Advanced Search
Impact Factor: 5.8

Volume 20 Issue 5

Sep.  2003

Article Contents
Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2003 >  20(5): 781-793

30-60-day Oscillations of Convection and Circulation Associated with the Thermal State of the Western Pacific Warm Pool during Boreal Summer

  • 1.

    School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026;LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029


doi: 10.1007/BF02915403

  • This study focuses on the characteristics of the 30 60-day oscillation (MJO) associated with theinterannual variability of the thermal state in the western Pacific warm pool. The composite resultsshow that the amplitude of MJO convection over the tropical western Pacific tends to intensify (reduce)in the WARM (COLD) case. The negative correlations between MJO convection in the WARM and inthe COLD cases are examined to be significant over most of the Asian-Pacific region. The evolutions of MJO convection and lower circulation, on the one hand, exhibit larger differences between the WARMand COLD cases, but on the other hand, display a unique feature in that a well-developed MJO cyclone(anticyclone) is anchored over the Asian-Western Pacific domain at the peak enhanced (suppressed) MJO convection phase over the western Pacific warm pool, either in the WARM or in the COLD case. Thisunique feature of MJO shows a Gill-type response of lower circulation to the convection and is inferred tobe an inherent appearance of MJO. The context in the paper suggests there may exist interactions between MJO and the interannual variability of the thermal state in the western Pacific warm pool.
  • [1] Ren Baohua, Huang Ronghui, 2002: 10-25-Day Intraseasonal Variations of Convection and Circulation Associated with Thermal State of the Western Pacific Warm Pool during Boreal Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 321-336.  doi: 10.1007/s00376-002-0025-9
    [2] LU Riyu*, DONG Huilin, SU Qin, and Hui DING, 2014: The 30-60-day Intraseasonal Oscillations over the Subtropical Western North Pacific during the Summer of 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1-7.  doi: 10.1007/s00376-013-3019-x
    [3] GAN Bolan, WU Lixin, 2012: Possible Origins of the Western Pacific Warm Pool Decadal Variability, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 169-176.  doi: 10.1007/s00376-011-0193-6
    [4] Luo Dehai, 1999: Bifurcation of Nonlinear Kelvin Wave-CISK with Conditional Heating in a Truncated Spectral Model: A Possible Mechanism of 30-60-Day Osculation at the Equator, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 279-296.  doi: 10.1007/BF02973088
    [5] Zhu Qiangen, Hu Jianglin, 1995: Effects on Asian Monsoon of Gigantic Qinghai-Xizang Plateau and Western Pacific Warm Pool, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 351-360.  doi: 10.1007/BF02656984
    [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] Xiaozhen LIN, Chaofan LI, Riyu LU, Adam A. SCAIFE, 2018: Predictable and Unpredictable Components of the Summer East Asia-Pacific Teleconnection Pattern, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 1372-1380.  doi: 10.1007/s00376-018-7305-5
    [8] Wenshou TIAN, GUO Zhenhai, YU Rucong, 2004: Treatment of LBCs in 2D Simulation of Convection over Hills, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 573-586.  doi: 10.1007/BF02915725
    [9] HONG Bo, WANG Dongxiao, 2008: Sensitivity Study of the Seasonal Mean Circulation in the Northern South China Sea, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 824-840.  doi: 10.1007/s00376-008-0824-8
    [10] YUAN Fang, CHEN Wen, ZHOU Wen, 2012: Analysis of the Role Played by Circulation in the Persistent Precipitation over South China in June 2010, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 769-781.  doi: 10.1007/s00376-012-2018-7
    [11] Yu ZHAO, Anmin DUAN, Guoxiong WU, 2018: Interannual Variability of Late-spring Circulation and Diabatic Heating over the Tibetan Plateau Associated with Indian Ocean Forcing, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 927-941.  doi: 10.1007/s00376-018-7217-4
    [12] Li Weiping, Theo Chidiezie Chineke, Liu Xin, Wu Guoxiong, 2001: Atmospheric Diabatic Heating and Summertime Circulation in Asia-Africa Area, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 257-269.  doi: 10.1007/s00376-001-0018-0
    [13] Huang Ronghui, 1994: Interactions between the 30-60 Day Oscillation, the Walker Circulation and the Convective Activities in the Tropical Western Pacific and Their Relations to the Interannual Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 11, 367-384.  doi: 10.1007/BF02658156
    [14] Debashis NATH, CHEN Wen, 2013: Investigating the Dominant Source for the Generation of Gravity Waves during Indian Summer Monsoon Using Ground-based Measurements, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 153-166.  doi: 10.1007/s00376-012-1273-y
    [15] YAN Renchang, BIAN Jianchun, 2015: Tracing the Boundary Layer Sources of Carbon Monoxide in the Asian Summer Monsoon Anticyclone Using WRF-Chem, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 943-951.  doi: 10.1007/s00376-014-4130-3
    [16] Li Chongyin, Wu Jingbo, 2000: On the Onset of the South China Sea Summer Monsoon in 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 193-204.  doi: 10.1007/s00376-000-0003-z
    [17] SHEN Xueshun, Akimasa SUMI, 2005: A High Resolution Nonhydrostatic Tropical Atmospheric Model and Its Performance, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 30-38.  doi: 10.1007/BF02930867
    [18] Minghao BI, Ke XU, Riyu LU, 2023: Monsoon Break over the South China Sea during Summer: Statistical Features and Associated Atmospheric Anomalies, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 1749-1765.  doi: 10.1007/s00376-023-2377-2
    [19] Wei TAO, Linlin ZHENG, Ying HAO, Gaoping LIU, 2023: An Extreme Gale Event in East China under the Arctic Potential Vorticity Anomaly through the Northeast China Cold Vortex, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 2169-2182.  doi: 10.1007/s00376-023-2255-y
    [20] Kalim ULLAH, GAO Shouting, 2012: Moisture Transport over the Arabian Sea Associated with Summer Rainfall over Pakistan in 1994 and 2002, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 501-508.  doi: 10.1007/s00376-011-0200-y
PDF

Get Citation+

shu
Export:  

Share Article

Article Metrics

Article Views: 1484 Times

PDF downloads: 1130 Times

Cited by: Times
  • 加载中

    • Manuscript History

    Manuscript received: 10 September 2003
    Manuscript revised: 10 September 2003
    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

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    30-60-day Oscillations of Convection and Circulation Associated with the Thermal State of the Western Pacific Warm Pool during Boreal Summer

    • 1. School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026;LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
    • Manuscript received: 2003-09-10
    • Manuscript revised: 2003-09-10

    Abstract: This study focuses on the characteristics of the 30 60-day oscillation (MJO) associated with theinterannual variability of the thermal state in the western Pacific warm pool. The composite resultsshow that the amplitude of MJO convection over the tropical western Pacific tends to intensify (reduce)in the WARM (COLD) case. The negative correlations between MJO convection in the WARM and inthe COLD cases are examined to be significant over most of the Asian-Pacific region. The evolutions of MJO convection and lower circulation, on the one hand, exhibit larger differences between the WARMand COLD cases, but on the other hand, display a unique feature in that a well-developed MJO cyclone(anticyclone) is anchored over the Asian-Western Pacific domain at the peak enhanced (suppressed) MJO convection phase over the western Pacific warm pool, either in the WARM or in the COLD case. Thisunique feature of MJO shows a Gill-type response of lower circulation to the convection and is inferred tobe an inherent appearance of MJO. The context in the paper suggests there may exist interactions between MJO and the interannual variability of the thermal state in the western Pacific warm pool.

      HTML

    Catalog

      Publish with AAS

      Contact us

      Links

      Copyright © 2018-2028 ADVANCES IN ATMOSPHERIC SCIENCES 京ICP备14024088号-7

      Supported by: Beijing Renhe Information Technology Co. Ltd  support: info@rhhz.net  

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return