Advanced Search
Article Contents

A Numerical Experiment Study for Effects of the Grassland Desertification on Summer Drought in North China


doi: 10.1007/BF02973086

  • In this paper, the summer climate of 1991 in North China is simulated by using the high- resolution regional climate model (RegCM2) and the effects of the grassland desertification on summer drought in the central and the northern parts of North China as well as Mongolia are studied. It shows that the regional climate model essentially catches the characteristics on distribution and seasonal variation of the precipitation that keep good agreement with the observation. The desertification makes precipitation in the central part of North China during its flood period de-crease obviously in July. The border of the precipitation or the soil moisture reduction in the desertification region extends about one latitude southeastward and beyond the southeast edge of the desertification. Thus, vegetation in the border region approaches desertification further. How-ever, there appears evident difference of variation of precipitation over the whole desertification region. The grassland desertification greatly changes the transfers of fluxes between land and at-mosphere. The secondary circulation or secondary circulation cells in the desertification region are excited and as a result moisture transport is changed. The variation of flux transfers between land and atmosphere as well as the vertical motion of atmosphere is closely related to that of precipita-tion.
  • [1] Zeng Xinmin, Zhao Ming, Su Bingkai, 2000: A Numerical Study on Effects of Land-Surface Heterogeneity from ‘Combined Approach’ on Atmospheric Process Part II: Coupling-Model Simulations, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 241-255.  doi: 10.1007/s00376-000-0007-8
    [2] Zeng Xinmin, Zhao Ming, Su Bingkai, 2000: A Numerical Study on Effects of Land-Surface Heterogeneity from “Combined Approach” on Atmospheric Process Part I: Principle and Method, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 103-120.  doi: 10.1007/s00376-000-0047-0
    [3] LIU Ge, JI Liren, SUN Shuqing, ZHANG Qingyun, 2010: An Inter-hemispheric Teleconnection and a Possible Mechanism for Its Formation, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 629-638.  doi: 10.1007/s00376-009-8172-x
    [4] SUN Lan, XUE Yongkang, 2004: Validation of SSiB Model over Grassland with CHeRES Field Experiment Data in 2001, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 547-556.  doi: 10.1007/BF02915722
    [5] Liu Ruizhi, 1986: A NUMERICAL EXPERIMENT OF CYCLOGENESIS AND THE DEVELOPMENT OF DISTURBANCES, ADVANCES IN ATMOSPHERIC SCIENCES, 3, 499-504.  doi: 10.1007/BF02657939
    [6] Liu Huizhi, Sang Jianguo, Zhang Boyin, Johnny C.L. Chan, Andrew Y.S.Cheng, Liu Heping, 2002: Influences of Structures on Urban Ventilation:A Numerical Experiment, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 1045-1054.  doi: 10.1007/s00376-002-0063-3
    [7] Xu Yuantai, Li Hongzhou, 1989: A Numerical Experiment of Mesolow on the Eastern Side of the Taihang Mountains, ADVANCES IN ATMOSPHERIC SCIENCES, 6, 133-136.  doi: 10.1007/BF02656924
    [8] 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
    [9] SHI Weilai, WANG Hanjie, 2003: The Regional Climate Effects of Replacing Farmland and Re-greening the Desertification Lands with Forest or Grass in West China, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 45-54.  doi: 10.1007/BF03342049
    [10] PENG Jing, DONG Wenjie, YUAN Wenping, ZHANG Yong, 2012: Responses of Grassland and Forest to Temperature and Precipitation Changes in Northeast China, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 1063-1077.  doi: 10.1007/s00376-012-1172-2
    [11] Zheng Weizhong, Ni Yunqi, 1999: Numerical Experiments for the influence of the Transition Zone Migration on Summer Climate in North China, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 367-377.  doi: 10.1007/s00376-999-0016-1
    [12] Liu Ruizhi, 1985: NUMERICAL EXPERIMENT OF SIX-LEVEL IMPLICIT PRIMITIVE MODEL, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 178-188.  doi: 10.1007/BF03179750
    [13] Ji Liren, S.Tibaldi, 1984: NUMERICAL EXPERIMENT ON THE SEASONAL TRANSITION OF GENERAL CIRCULATION OVER ASIA - PART Ⅰ, ADVANCES IN ATMOSPHERIC SCIENCES, 1, 128-149.  doi: 10.1007/BF03187624
    [14] Zhao Ming, 1988: A NUMERICAL EXPERIMENT OF THE PBL WITH GEO-STROPHIC MOMENTUM APPROXIMATION, ADVANCES IN ATMOSPHERIC SCIENCES, 5, 47-56.  doi: 10.1007/BF02657345
    [15] Chen Yuejuan, Zhang Hong, Bi Xunqiang, 1998: Numerical Experiment for the Impact of the Ozone Hole over Antarctica on the Global Climate, ADVANCES IN ATMOSPHERIC SCIENCES, 15, 300-311.  doi: 10.1007/s00376-998-0002-z
    [16] Liu Yongqiang, Ding Yihui, Li Yuehong, 1992: Transport of Water Vapor over North China during the Drought Period in Summer of 1980, ADVANCES IN ATMOSPHERIC SCIENCES, 9, 213-222.  doi: 10.1007/BF02657511
    [17] DING Yihui, LI Chongyin, LIU Yanju, 2004: Overview of the South China Sea Monsoon Experiment, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 343-360.  doi: 10.1007/BF02915563
    [18] LIAN Yi, ZHAO Bin, SHEN Baizhu, LI Shangfeng, LIU Gang, 2014: Numerical Experiments on the Impact of Spring North Pacific SSTA on NPO and Unusually Cool Summers in Northeast China, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1305-1315.  doi: 10.1007/s00376-014-3247-8
    [19] Cheng Minghu, Shi Guangyu, Zhou Xiuji, 1990: Numerical Experiment of Combined Infrared and Ultraviolet Radiation Remote Sensing to Determine the Profile and Total Content of Atmospheric Ozone, ADVANCES IN ATMOSPHERIC SCIENCES, 7, 305-319.  doi: 10.1007/BF03179763
    [20] Ding Yihui, Chao Qingchen, Zhang Yan, Gan Zijun, Zhang Xiuzhi, 1997: The South China Sea Monsoon Experiment (SCSMEX) Implementation Plan, ADVANCES IN ATMOSPHERIC SCIENCES, 14, 255-270.  doi: 10.1007/s00376-997-0024-y

Get Citation+

Export:  

Share Article

Manuscript History

Manuscript received: 10 April 1999
Manuscript revised: 10 April 1999
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

A Numerical Experiment Study for Effects of the Grassland Desertification on Summer Drought in North China

  • 1. Department of Atmospheric Sciences, Nan jing University, Nan jing 210093,Chinese Academy of Meteorological Sciences, Beijng 100081

Abstract: In this paper, the summer climate of 1991 in North China is simulated by using the high- resolution regional climate model (RegCM2) and the effects of the grassland desertification on summer drought in the central and the northern parts of North China as well as Mongolia are studied. It shows that the regional climate model essentially catches the characteristics on distribution and seasonal variation of the precipitation that keep good agreement with the observation. The desertification makes precipitation in the central part of North China during its flood period de-crease obviously in July. The border of the precipitation or the soil moisture reduction in the desertification region extends about one latitude southeastward and beyond the southeast edge of the desertification. Thus, vegetation in the border region approaches desertification further. How-ever, there appears evident difference of variation of precipitation over the whole desertification region. The grassland desertification greatly changes the transfers of fluxes between land and at-mosphere. The secondary circulation or secondary circulation cells in the desertification region are excited and as a result moisture transport is changed. The variation of flux transfers between land and atmosphere as well as the vertical motion of atmosphere is closely related to that of precipita-tion.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return