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Volume 17 Issue 2

Apr.  2000

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2000 >  17(2): 299-310

A Study of the Relationship between Low-level Jet and Inversion Layer over an Agroforest Ecosystem in East China Plain?

  • 1.

    Eco-Environmental Research Center in Atmospheric Boundary Layer P. O. Box 003, Nanjing 211101,Eco-Environmental Research Center in Atmospheric Boundary Layer P. O. Box 003, Nanjing 211101


doi: 10.1007/s00376-000-0011-z

  • The relationship between the super-low-level jet (LLJ) and inversion layer over an agroforest ecosystem on the Huang-Huai-Hai plain in the eastern China is studied by means of a time-independent K-closure model. It is found that the intensified inversion near the surface of a luxuriantly growing agrofor-est ecosystem leads to the formation and development of the LLJ, the more intense the inversion, the strong-er is the LLJ. The critical value of inversion intensity index for the LLJ formation is 0.75℃/ 100 m, which relates to the necessary geostraphic wind velocity of 6.0 to 10 m/ s at the top level of the model The numer-ical calculations show that the roughness length of the underlying surface has considerable effects on the LLJ structure.
  • [1] Jun LI, Hongbin CHEN, Zhanqing LI, Pucai WANG, Xuehua FAN, Wenying HE, Jinqiang ZHANG, 2019: Analysis of Low-level Temperature Inversions and Their Effects on Aerosols in the Lower Atmosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 1235-1250.  doi: 10.1007/s00376-019-9018-9
    [2] LI Jun, CHEN Hongbin, Zhanqing LI, WANG Pucai, Maureen CRIBB, FAN Xuehua, 2015: Low-Level Temperature Inversions and Their Effect on Aerosol Condensation Nuclei Concentrations under Different Large-Scale Synoptic Circulations, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 898-908.  doi: 10.1007/s00376-014-4150-z
    [3] Peiling FU, Kefeng ZHU, Kun ZHAO, Bowen ZHOU, Ming XUE, 2019: Role of the Nocturnal Low-level Jet in the Formation of the Morning Precipitation Peak over the Dabie Mountains, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 15-28.  doi: 10.1007/s00376-018-8095-5
    [4] ZHAO Bingke, WU Guoxiong, YAO Xiuping, 2007: Potential Vorticity Structure and Inversion of the Cyclogenesis Over the Yangtze River and Huaihe River Valleys, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 44-54.  doi: 10.1007/s00376-007-0044-7
    [5] Yuhan LUO, Yu DU, 2023: The Roles of Low-level Jets in “21·7” Henan Extremely Persistent Heavy Rainfall Event, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 350-373.  doi: 10.1007/s00376-022-2026-1
    [6] ZHU Yali, 2012: Variations of the Summer Somali and Australia Cross-Equatorial Flows and the Implications for the Asian Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 509-518.  doi: 10.1007/s00376-011-1120-6
    [7] Peng Jiayi, Wu Rongsheng, Wang Yuan, 2002: Initiation Mechanism of Meso-β Scale Convective Systems, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 870-884.  doi: 10.1007/s00376-002-0052-6
    [8] XIONG Zhe, WANG Shuyu, ZENG Zhaomei, FU Congbin, 2003: Analysis of Simulated Heavy Rain over the Yangtze River Valley During 11-30 June 1998 Using RIEMS, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 815-824.  doi: 10.1007/BF02915407
    [9] Rudi XIA, Yali LUO, Da-Lin ZHANG, Mingxin LI, Xinghua BAO, Jisong SUN, 2021: On the Diurnal Cycle of Heavy Rainfall over the Sichuan Basin during 10–18 August 2020, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 2183-2200.  doi: 10.1007/s00376-021-1118-7
    [10] Ting WANG, Ke WEI, Jiao MA, 2021: Atmospheric Rivers and Mei-yu Rainfall in China: A Case Study of Summer 2020, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 2137-2152.  doi: 10.1007/s00376-021-1096-9
    [11] Yating ZHAO, Ming XUE, Jing JIANG, Xiao-Ming HU, Anning HUANG, 2024: Assessment of Wet Season Precipitation in the Central United States by the Regional Climate Simulation of the WRFG Member in NARCCAP and Its Relationship with Large-Scale Circulation Biases, ADVANCES IN ATMOSPHERIC SCIENCES, 41, 619-638.  doi: 10.1007/s00376-023-2353-x
    [12] Yu DU, Yian SHEN, Guixing CHEN, 2022: Influence of Coastal Marine Boundary Layer Jets on Rainfall in South China, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 782-801.  doi: 10.1007/s00376-021-1195-7
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    [18] DAI Fushan, YU Rucong, ZHANG Xuehong, YU Yongqiang, LI Jianglong, 2003: The Impact of Low-Level Cloud over the Eastern Subtropical Pacific on the "Double ITCZ" in LASG FGCM-0, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 461-474.  doi: 10.1007/BF02690804
    [19] Marco Y. T. LEUNG, Wen ZHOU, Chi-Ming SHUN, Pak-Wai CHAN, 2018: Large-scale Circulation Control of the Occurrence of Low-level Turbulence at Hong Kong International Airport, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 435-444.  doi: 10.1007/s00376-017-7118-y
    [20] Yong CHEN, Junling AN, Yele SUN, Xiquan WANG, Yu QU, Jingwei ZHANG, Zifa WANG, Jing DUAN, 2018: Nocturnal Low-level Winds and Their Impacts on Particulate Matter over the Beijing Area, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 1455-1468.  doi: 10.1007/s00376-018-8022-9
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    • Manuscript History

    Manuscript received: 10 April 2000
    Manuscript revised: 10 April 2000
    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 Study of the Relationship between Low-level Jet and Inversion Layer over an Agroforest Ecosystem in East China Plain?

    • 1. Eco-Environmental Research Center in Atmospheric Boundary Layer P. O. Box 003, Nanjing 211101,Eco-Environmental Research Center in Atmospheric Boundary Layer P. O. Box 003, Nanjing 211101
    • Manuscript received: 2000-04-10
    • Manuscript revised: 2000-04-10

    Abstract: The relationship between the super-low-level jet (LLJ) and inversion layer over an agroforest ecosystem on the Huang-Huai-Hai plain in the eastern China is studied by means of a time-independent K-closure model. It is found that the intensified inversion near the surface of a luxuriantly growing agrofor-est ecosystem leads to the formation and development of the LLJ, the more intense the inversion, the strong-er is the LLJ. The critical value of inversion intensity index for the LLJ formation is 0.75℃/ 100 m, which relates to the necessary geostraphic wind velocity of 6.0 to 10 m/ s at the top level of the model The numer-ical calculations show that the roughness length of the underlying surface has considerable effects on the LLJ structure.

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