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Volume 2 Issue 3

Jul.  1985

Article Contents

STABILIZATION OF SUMMER MONSOON IN MIDDLE AND LOWER REACHES OF THE CHANGJIANG RIVER AND SEASONAL TRANSITION OF EAST-ASIAN CIRCULATION PATTERN IN EARLY SUMMER


doi: 10.1007/BF02677254

  • Using data of 850 hPa pentadal mean θsp and composite wind fields in East China, characteristics of the mean circulation are examined with summer monsoon (SM) stabilized over the Changjiang middle and lower reaches (CMLR). The onset of steady SW monsoon consistent over the CMLR is marked by a considerable northward jump of the pentadal position of the 340 K θSe isoline. This is considered as a seasonal change-over of South-China SM in its northward movement. Moreover, it is found that, when low-level SM becomes stabilized over the CMLR, an evident northward shift occurs of the high-level jet center along 115@E, indicating a certain relation between the seasonal variation of the East-Asian circulation pattern in early summer and the steadiness of SM in the CMLR.
  • [1] Wushan YING, Huiping YAN, Jing-Jia LUO, 2022: Seasonal Predictions of Summer Precipitation in the Middle-lower Reaches of the Yangtze River with Global and Regional Models Based on NUIST-CFS1.0, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 1561-1578.  doi: 10.1007/s00376-022-1389-7
    [2] Zhu Jinhong, Wang Shaowu, 2001: 80a-Oscillation of Summer Rainfall over the East Part of China and East-Asian Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 1043-1051.  doi: 10.1007/s00376-007-0024-y
    [3] Zhu Qiangen, He Jinhai, Wang Panxing, 1986: A STUDY OF CIRCULATION DIFFERENCES BETWEEN EAST-ASIAN AND INDIAN SUMMER MONSOONS WITH THEIR INTERACTION, ADVANCES IN ATMOSPHERIC SCIENCES, 3, 466-477.  doi: 10.1007/BF02657936
    [4] Chunguang CUI, Xiquan DONG, Bin WANG, Hao YANG, 2021: Phase Two of the Integrative Monsoon Frontal Rainfall Experiment (IMFRE-II) over the Middle and Lower Reaches of the Yangtze River in 2020, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 346-356.  doi: 10.1007/s00376-020-0262-9
    [5] Xiao DONG, Feng XUE, 2016: Phase Transition of the Pacific Decadal Oscillation and Decadal Variation of the East Asian Summer Monsoon in the 20th Century, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 330-338.  doi: 10.1007/s00376-015-5130-7
    [6] Yang Yan, Li Zhijin, Ji Liren, 1997: Adjoint Sensitivity Analyses on the Anomalous Circulation Features in East Asian Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 14, 111-123.  doi: 10.1007/s00376-997-0050-9
    [7] Jun Matsumoto, 1997: Seasonal Transition of Summer Rainy Season over Indochina and Adjacent Monsoon Region, ADVANCES IN ATMOSPHERIC SCIENCES, 14, 231-245.  doi: 10.1007/s00376-997-0022-0
    [8] Gong-Wang Si, Kuranoshin Kato, Takao Takeda, 1995: The Early Summer Seasonal Change of Large-scale Circulation over East Asia and Its Relation to Change of The Frontal Features and Frontal Rainfall Environment During 1991 Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 151-176.  doi: 10.1007/BF02656829
    [9] FANG Yongjie, ZHANG Yaocun, HUANG Anning, LI Bo, 2013: Seasonal and Intraseasonal Variations of East Asian Summer Monsoon Precipitation Simulated by a Regional Air-Sea Coupled Model, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 315-329.  doi: 10.1007/s00376-012-1241-6
    [10] P. L. S. Rao, 2000: The Influence of Systematic Errors on the Asian Summer Monsoon Circulation, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 576-586.  doi: 10.1007/s00376-000-0021-x
    [11] Zi-An GE, Lin CHEN, Tim LI, Lu WANG, 2022: How Frequently Will the Persistent Heavy Rainfall over the Middle and Lower Yangtze River Basin in Summer 2020 Happen under Global Warming?, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 1673-1692.  doi: 10.1007/s00376-022-1351-8
    [12] HAN Jinping, WANG Huijun, 2007: Interdecadal Variability of the East Asian Summer Monsoon in an AGCM, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 808-818.  doi: 10.1007/s00376-007-0808-0
    [13] Chen Qiying, Yu Yongqiang, Guo Yufu, 1997: Simulation of East Asian Summer Monsoon with IAP CGCM, ADVANCES IN ATMOSPHERIC SCIENCES, 14, 461-472.  doi: 10.1007/s00376-997-0064-3
    [14] Huang Ronghui, Wu Bingyi, Sung-Gil Hong, Jai-Ho Oh, 2001: Sensitivity of Numerical Simulations of the East Asian Summer Monsoon Rainfall and Circulation to Different Cumulus Parameterization Schemes, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 23-41.  doi: 10.1007/s00376-001-0002-8
    [15] Xue Feng, 2001: Interannual to Interdecadal Variation of East Asian Summer Monsoon and its Association with the Global Atmospheric Circulation and Sea Surface Temperature, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 567-575.  doi: 10.1007/s00376-001-0045-x
    [16] He Jinhai, Zhou Xueming, Ye Rongsheng, 1995: Numerical Study of Ural Blocking High’s Effect Upon Asian Summer Monsoon Circulation and East China Flood and Drought, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 361-370.  doi: 10.1007/BF02656985
    [17] Ding Yihui, Hu Jian, 1988: THE VARIATION OF THE HEAT SOURCES IN EAST CHINA IN THE EARLY SUMMER OF 1984 AND THEIR EFFECTS ON THE LARGE-SCALE CIRCULATION IN EAST ASIA, ADVANCES IN ATMOSPHERIC SCIENCES, 5, 171-180.  doi: 10.1007/BF02661291
    [18] Huang Ronghui, Li Xu, Yuan Chongguang, Lu Riyu, Moon Sung-Euii, Kim Ung-Jun, 1998: Seasonal Prediction Experiments of the Summer Droughts and Floods during the Early 1990’s in East Asia with Numerical Models, ADVANCES IN ATMOSPHERIC SCIENCES, 15, 433-446.  doi: 10.1007/s00376-998-0025-5
    [19] YAN Hongming, YANG Hui, YUAN Yuan, LI Chongyin, 2011: Relationship Between East Asian Winter Monsoon and Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 1345-1356.  doi: 10.1007/s00376-011-0014-y
    [20] Chen Wen, Hans-F. Graf, Huang Ronghui, 2000: The Interannual Variability of East Asian Winter Monsoon and Its Relation to the Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 48-60.  doi: 10.1007/s00376-000-0042-5

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Manuscript History

Manuscript received: 10 July 1985
Manuscript revised: 10 July 1985
通讯作者: 陈斌, bchen63@163.com
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STABILIZATION OF SUMMER MONSOON IN MIDDLE AND LOWER REACHES OF THE CHANGJIANG RIVER AND SEASONAL TRANSITION OF EAST-ASIAN CIRCULATION PATTERN IN EARLY SUMMER

  • 1. DepartmentofMeteorology,NanjingUniversity,Nanjing

Abstract: Using data of 850 hPa pentadal mean θsp and composite wind fields in East China, characteristics of the mean circulation are examined with summer monsoon (SM) stabilized over the Changjiang middle and lower reaches (CMLR). The onset of steady SW monsoon consistent over the CMLR is marked by a considerable northward jump of the pentadal position of the 340 K θSe isoline. This is considered as a seasonal change-over of South-China SM in its northward movement. Moreover, it is found that, when low-level SM becomes stabilized over the CMLR, an evident northward shift occurs of the high-level jet center along 115@E, indicating a certain relation between the seasonal variation of the East-Asian circulation pattern in early summer and the steadiness of SM in the CMLR.

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