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Volume 26 Issue 4

Jul.  2009

Article Contents
Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2009 >  26(4): 803-812

Modeling Impacts of Vegetation in Western China on the Summer Climate of Northwestern China

  • 1.

    Chinese Academy of Meteorological Sciences, Beijing 100081; Graduate University of Chinese Academy of Sciences, Beijing 100049,National Meteorological Information Centre, China Meteorological Administration, Beijing 100081,Chinese Academy of Meteorological Sciences, Beijing 100081,Chinese Academy of Meteorological Sciences, Beijing 100081


doi: 10.1007/s00376-009-9018-2

  • Using the monthly NCEP-NCAR reanalysis dataset, the monthly temperature and precipitation at surface stations of China, and the MM5 model, we examine impacts of vegetation cover changes in western China on the interdecadal variability of the summer climate over northwestern China during the past 30 years. It is found that the summer atmospheric circulation, surface air temperature, and rainfall in the 1990s were different from those in the 1970s over northwestern China, with generally more rainfall and higher temperatures in the 1990s. Associated with these changes, an anomalous wave train appears in the lower troposphere at the midlatitudes of East Asia and the low-pressure system to the north of the Tibetan Plateau is weaker. Meanwhile, the South Asian high in the upper troposphere is also located more eastward. Numerical experiments show that change of vegetation cover in western China generally forces anomalous circulations and temperatures and rainfall over these regions. This consistency between the observations and simulations implies that the interdecadal variability of the summer climate over northwestern China between the 1990s and 1970s may result from a change of vegetation cover over western China.
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    [6] Shao Hui, Qian Yongfu, 2000: Main Features of Regional Circulation Variation during Onset of the South China Sea Monsoon in 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 322-338.  doi: 10.1007/s00376-000-0013-x
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    • Manuscript History

    Manuscript received: 10 July 2009
    Manuscript revised: 10 July 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

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    Modeling Impacts of Vegetation in Western China on the Summer Climate of Northwestern China

    • 1. Chinese Academy of Meteorological Sciences, Beijing 100081; Graduate University of Chinese Academy of Sciences, Beijing 100049,National Meteorological Information Centre, China Meteorological Administration, Beijing 100081,Chinese Academy of Meteorological Sciences, Beijing 100081,Chinese Academy of Meteorological Sciences, Beijing 100081
    • Manuscript received: 2009-07-10
    • Manuscript revised: 2009-07-10

    Abstract: Using the monthly NCEP-NCAR reanalysis dataset, the monthly temperature and precipitation at surface stations of China, and the MM5 model, we examine impacts of vegetation cover changes in western China on the interdecadal variability of the summer climate over northwestern China during the past 30 years. It is found that the summer atmospheric circulation, surface air temperature, and rainfall in the 1990s were different from those in the 1970s over northwestern China, with generally more rainfall and higher temperatures in the 1990s. Associated with these changes, an anomalous wave train appears in the lower troposphere at the midlatitudes of East Asia and the low-pressure system to the north of the Tibetan Plateau is weaker. Meanwhile, the South Asian high in the upper troposphere is also located more eastward. Numerical experiments show that change of vegetation cover in western China generally forces anomalous circulations and temperatures and rainfall over these regions. This consistency between the observations and simulations implies that the interdecadal variability of the summer climate over northwestern China between the 1990s and 1970s may result from a change of vegetation cover over western China.

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