于志良. 1998. 胶东半岛冷流降雪与海气湍流感热输送的关系[J]. 气象学报, 56(1):120-127, doi:10.11676/qxxb1998.012
胶东半岛冷流降雪与海气湍流感热输送的关系
THE RELATION BETWEEN COLD FLOW SNOWFALL AND SEA-AIR SENSIBLE HEAT TRANSPORTATION IN JIAODONG PENINSULA
投稿时间:1996-03-25  修订日期:1996-08-26
DOI:10.11676/qxxb1998.012
中文关键词:  海气温差  感热输送  冷流降雪
英文关键词:Sea-air temperature difference  Sensible heat transportation  Cold flow snow fall
基金项目:
作者单位
于志良 山东省气象科学研究所, 济南, 250031 
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中文摘要:
      为了探讨海气界面感热输送在冷流降雪形成中的作用,文中给出海气界面感热通量密度公式及感热垂直涡动输送过程,最后给出西北冷流移经渤海面时海面输送给大气的总热量计算公式。并通过实例计算和分析指出,海气温差及冷气团在陆上时的稳定度是影响输送热量的多少,进而能否形成冷流降雪的重要因素;渤海面向大气输送总热量在50J·cm-2以上或海表水温与冷空气入海前地面气温之差在11.5℃以上,胶东半岛产生冷流降雪的机率很大。
英文摘要:
      In order to know the role of sea-air sensible heat transportation in cold flow snow-fall,in this paper,the sensible heat flux density formula is given,and vertical turbulenttranspo rtation process is described.Lastly the formula for total sea-air transportation heatin the condition of northwest cold flow over Bohai sea is provided.The calculation and analysis show that sea-air temperature difference and stability of cold air mass over the land are the im por tant factors for the amount of the transportation heat and cold flow snow fall.When the transportation heat from Bohai sea to air is more than 50 J·cm-2,or sea-air temperature difference is greater than 11.5℃,the cold flow snow fall is then possibly emerged in Jiaodong peninsula.
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