呼和浩特机场地面风的气候特征分析及预报

Analysis and forecast of climatic characteristics of surface Wind in Hohhot Airport

通过对呼和浩特机场2002-2016年地面风的气候特征进行统计,并对结果进行了原因分析。结果表明:呼和浩特机场全年盛行东偏东北风,白天西南风,夜间东北风,年平均风速2.1m/s,冬春季易出现西北地面大风;地面风除了满足典型的山谷风的特征外,还有受局地山地背风波影响的湍流乱流;地面大风出现的天气形势一般为高空槽冷锋型、蒙古气旋型、高压底部型、动量下传大风和雷暴大风;地面大风一般是高低空风场辐合辐散的环流运动强迫所造成的,一般伴随高低空急流,且整层垂直速度接近零。

The climatic characteristics of ground wind in Hohhot Airport from 2002 to 2016 were statistically analyzed, and the results were analyzed. The results show that Hohhot Airport is prevailing in the northeast of the year, with southwest winds during the day and northeast winds at night. The annual average wind speed is 2.1m/s. The northwest ground winds are prone to occur in winter and spring. The surface winds not only meet the characteristics of typical valley winds, but also There are turbulent turbulences affected by local mountainous winds;the weather conditions of the ground winds are generally high-altitude trough cold front, Mongolian cyclone type, high-pressure bottom type, momentum downwind and thunderstorm gale;ground winds are generally high and low air wind fields The convergent divergence of the circulatory motion forcing is generally accompanied by high and low altitude jets, and the vertical velocity of the entire layer is close to zero.