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Spatial and temporal patterns of air pollutants in rural and urban areas of India

机译:印度农村和城市地区空气污染物的时空分布

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摘要

In this study, we analysed spatial and temporal patterns of Suspended Paniculate Matter (SPM) concentrations across India. We have also assessed MODIS-derived aerosol optical depth (AOD) variations to characterize the air quality and relate it to SPM, NO_2 and SO_2 in different areas. In addition, the pollutant concentrations have been mapped using geospatial techniques. The results indicated significant differences in air pollutant levels across rural and urban areas. In general, districts of central and northern India had relatively higher SPM concentrations compared to southern India. Out of the top ten SPM polluted districts in India, nine were located in the state of Uttar Pradesh (UP). We observed significant correlations between the SPM and AOD at different sites. Although spatial and temporal patterns of NO_2 and SO_2 matched AOD patterns, the correlation strength (r~2) varied based on location. The causes and implications of these findings are presented.
机译:在这项研究中,我们分析了整个印度的悬浮颗粒物(SPM)浓度的时空格局。我们还评估了MODIS衍生的气溶胶光学深度(AOD)变化来表征空气质量,并将其与不同地区的SPM,NO_2和SO_2相关联。此外,已经使用地理空间技术绘制了污染物浓度图。结果表明,城乡之间空气污染物水平存在显着差异。通常,与印度南部相比,印度中部和北部地区的SPM浓度相对较高。在印度受到SPM污染的十大地区中,有九个位于北方邦(UP)。我们观察到不同位置的SPM和AOD之间存在显着的相关性。尽管NO_2和SO_2的时空格局与AOD格局相匹配,但相关强度(r〜2)随位置而变化。介绍了这些发现的原因和含义。

著录项

  • 来源
    《Environmental Pollution》 |2014年第12期|276-281|共6页
  • 作者

    Disha Sharma; U.C. Kulshrestha;

  • 作者单位

    School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India;

    School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, 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
  • 中图分类
  • 关键词

    Air quality parameters; SO_2; NO_2; SPM; AOD; Satellite data;

    机译:空气质量参数;SO_2;NO_2;SPM;AOD;卫星资料;

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