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使用中尺度生态气象模式,用数值研究方法和理论分析方法研究灌溉和发育良好的大面积小麦对中纬度干旱地区中尺度大气边界层结构的影响。研究表明,由于植物的蒸腾和潮湿土壤蒸发作用,引起在植物地区上空显著的温度和湿度场扰动。在该扰动引起的水平气压梯度力的作用下,产生和发展了一个中尺度环流,其风向在边界层下部是指向干燥的裸壤。在复杂的山区地形周围的平原和高原种植小麦,白天中尺度边界层结构是这个中尺度环流与上坡风环流相互作用的结果。文中还着重研究了植物尺度变化的气象效应。
Using mesoscale ecometeorological models, the effects of irrigated and well-developed large-area wheat on the mesoscale atmospheric boundary layer structure in mid-latitude arid regions are investigated using numerical and theoretical methods. Studies have shown that due to transpiration of plants and evapotranspiration of humid soils, significant temperature and humidity disturbances over plant areas are caused. Under the action of the horizontal pressure gradient force caused by the disturbance, a mesoscale circulation is created and developed with the direction of the wind pointing to the dry soils in the lower part of the boundary layer. The daytime mesoscale boundary layer structure of wheat planted on plains and plateaus around the complex mountainous terrain is the result of the interaction between this mesoscale and uphill wind circulation. The paper also focuses on the meteorological effects of plant scale changes.