Advanced Search
Article Contents

The East Asia-Western North Pacific Boreal Summer Intraseasonal Oscillation Simulated in GAMIL 1.1.1


doi: 10.1007/s00376-009-0480-7

  • We evaluate the performance of GAMIL1.1.1 in a 27-year forced simulation of the summer intraseasonal oscillation (ISO) over East Asia (EA)-western North Pacific (WNP). The assessment is based on two measures: climatological ISO (CISO) and transient ISO (TISO). CISO is the ISO component that is phase-locked to the annual cycle and describes seasonal march. TISO is the ISO component that varies year by year. The model reasonably captures many observed features of the ISO, including the stepwise northward advance of the rain belt of CISO, the dominant periodicities of TISO in both the South China Sea-Philippine Sea (SCS-PS) and the Yangtze River Basin (YRB), the northward propagation of 30--50-day TISO and the westward propagation of the 12--25-day TISO mode over the SCS-PS, and the zonal propagating features of three major TISO modes over the YRB. However, the model has notable deficiencies. These include the early onset of the South China Sea monsoon associated with CISO, too fast northward propagation of CISO from 20oN to 40oN and the absence of the CISO signal south of 10oN, the deficient eastward propagation of the 30--50-day TISO mode and the absence of a southward propagation in the YRB TISO modes. The authors found that the deficiencies in the ISO simulation are closely related to the model's biases in the mean states, suggesting that the improvement of the model mean state is crucial for realistic simulation of the intraseasonal variation.
  • [1] CAO Xi, HUANG Ping, CHEN Guanghua, CHEN Wen, 2012: Modulation of Western North Pacific Tropical Cyclone Genesis by Intraseasonal Oscillation of the ITCZ: A Statistical Analysis, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 744-754.  doi: 10.1007/s00376-012-1121-0
    [2] SUN Ying, DING Yihui, 2008: Effects of Intraseasonal Oscillation on the Anomalous East Asian Summer Monsoon During 1999, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 279-296.  doi: 10.1007/s00376-008-0279-y
    [3] Li Chongyin, Li Guilong, 1997: Evolution of Intraseasonal Oscillation over the Tropical Western Pacific / South China Sea and Its Effect to the Summer Precipitation in Southern China, ADVANCES IN ATMOSPHERIC SCIENCES, 14, 246-254.  doi: 10.1007/s00376-997-0023-z
    [4] LI Chongyin, HU Ruijin, YANG Hui, 2005: Intraseasonal Oscillation in the Tropical Indian Ocean, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 617-624.  doi: 10.1007/BF02918705
    [5] Haikun ZHAO, Chunzai WANG, Ryuji YOSHIDA, 2016: Modulation of Tropical Cyclogenesis in the Western North Pacific by the Quasi-Biweekly Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 1361-1375.  doi: 10.1007/s00376-016-5267-z
    [6] 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
    [7] Sining LING, Riyu LU, 2022: Tropical Cyclones over the Western North Pacific Strengthen the East Asia–Pacific Pattern during Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 249-259.  doi: 10.1007/s00376-021-1171-2
    [8] HU Ruijin, WEI Meng, 2013: Intraseasonal Oscillation in Global Ocean Temperature Inferred from Argo, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 29-40.  doi: 10.1007/s00376-012-2045-4
    [9] YANG Jing, BAO Qing, WANG Xiaocong, ZHOU Tianjun, 2012: The Tropical Intraseasonal Oscillation in SAMIL Coupled and Uncoupled General Circulation Models, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 529-543.  doi: 10.1007/s00376-011-1087-3
    [10] Xiaomeng SONG, Renhe ZHANG, Xinyao RONG, 2019: Influence of Intraseasonal Oscillation on the Asymmetric Decays of El Niño and La Niña, ADVANCES IN ATMOSPHERIC SCIENCES, , 779-792.  doi: 10.1007/s00376-019-9029-6
    [11] Chen Xingyue, Wang Huijun, Xue Feng, Zeng Qingcun, 2001: Intraseasonal Oscillation: the Global Coincidence and Its Relationship with ENSO Cycle, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 445-453.  doi: 10.1007/BF02919323
    [12] Yuli ZHANG, Chuanxi LIU, Yi LIU, Rui YANG, 2019: Intraseasonal Oscillation of Tropospheric Ozone over the Indian Summer Monsoon Region, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 417-430.  doi: 10.1007/s00376-018-8113-7
    [13] ZHOU Yang, JIANG Jing, Youyu LU, and HUANG Anning, 2013: Revealing the effects of the El Nio-Southern oscillation on tropical cyclone intensity over the western North Pacific from a model sensitivity study, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1117-1128.  doi: 10.1007/s00376-012-2109-5
    [14] Jie WU, Xuejie GAO, Yingmo ZHU, Ying SHI, Filippo GIORGI, 2022: Projection of the Future Changes in Tropical Cyclone Activity Affecting East Asia over the Western North Pacific Based on Multi-RegCM4 Simulations, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 284-303.  doi: 10.1007/s00376-021-0286-9
    [15] Wu Renguang, Chen Lieting, 1998: Decadal Variation of Summer Rainfall in the Yangtze-Huaihe River Valley and Its Relationship to Atmospheric Circulation Anomalies over East Asia and Western North Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 15, 510-522.  doi: 10.1007/s00376-998-0028-2
    [16] YANG Jing, BAO Qing, WANG Xiaocong, 2013: Intensified Eastward and Northward Propagation of Tropical Intraseasonal Oscillation over the Equatorial Indian Ocean in a Global Warming Scenario, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 167-174.  doi: 10.1007/s00376-012-1260-3
    [17] ZHAO Chongbo, ZHOU Tianjun, SONG Lianchun, REN Hongli, 2014: The Boreal Summer Intraseasonal Oscillation Simulated by Four Chinese AGCMs Participating in the CMIP5 Project, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1167-1180.  doi: 10.1007/s00376-014-3211-7
    [18] Li Chongyin, Long Zhenxia, Zhang Qingyun, 2001: Strong/Weak Summer Monsoon Activity over the South China Sea and Atmospheric Intraseasonal Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 1146-1160.  doi: 10.1007/s00376-001-0029-x
    [19] HU Wenting, DUAN Anmin, and WU Guoxiong, 2013: Performance of FGOALS-s2 in Simulating Intraseasonal Oscillation over the South Asian Monsoon Region, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 607-620.  doi: 10.1007/s00376-013-2156-6
    [20] Zheng HE, Pangchi HSU, Xiangwen LIU, Tongwen WU, Yingxia GAO, 2019: Factors Limiting the Forecast Skill of the Boreal Summer Intraseasonal Oscillation in a Subseasonal-to-Seasonal Model, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 104-118.  doi: 10.1007/s00376-018-7242-3

Get Citation+

Export:  

Share Article

Manuscript History

Manuscript received: 10 May 2009
Manuscript revised: 10 May 2009
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

The East Asia-Western North Pacific Boreal Summer Intraseasonal Oscillation Simulated in GAMIL 1.1.1

  • 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beiji;Department of Meteorology and International Pacific Research Center, University of Hawaii at Manoa, Honolulu, HI 96822, USA;tate Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029

Abstract: We evaluate the performance of GAMIL1.1.1 in a 27-year forced simulation of the summer intraseasonal oscillation (ISO) over East Asia (EA)-western North Pacific (WNP). The assessment is based on two measures: climatological ISO (CISO) and transient ISO (TISO). CISO is the ISO component that is phase-locked to the annual cycle and describes seasonal march. TISO is the ISO component that varies year by year. The model reasonably captures many observed features of the ISO, including the stepwise northward advance of the rain belt of CISO, the dominant periodicities of TISO in both the South China Sea-Philippine Sea (SCS-PS) and the Yangtze River Basin (YRB), the northward propagation of 30--50-day TISO and the westward propagation of the 12--25-day TISO mode over the SCS-PS, and the zonal propagating features of three major TISO modes over the YRB. However, the model has notable deficiencies. These include the early onset of the South China Sea monsoon associated with CISO, too fast northward propagation of CISO from 20oN to 40oN and the absence of the CISO signal south of 10oN, the deficient eastward propagation of the 30--50-day TISO mode and the absence of a southward propagation in the YRB TISO modes. The authors found that the deficiencies in the ISO simulation are closely related to the model's biases in the mean states, suggesting that the improvement of the model mean state is crucial for realistic simulation of the intraseasonal variation.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return