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Volume 19 Issue 2

Mar.  2002

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2002 >  19(2): 321-336

10-25-Day Intraseasonal Variations of Convection and Circulation Associated with Thermal State of the Western Pacific Warm Pool during Boreal Summer

  • 1.

    Department of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,Institute of Atmospheric Physics, Chinese Aeademy of Sciences, Beijing 100029


doi: 10.1007/s00376-002-0025-9

  • This study focuses on the characteristics of 10-25-day oscillation associated with the interannual variability of the thermal state in the western Pacific warm pool. The time series of 10-25-day oscillation shows a distinct feature between warm (WARM case) and cold (COLD case) summers over the western Pacific warm pool. The significant negative relationship between the time series of 10-25-day convection anomalies in Warm and Cold cases appears over most of Asian-Pacific region manifesting the interactions between the convection on interannual and 10-25-day intraseasonal time scales. At the peak and trough stages of 10-25-day convection oscillation, a Gill-type low-level atmospheric circulation anomaly, cyclonic or anticyclonic, appears northwest of the convection anomaly. This relationship between the convection and circulation exists both in Warm case and in Cold case. However, at other stages rather than the peak and trough stages, there is no Gill-type circulation response, and the circulation anomaly shows a distinct feature between the Warm and Cold cases, although the convection oscillation exhibits a roughly similar feature.
  • [1] REN Baohua, HUANG Ronghui, 2003: 30-60-day Oscillations of Convection and Circulation Associated with the Thermal State of the Western Pacific Warm Pool during Boreal Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 781-793.  doi: 10.1007/BF02915403
    [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] 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
    [5] 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
    [6] 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
    [7] 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
    [8] 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
    [9] 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
    [10] 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
    [11] 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
    [12] 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
    [13] 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
    [14] 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
    [15] 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
    [16] 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
    [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] 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
    [19] Debashis NATH, Wen CHEN, 2016: Impact of Planetary Wave Reflection on Tropospheric Blocking over the Urals-Siberia Region in January 2008, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 309-318.  doi: 10.1007/s00376-015-5052-4
    [20] Brian HOSKINS, 2015: Potential Vorticity and the PV Perspective, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 2-9.  doi: 10.1007/s00376-014-0007-8
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    • Manuscript History

    Manuscript received: 10 March 2002
    Manuscript revised: 10 March 2002
    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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    10-25-Day Intraseasonal Variations of Convection and Circulation Associated with Thermal State of the Western Pacific Warm Pool during Boreal Summer

    • 1. Department of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,Institute of Atmospheric Physics, Chinese Aeademy of Sciences, Beijing 100029
    • Manuscript received: 2002-03-10
    • Manuscript revised: 2002-03-10

    Abstract: This study focuses on the characteristics of 10-25-day oscillation associated with the interannual variability of the thermal state in the western Pacific warm pool. The time series of 10-25-day oscillation shows a distinct feature between warm (WARM case) and cold (COLD case) summers over the western Pacific warm pool. The significant negative relationship between the time series of 10-25-day convection anomalies in Warm and Cold cases appears over most of Asian-Pacific region manifesting the interactions between the convection on interannual and 10-25-day intraseasonal time scales. At the peak and trough stages of 10-25-day convection oscillation, a Gill-type low-level atmospheric circulation anomaly, cyclonic or anticyclonic, appears northwest of the convection anomaly. This relationship between the convection and circulation exists both in Warm case and in Cold case. However, at other stages rather than the peak and trough stages, there is no Gill-type circulation response, and the circulation anomaly shows a distinct feature between the Warm and Cold cases, although the convection oscillation exhibits a roughly similar feature.

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