi region. We compared the patterns between precipitation and Normalized Difference Vegetation Index (NDVI) for a period of 29 years. The precipitation and vegetation datasets were examined to investigate the trends during . Cross correlation analysis between the precipitation and the NDVI anomalies was performed. Data analysis showed that the variations of NDVI anomalies in the east region correspond well with the precipitation anomalies during this period. However, in the southwest region of the Gobi region, the NDVI had decreased regardless of the precipitation amount, especially since 2010. This result showed that vegetation in this region was more degraded than in the other areas.

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“…Dust particles that originate from the Asian continent and are transported to Japan are known as Kosa (Kai et al 1988;Yoshino 2004). The major source of dust particles suspended in the atmosphere is due to saltation bombardment, which occurs in association with strong winds (Parungo et al 1994;Shao 2000). They are called dust storms, and are caused by cold fronts accompanying synoptic-scale disturbances or thunderstorms.…”

Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation on Dust Suspension in a Convective Mixed Layer

Ito

Niino

Nakanishi

2010

SOLA

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Observations show that optical depth over desert increase during daytime when a convective mixed layer develops under a light general wind condition. This implies that dust suspension by horizontal winds associated with convective motions occur even in the absence of general winds. In the present paper, a large eddy simulation is performed to study how much dust is suspended in a convective mixed layer without a general wind. The results show that dust particle concentration in the convective mixed layer can reach on the order of 10 µg m −3, which is in reasonable agreement with observations. Tiny dust particles that have small terminal velocities are easily brought up by convective winds during daytime and remain in the atmosphere throughout night. If a similar weather continues for several days, dust particles concentration on the evening of the second day can reach 1.8 times as large as that on the evening of the first day, accordingly.

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Gobi dust storms and The Great Green Wall

Cited by 107 publications

References 7 publications

Two Severe Local Storms as Observed in the Arid Area of Northwest China

Two Severe Local Storms as Observed in the Arid Area of Northwest China

Satellite Monitoring of Vegetation Response to Precipitation and Dust Storm Outbreaks in Gobi Desert Regions

Large Eddy Simulation on Dust Suspension in a Convective Mixed Layer

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