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首页> 外文期刊>Journal of Geophysical Research, D. Atmospheres: JGR >Numerical Simulation of the Irrigation Effects on Surface Fluxes and Local Climate in Typical Mountain-Oasis-Desert Systems in the Central Asia Arid Area
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Numerical Simulation of the Irrigation Effects on Surface Fluxes and Local Climate in Typical Mountain-Oasis-Desert Systems in the Central Asia Arid Area

机译：中亚干旱地区典型山地沙漠系统灌溉效果的数值模拟及局部气候

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摘要

In this study, the Weather Research and Forecasting model was coupled with an improved Noah land surface model (WRF-Noah) where dynamic flood and drip irrigation processes were implemented firstly. We simulated the different irrigation effects on surface water-heat processes in a typical mountain-oasis-desert system in Central Asia for both wet and drought years, respectively, using the modified WRF-Noah. The modified WRF-Noah model can dynamically generate amounts of irrigation in agreement with actual values. The statistically significant decrease in the root mean square error and increase in the Pearson correlation coefficient for the 2-m temperature (T2), relative humidity (RH), latent heat flux (LE), and precipitation suggest that the modified WRF-Noah model was improved by implementing irrigation processes. During the irrigation season, flood and drip irrigation decreased the average sensible heat flux by-80.69 and-50.50 W/m~2 and T2 by 1.09 and 0.82 °C over the irrigated area and increased LE by 88.47 and 66.70 W/m~2 and RH by 6.23% and 4.65%, respectively. Throughout the domain, flood irrigation had equivalent or slightly weaker effects on near-surface temperature and humidity due to the smaller irrigated area. Both flood and drip irrigation increased precipitation throughout the domain, especially in the mountainous area, thereby accelerating the hydrological cycle in the mountain-oasis-desert system. The local oasis breeze circulation that plays a role in maintaining the oasis stability is still counteracted by the dominant background circulation even with irrigation processes. Thus, more effort should be exerted to maintain the future sustainability of the oasis.
机译：在这项研究中，天气研究和预测模型与一个改进的诺亚陆地表面模型（WRF-NOAH）联系，其中首先实施了动态洪水和滴灌过程。我们使用改进的WRF-NOAH模拟中亚典型山绿洲沙漠系统中的地表水热工艺的不同灌溉作用。修改后的WRF-NOAH模型可以在与实际值达成协议上动态地产生灌溉量。统计上显着降低了均方根误差和2米温度（T2），相对湿度（RH），潜热通量（LE）和降水的Pearson相关系数增加表明修改的WRF-NoAh模型通过实施灌溉过程得到改善。在灌溉季节期间，洪水和滴灌在灌溉面积上通过-80.69和-50.50w / m〜2和t2减少了灌溉区域的平均明智的热通量和0.82°C，并增加了88.47和66.70 w / m〜2和RH分别为6.23％和4.65％。在整个领域，由于灌溉区域较小的区域，洪水灌溉对近表面温度和湿度的影响等同或略微较弱。洪水和滴灌的灌溉均在整个领域的降水量增加，特别是在山区，从而加速了山地沙漠系统中的水文循环。在维持绿洲稳定性方面发挥作用的本地绿洲微风循环仍然是由于灌溉过程的主导背景循环仍然抵消。因此，应施加更多的努力来维持绿洲的未来可持续性。

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    Miao Zhang; Geping Luo; Xiaoshu Cao; Rafiq Hamdi; Tao Li; Peng Cai; Hui Ye; Huili He;

  • 作者单位

    Northwest Land and Resources Research Center Shaanxi Normal University Xi'an China;

    State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Xinjiang China;

    Northwest Land and Resources Research Center Shaanxi Normal University Xi'an China;

    Royal Meteorological Institute Brussels Belgium;

    Northwest Land and Resources Research Center Shaanxi Normal University Xi'an China;

    State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Xinjiang China;

    Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China;

    State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Xinjiang China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地球物理学;
  • 关键词

    Numerical Simulation; Irrigation Effects; Surface Fluxes;

    机译：数值模拟;灌溉作用;表面助熔剂;

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