| 台风暴雨积云参数化试验 |
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| 引用本文： | 谭锐志,林元弼.台风暴雨积云参数化试验[J].大气科学,1994,18(3):331-340. |
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| 作者姓名： | 谭锐志 林元弼 |
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| 作者单位： | 广州热带海洋气象研究所,广州 510080 |
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| 摘 要： | 本文使用半预报方法检验了五种积云参数化方案，并讨论了它们在台风暴雨中的适用性，结果表明:Arakawa-Schubert方案能最好地描述台风暴雨过程Q1和Q２的垂直结构，该方案所要求的云功函数准平衡假设在台风暴雨过程中能够成立；而Kuo-type方案由于假设了加热和增温分别线性正比于Ｔs-Ｔavg-和qs－q(avg)，不能很好地描绘实际Q1和Q２的垂直结构，但当改进云温的求取法后，参数化结果会得到较大改善。计算还表明多元回归方案显示出比Kuo(1974)方案更好些的结果，这种具有简便计算优点的参数化方案如果能作些相适性改进，可望能应用于台风暴雨过程。另外，我们还分析了台风暴雨过程不同阶段的积云演变特征。
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| 关 键 词： | 台风暴雨 积云参数化 半预报方法 |
A Test of Cumulus Parameterization Schemes for the Typhoon Rainfall |
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| Tan Ruizhi and Lin Yuanbi.A Test of Cumulus Parameterization Schemes for the Typhoon Rainfall[J].Chinese Journal of Atmospheric Sciences,1994,18(3):331-340. |
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| Authors: | Tan Ruizhi and Lin Yuanbi |
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| Abstract: | In this poper, five cumulus parameterization schemes with the send-prognostic method are tcsted and their availability in the typhoon rainfall system is discussed. It is found that the Arakawa-Schubert scheme can well describe the vertical structure of Q1 and Q2. The quasi-equilibrum hypothesis of the cloud work function in this scheme is verified. However, tbe Kuo-type schemes could not describe the vertical structures of Q 1 and Q2, mainly due to the hypothesis that the heating and moistening were,respectively, linearly proportional to T3 - T and q8 - q But the parameterhahon results were much better when the approach for finding cloud temperature was improved. It is shown that the multiple regression scheme by Krishnamurti gave better results than Kuo's (1974) scheme. The former one,which is casy to calculate, seems promising to be uscd in typhoon rainfall systems ifmeliorated properly.We have also analyzed the evolutional characteristics of cumulus during different periods of the ty-Phoon rainfall. |
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| Keywords: | typhoon rainfall cumulus parameterization semiprognostic method |
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