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Observation on soil water content and wind speed in Erlianhot, a dust-source area in northern China

机译:中国北方粉尘源区二连浩特市土壤水分和风速的观测

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摘要

In this manuscript, the authors investigated the spring dust storm event in northern Inner Mongolia of China and the relationship between wind speed and soil water content in dust storm events and non-dust storm events, as well as the impact of the precipitation on the soil water content variations. The seasonal variations of precipitation are remarkable, the spring precipitations account only for 15% of the total amount in the whole year. The soil water content is fairly well consistent with precipitation amount. In addition, the soil water contents show a good relationship with wind speeds, which is supported by the significantly negative correlations. But, the non-dust storm events shows no the evident relationship. It implies that soil water content can modulate dust storm activity through influencing the wetness of land surface under the same cold highs. The obvious variation in non-dust storms was the greater increase of soil water content rather than the decrease of wind speed. Both of them had variation with a weaker swing. However, for the status of dust storm, wind speeds had larger wave and soil water content shows stability and lower value. The wetness change on land surface, at least partly, is responsible for the secular reducing dust storm events in the study area. (c) 2006 Elsevier Ltd. All rights reserved.
机译:在这份手稿中,作者调查了中国内蒙古北部的春季沙尘暴事件,以及沙尘暴事件和非沙尘暴事件中风速与土壤含水量之间的关系,以及降水对土壤的影响含水量变化。降水的季节变化显着,春季降水仅占全年总量的15%。土壤含水量与降水量相当吻合。此外,土壤含水量与风速之间显示出良好的关系,这受到显着负相关的支持。但是,非沙尘暴事件没有明显的关系。这暗示着在相同的寒冷高压下,土壤含水量可以通过影响土地表面的湿度来调节沙尘暴活动。非沙尘暴的明显变化是土壤含水量增加更大,而不是风速下降。他们两个都有变化,摆动较弱。然而,对于沙尘暴的状态,风速有较大的波动,土壤含水量显示出稳定和较低的值。土地表面的湿度变化至少部分是造成研究区域长期减少沙尘暴事件的原因。 (c)2006 Elsevier Ltd.保留所有权利。

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