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首页> 外文期刊>Environmental Science & Technology >How Much Does Large-Scale Crop Residue Burning Affect the Air Quality in Delhi?
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How Much Does Large-Scale Crop Residue Burning Affect the Air Quality in Delhi?

机译：大规模燃烧作物残渣对德里的空气质量有多大影响？

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摘要

Elevated PM_(2.5) concentrations frequently cause severe air pollution events in Delhi. Till recently, the effect of crop residue burning on the air quality in Delhi has not been fully quantified and the approaches to control the impact of fire emissions have not been effective. In this study, for the first time, we quantified the statewise contribution of post-monsoon crop residue burning in the northwestern states of India to surface PM_(2.5) concentrations in Delhi using several sensitivity experiments with the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) and FINNvl.5 fire emission inventory. Results were evaluated with ground-based observations in Delhi (21 stations), Punjab, and Haryana (14 stations). On average, ~20% of PM_(2.5) concentration in Delhi during the post-monsoon season (October-November) was found to be contributed by nonlocal fire emissions. However, on typical air pollution events, fire emissions contributed as high as 50-75% (80-120 μg/m~3) to PM_(2.5) in Delhi, highlighting the importance of both external transport and local emissions to PM_(2.5) pollution in Delhi.
机译：PM_（2.5）浓度升高经常会在德里引起严重的空气污染事件。直到最近，尚未完全量化作物残渣燃烧对德里空气质量的影响，并且控制火灾排放影响的方法尚未奏效。在这项研究中，我们首次使用天气研究和预测模型结合化学实验，定量了印度西北部州季风后作物残渣燃烧对德里表面PM_（2.5）浓度的状态贡献（WRF-Chem）和FINNvl.5火灾排放清单。通过在德里（21个站点），旁遮普邦和哈里亚纳邦（14个站点）的地面观测对结果进行了评估。在季风后季节（10月至11月），德里平均约有20％的PM_（2.5）浓度是由非本地火灾排放引起的。然而，在典型的空气污染事件中，德里的PM_（2.5）排放量高达50-75％（80-120μg/ m〜3），这突出了外部运输和本地排放对PM_（2.5）的重要性。 ）在德里的污染。

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  • 来源
    《Environmental Science & Technology》 |2020年第8期|4790-4799|共10页
  • 作者

    Santosh H. Kulkarni; Sachin D. Ghude; Chinmay Jena; Rama K. Karumuri; Baerbel Sinha; V. Sinha; Rajesh Kumar; V. K. Soni; Manoj Khare;

  • 作者单位

    Centre for Development of Advanced Computing (C-DAC) Pune 411007 Maharashtra India;

    Indian Institute of Tropical Meteorology Pune 411008 Maharashtra India;

    Indian Institute oj Tropical Meteorology Pune 411008 Maharashtra India;

    Indian Institute of Science Education and Research Mohali Punjab 140306 India;

    National Center for Atmospheric Research Boulder Colorado 80305 United States;

    India Meteorological Department New Delhi 110003 India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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