毛贤敏,曲晓波. 1997. 东北冷涡过程的能量学分析[J]. 气象学报, 55(2):230-238, doi:10.11676/qxxb1997.024
东北冷涡过程的能量学分析
ENERGETICS ANALYSIS OF A COLD VORTEX IN NORTHEAST CHINA
投稿时间:1994-09-01  修订日期:1995-10-12
DOI:10.11676/qxxb1997.024
中文关键词:  冷涡  能量平衡  涡动动能
英文关键词:Cold vortex  Energy balance  Eddy kinetic energy
基金项目:中国气象局《东北冷涡研究》课题
作者单位
毛贤敏 沈阳中心气象台, 沈阳, 110015 
曲晓波 沈阳中心气象台, 沈阳, 110015 
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中文摘要:
      对一次较典型的东北冷涡过程作了能量学分析。结果表明,冷涡涡动动能的主要收入来自涡动位能的转换(AeKe).在冷涡发展期,由外边界强气流入侵所产生的动能输入也十分重要。涡动动能的支出主要是转换为纬向气流的动能,即KeKz,其次是消耗项和成熟期以后的边界动能输出。冷涡过程涡动动能变化的绝对值以中、高空为大,但相对变率却远小于低空。AeKe主要发生在700-300hPa中空,高空则为KeAe的转换。
英文摘要:
      An analysis of the energetics of a cold vortex in Northeast China is performed. The approach is based on the computation of anenergy flow for and open at mosphericregion in which this cold vortex is the major synoptic-scale feature. Following results have been obtained. The conversionterm AeKe acts as a main source of the eddy kinetic energy of the cold vortex. When the coldvortex is in developing period, the boundary inflow of the eddy kinetic enery is also important. The major sink of the eddy kindtic energy is KeKz, the Re and the boundary out flow after the mature stage of the cold vortex are the secondary important. The absolute value of the change of the eddy kinetic energy in the middle and upper tropo sphere is larger than that in the lower tropo sphere layer, but the result is contrary to the relative variability. The AeKe occured mainly in the 700-300hPa, the contrary conversion from Ke occured mainly in the 700-300hPa, the contrary conversion form Ke into Ae is appeared in the upper at mosphere above 300hPa.
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