【摘要】 前期地温预报后期降水的可行性研究已得到初步证实。研究表明,暴雨与下垫面热力场背景之间也存在着对应关系。夏季长江中、下游暴雨发生前下垫面地热场出现由深层向上的地热通量,当高空(850 hPa)有切变线与地热场的高地热轴线相配合时,暴雨落在地热高值区;如果地热轴线与高空切变线偏离较远,高空风强且风向垂直于地热轴线时,暴雨落区与地热区会有较大偏离,一般暴雨落在地热轴线的下风方向。更多还原

【Abstract】 The relationship between torrential rain and underlying heat field was studied by using the soil temperature data of shallow layer of meteorological stations. It shows that there is a forerunner of torrential rain on the underlying heat field, that is the upward geothermal heat flux from deep layer to earth surface. The torrential rain locates near the positive heat flux area, in the mean while, it’s also influenced by the synoptic background.更多还原