DYNAMICAL EFFECTOF BOUNDARY LAYER CHARACTERISTICS OF TIBETAN PLATEAU ON GENERAL CIRCULATION

Zhuo Ga; Xu Xiang de; Chen Lianshou

Vol.13, NO.2, 2002

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Zhuo Ga, Xu Xiang de, Chen Lianshou. Dynamical effect of boundary layer characteristics of Tibetan Plateau on general circulation. J Appl Meteor Sci, 2002, 13(2): 163-169.

Citation:

Zhuo Ga, Xu Xiang de, Chen Lianshou. Dynamical effect of boundary layer characteristics of Tibetan Plateau on general circulation. J Appl Meteor Sci, 2002, 13(2): 163-169.

Zhuo Ga, Xu Xiang de, Chen Lianshou. Dynamical effect of boundary layer characteristics of Tibetan Plateau on general circulation. J Appl Meteor Sci, 2002, 13(2): 163-169.

Citation:

Zhuo Ga, Xu Xiang de, Chen Lianshou. Dynamical effect of boundary layer characteristics of Tibetan Plateau on general circulation. J Appl Meteor Sci, 2002, 13(2): 163-169.

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DYNAMICAL EFFECTOF BOUNDARY LAYER CHARACTERISTICS OF TIBETAN PLATEAU ON GENERAL CIRCULATION

Chinese Academy of Meteorological Sciences, Beijing 100081

Received Date: 2000-08-07
Rev Recd Date: 2001-03-25
Publish Date: 2002-04-30

Abstract

Abstract

The effect of boundary layer height (BLH) of Tibetan Plateau on atmospheric circulation is studied by the communi ty climate model (CCM3), and the observation result s of second scientific experiment on the Plateau is also combined.Evidence shows that BLH contributes to the st rong development of vert ical motion at the southeast part of the Plateau and the Yangtze River valley, along w ith air flow enforcement of convergence (divergence) at the lower (upper) level.Deepen BLH is also beneficial to remarkable increase (decrease) in cloud and precipi tation in the Yangtze River valley and the Yellow River area.
- Boundary layer height (BLH);
- Parameterization;
- Numerical simulation

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References(8)

Figures and Tables

图 1 当雄摩擦层高度及其Ekman螺线 (引自文献[3])

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图 2 (a) 控制试验中边界层高度的分布; (b) 敏感试验中边界层高度的分布 (以5月为代表, 长方形表示青藏高原的范围, 单位:m)

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图 3 夏季流场敏感试验与控制试验的偏差分布

(a)200 hPa; (b)700 hPa

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图 4 夏季敏感试验与控制试验的垂直速度偏差分布 (单位:hPa/ s)

(a)200hPa; (b)500 hPa

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图 5 夏季敏感试验与控制试验的垂直速度剖面偏差分布 (单位:hPa/ s)

(a) 沿30°N; (b) 沿90°E

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图 6 夏季云量敏感试验与控制试验的偏差分布 (单位:100 %)

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图 7 夏季降水量敏感试验与控制试验的偏差分布 (单位:mm)

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References

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[2]	程麟生, 邱崇践, 郭智昌.利用HEIFE资料优化大气边界层模式参数的数值试验.第二次青藏高原大气科学试验理论研究进展 (一), 北京:气象出版社, 1999.81-87.
[3]	徐祥德, 周明煜, 卞林根, 等.青藏高原地、气过程动力、热力结构综合物理图像.中国科学, 2001, 31(5):428-440. http://www.cnki.com.cn/Article/CJFDTOTAL-JDXK200105010.htm
[4]	Holtslag A A M and Nieuwstadt F T M.Scaling the atmospheric boundary layer.Boundary-Layer Meteorology, 1986, 36:201-209. doi: 10.1007/BF00117468
[5]	叶笃正, 高由禧, 等, 著.青藏高原气象学.北京:科学出版社, 1979.
[6]	近藤纯正[日].大气边界层的科学.北京:中国科学技术出版社, 1986.109-110.
[7]	Vogelezang D H P and Holtslag A A.Evaluation and model impacts of alternative boundary-layer height formulations.Boundary-Layer Meteorology, 1996, 81:245-269. doi: 10.1007/BF02430331
[8]	Jeffrey T Kiehl, James J Hack, Gordon B Bonan, et al.Description of the NCAR Community Climate Model (CCM3), Climate and Global Dynamics Division.National Center for Atmospheric Research, Boulder, Colorado, 1996.