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Volume 15 Issue 2

Apr.  1998

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 1998 >  15(2): 247-257

A Diagnostic Study on the Relationship between the Assembling of Low Frequency Waves in the Pacific Ocean and the Abnormality of the Subtropical High

  • 1.

    Meteorological Center, Nanjing Air Force, Nanjing 210018,Air Force Institute of Meteorology, Nanjing 211101


doi: 10.1007/s00376-998-0043-3

  • By use of the filter analysis technique, the Complex Empirical Othogonal Function (CEOF) method and the ECMWF/WMO 2.5o× 2.5o grid data of the geopotential heights during the summer months in 1988, an interseasonal process that the western Pacific subtropical high (WPSH) was anomalously far to the north in the first and second ten days of July is studied. It has been found that in the western Pacific subtropical region in the first and second ten days of July, it is the continuous assembly of low frequency geopotential waves (LFGWs) that leads to the abnormality of WPSH. This abnormality emerges with the enhancement of wave assembling and ceases while the wave assembling situation disappears. The structure of the low frequency assembling waves corresponds to the struc-ture of subtropical high in its abnormal period. The effect of the assembling waves on the abnormality of subtropical high can be considered as the accumulation of disturbance energy carried by the low frequency waves from different directions in the western Pacific region.
  • [1] Lu Riyu, 2002: Indices of the Summertime Western North Pacific Subtropical High, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 1004-1028.  doi: 10.1007/s00376-002-0061-5
    [2] YANG Hui, SUN Shuqing, 2003: Longitudinal Displacement of the Subtropical High in the Western Pacific in Summer and its Influence, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 921-933.  doi: 10.1007/BF02915515
    [3] Lei WANG, Guanghua CHEN, 2018: Impact of the Spring SST Gradient between the Tropical Indian Ocean and Western Pacific on Landfalling Tropical Cyclone Frequency in China, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 682-688.  doi: 10.1007/s00376-017-7078-2
    [4] He Jinhai, Zhou Bing, Wen Min, Li Feng, 2001: Vertical Circulation Structure, lnterannual Variation Features and Variation Mechanism of Western Pacific Subtropical High, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 497-510.  doi: 10.1007/s00376-001-0040-2
    [5] Wang Shaowu, Cai Jingning, Mu Qiaozhen, Xie Zhihui, Zhu Jinhong, Gong Daoyi, 2002: Modeling and Diagnostic Studies on the Variations of the Subtropical High over the Western Pacific from 1880 to 1999, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 1148-1152.  doi: 10.1007/s00376-002-0072-2
    [6] Xinyu LI, Riyu LU, Gen LI, 2021: Different Configurations of Interannual Variability of the Western North Pacific Subtropical High and East Asian Westerly Jet in Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 931-942.  doi: 10.1007/s00376-021-0339-0
    [7] Shuai HU, Tianjun ZHOU, Bo WU, Xiaolong CHEN, 2023: Seasonal Prediction of the Record-Breaking Northward Shift of the Western Pacific Subtropical High in July 2021, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 410-427.  doi: 10.1007/s00376-022-2151-x
    [8] YANG Hui, SUN Shuqing, 2005: The Characteristics of Longitudinal Movement of the Subtropical High in the Western Pacific in the Pre-rainy Season in South China, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 392-400.  doi: 10.1007/BF02918752
    [9] Huang Ronghui, Lu Li, 1989: Numerical Simulation of the Relationship between the Anomaly of Subtropical High over East Asia and the Convective Activities in the Western Tropical Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 6, 202-214.  doi: 10.1007/BF02658016
    [10] Sun Shuqing, Ying Ming, 1999: Subtropical High Anomalies over the Western Pacific and Its Relations to the Asian Monsoon and SST Anomaly, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 559-568.  doi: 10.1007/s00376-999-0031-2
    [11] Shumin CHEN, Weibiao LI, Zhiping WEN, Mingsen ZHOU, Youyu LU, Yu-Kun QIAN, Haoya LIU, Rong FANG, 2018: Variations in High-frequency Oscillations of Tropical Cyclones over the Western North Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 423-434.  doi: 10.1007/s00376-017-7060-z
    [12] Anmin DUAN, Ruizao SUN, Jinhai HE, 2017: Impact of Surface Sensible Heating over the Tibetan Plateau on the Western Pacific Subtropical High: A Land-Air-Sea Interaction Perspective, ADVANCES IN ATMOSPHERIC SCIENCES, 34, 157-168.  doi: 10.1007/s00376-016-6008-z
    [13] Feng XUE, Xiao DONG, Fangxing FAN, 2018: Anomalous Western Pacific Subtropical High during El Niño Developing Summer in Comparison with Decaying Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 360-367.  doi: 10.1007/s00376-017-7046-x
    [14] Feng XUE, Fangxing FAN, 2016: Anomalous Western Pacific Subtropical High during Late Summer in Weak La Niña Years: Contrast between 1981 and 2013, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 1351-1360.  doi: 10.1007/s00376-016-5281-1
    [15] Xinyu LI, Riyu LU, 2021: Decadal Change in the Influence of the Western North Pacific Subtropical High on Summer Rainfall over the Yangtze River Basin in the Late 1970s, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 1823-1834.  doi: 10.1007/s00376-021-1051-9
    [16] ZHAO Tianbao, FU Congbin, 2009: Intercomparison of the Summertime Subtropical High from the ERA-40 and NCEP/NCAR Reanalysis over East Eurasia and the western North Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 119-131.  doi: 10.1007/s00376-009-0119-8
    [17] Zhang Qihe, Yu Shihua, 1990: Diagnosis of the Medium-Range Variation of the Subtropical High over the Western Pacific during a Meiyu Process by Three-Dimensional E－P Flux, ADVANCES IN ATMOSPHERIC SCIENCES, 7, 463-474.  doi: 10.1007/BF03342565
    [18] FU Weiwei, ZHU Jiang, ZHOU Guangqing, WANG Huijun, 2005: A Comparison Study of Tropical Pacific Ocean State Estimation: Low-Resolution Assimilation vs. High-Resolution Simulation, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 212-219.  doi: 10.1007/BF02918510
    [19] Ruifen ZHAN, Yuqing WANG, Yihui DING, 2022: Impact of the Western Pacific Tropical Easterly Jet on Tropical Cyclone Genesis Frequency over the Western North Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 235-248.  doi: 10.1007/s00376-021-1103-1
    [20] XU Xiangde, ZHOU Li, ZHANG Shengjun, MIAO Qiuju, 2003: Characteristics of the Correlation between Regional Water Vapor Transport along with the Convective Action and Variation of the Pacific Subtropical High in 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 269-283.  doi: 10.1007/s00376-003-0013-8
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    • Manuscript History

    Manuscript received: 10 April 1998
    Manuscript revised: 10 April 1998
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    A Diagnostic Study on the Relationship between the Assembling of Low Frequency Waves in the Pacific Ocean and the Abnormality of the Subtropical High

    • 1. Meteorological Center, Nanjing Air Force, Nanjing 210018,Air Force Institute of Meteorology, Nanjing 211101
    • Manuscript received: 1998-04-10
    • Manuscript revised: 1998-04-10

    Abstract: By use of the filter analysis technique, the Complex Empirical Othogonal Function (CEOF) method and the ECMWF/WMO 2.5o× 2.5o grid data of the geopotential heights during the summer months in 1988, an interseasonal process that the western Pacific subtropical high (WPSH) was anomalously far to the north in the first and second ten days of July is studied. It has been found that in the western Pacific subtropical region in the first and second ten days of July, it is the continuous assembly of low frequency geopotential waves (LFGWs) that leads to the abnormality of WPSH. This abnormality emerges with the enhancement of wave assembling and ceases while the wave assembling situation disappears. The structure of the low frequency assembling waves corresponds to the struc-ture of subtropical high in its abnormal period. The effect of the assembling waves on the abnormality of subtropical high can be considered as the accumulation of disturbance energy carried by the low frequency waves from different directions in the western Pacific region.

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