| 基于卫星观测的2005—2015年京津冀地区NO2柱浓度分布及变化趋势 |
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| 引用本文： | 游志强,尉鹏,邱雄辉,高健,朱云,王淑兰,柴发合.基于卫星观测的2005—2015年京津冀地区NO2柱浓度分布及变化趋势[J].环境科学研究,2016,29(10):1400-1407. |
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| 作者姓名： | 游志强 尉鹏 邱雄辉 高健 朱云 王淑兰 柴发合 |
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| 作者单位： | 1.华南理工大学环境与能源学院, 广东 广州 510006 ;中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012 |
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| 基金项目： | 国家自然科学基金项目(41375132,91544226)；北京市科技计划项目(Z131100006113013) |
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| 摘 要： | 为更好地了解京津冀地区NO2浓度的长期时空分布变化特征,对2005—2015年京津冀地区对流层NO2柱浓度数据进行了统计分析.结果表明,京津冀地区对流层NO2柱浓度在2005—2010年增加明显,年均复合增长率为6.8%,并在2010年达到峰值,为1 329.07×1013 mol/cm2；2010—2013年保持相对稳定；2013—2015年显著下降,降幅达26.2%.2015年NO2柱浓度为964.43×1013 mol/cm2,基本与2005年的浓度水平持平.北京地区NO2柱浓度最先开始下降并保持降低趋势,其中北京市城区降幅远大于郊区,并在2015年达到最低值,为1 647.38×1013 mol/cm2；天津市城、郊区NO2柱浓度变化相近,总体上均呈先增后减的趋势,并且均在2010年达到峰值,分别为2 686.96×1013、2 019.36×1013 mol/cm2；而河北省西南部(石家庄、邢台、邯郸市)在近两年降幅最为明显,均在35.0%以上.京津冀对流层NO2柱浓度呈由南向北递减的空间分布趋势,高值区主要分布于京津唐一带以及河北省南部沿太行山一带.研究显示,虽然近年来京津冀地区NO2柱浓度降幅明显,但相比于周边地区仍面临较大的减排压力.
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| 关 键 词： | NO2 对流层柱浓度 卫星观测 京津冀地区 |
| 收稿时间： | 2016/4/8 0:00:00 |
| 修稿时间： | 2016/6/8 0:00:00 |
Spatial and Temporal Variation of Vertical Column Density of Tropospheric NO2 over the Beijing-Tianjin-Hebei Region based on Satellite Observation during 2005-2015 |
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| YOU Zhiqiang,WEI Peng,QIU Xionghui,GAO Jian,ZHU Yun,WANG Shulan and CHAI Fahe.Spatial and Temporal Variation of Vertical Column Density of Tropospheric NO2 over the Beijing-Tianjin-Hebei Region based on Satellite Observation during 2005-2015[J].Research of Environmental Sciences,2016,29(10):1400-1407. |
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| Authors: | YOU Zhiqiang WEI Peng QIU Xionghui GAO Jian ZHU Yun WANG Shulan and CHAI Fahe |
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| Affiliation: | College of Environment and Energy, South China University of Technology, Guangzhou 510006, China ;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China ;Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing 210044, China,State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,College of Environment and Energy, South China University of Technology, Guangzhou 510006, China,State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China and State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China |
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| Abstract: | Vertical column density data of tropospheric NO2 from 2005 to 2015 was analyzed in the Beijing-Tianjin-Hebei(BTH) region. The results showed that the vertical column density of tropospheric NO2(TroNO2) increased significantly from 2005 to 2010, with the compound growth rate of 6.8%, and peaked in 2010 at 1329.07×1013 mol/cm2. The value remained relatively steady during 2010 to 2013, and then dramatically decreased after 2013 in BTH, with a drop of 26.2%. The TroNO2 column concentration was 964.43×1013 mol/cm2 in 2015, comparable with the level in 2005. Over the last ten years, the TroNO2 column concentration was relatively low and continuously decreased in Beijing region. The drop of the TroNO2 column concentrationin in downtown was considerably larger than that in suburb, reaching its lowest value in 2015, with 1647.38×1013 mol/cm2. The trends of the TroNO2 column concentration were similar in the downtown and suburb of Tianjin, which peaked in 2010, with 2686.96×1013, 2019.36×1013 mol/cm2, respectively. The TroNO2 column concentration decreased the most in southwest Hebei Province(Shijiazhuang, Xingtai and Handan cities) during the latest two years by about 35%. The TroNO2 column concentration of BTH showed the spatial distribution of decreasing from the south to the north, and the high value areas were located in Beijing-Tianjin-Tangshan region and the southern Hebei Province(along the Taihang Mountains). Although the TroNO2 column concentrations of the high value areas dropped obviously in recent years, they still face greater pressure to reduce NOx emission compared to the surrounding areas. |
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