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Recent dust events and their relation to wind and precipitation in the strong dust source of Hexi Corridor in West China

机译：最近尘埃事件及其与西部河西走廊强尘源的风和降水关系

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The seasonal distributions of monthly dust events and dust depositions in the Hexi Corridor during three periods: 1986-1988, 1992-1994, 1998-2000 showed that dust outbreaks occur frequently in spring months (March, April, and May), While in Autumn months (September, October, and November) they are the least frequency. The spring dust outbreak, in the Hexi Corridor is characterized by the declining trend during the preceding eight years (1986-1993) and the increasing trend during the last eight years (1993-2000). The data of the daily TSP concentrations and monthly dust accumulations often months (January-October) in 2001 at 13 sites in four urban cities were analyzed to show that the dust events exerted a major influence on the TSP levels and dust accumulations in the urban cities in the Hexi Corridor and loess areas. Their higher TSP concentration peaks associated with high wind speed peaks were simultaneously recorded during the dust storms. Linear analysis indicate that daily mean TSP concentrations increase with the daily mean wind speed when the daily mean wind speed is more than 3 m/s, and the high TSP levels induced by the dust outbreaks are ～10 times greater than the low background TSP levels in the Hexi Corridor and the loess area.
机译：在三个时期河西走廊中每月尘埃发生和尘埃沉积的季节性分布：1986-1988,19992-1994，1998-2000表明，春季（3月，4月和5月）常时发生尘埃爆发，而在秋季几个月（9月，10月和11月）它们是最少的频率。春尘爆发，在河西走廊的特点是前八年（1986-1993）的趋势下降和过去八年（1993-2000）的日益趋势。每日TSP浓度和每月尘埃累积的数据经常在2001年（1月至10月）在四个城市城市的13个地点，表明尘埃事件对城市城市的TSP水平和尘埃积累产生了重大影响在河西走廊和黄土地区。在尘暴期间同时记录其与高风速峰相关的较高TSP浓度峰。线性分析表明，当每日平均风速超过3米/秒时，每日平均TSP浓度随着每日平均风速而增加，并且尘埃爆发引起的高TSP水平比低背景TSP水平大约10倍。在河西走廊和黄土地区。

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