Temporal and spatial variation for vertical column density of tropospheric NO2 over the Yangtze River Delta from 2005 to 2013
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摘要: 利用2005年1月-2013年12月臭氧监测仪传感器DOMINO version 2.0产品数据,对长江三角洲对流层二氧化氮(NO2)柱浓度的时空分布变化特征展开分析,得到以下结论:① 9 a间长三角地区二氧化氮柱浓度平均值为9.721015 moleccm-2,年均复合增长率为2.10%,年增长值为0.261015 moleccm-2。长三角地区作为外向型经济的代表,二氧化氮柱浓度变化趋势与国内经济发展状况十分契合。② 9 a间长三角地区二氧化氮柱浓度基本呈现冬季>秋季>春季>夏季的趋势,异常的低温干旱气候会使二氧化氮柱浓度明显提升。③研究区二氧化氮柱浓度水平受人为活动和气候的共同作用影响,但就直接作用程度来看,以人为活动排放为主导。④ 9 a间苏北和浙西南中部地区二氧化氮柱浓度一直呈持续增长势态,而苏南和浙东北地区正趋于平稳,长三角核心区域的经济产业结构调整,以及大量工业项目的北迁和南移是背后的主要驱动力。图4表3参43Abstract: Product data from DOMINO version 2.0 for January 2005 to December 2013 was used to analyze the temporal and spatial variation for vertical column density of tropospheric NO2 (TroNO2) over the Yangtze River Delta of China. Results showed that (1) the mean annual TroNO2 vertical column density was 9.72 1015 moleccm-2, the compound growth rate was 2.10%, and growth was 2.6 1014 moleccm-2. (2) Concentration of the TroNO2 column over 9 years indicated a maximum concentration in winter, followed by autumn, spring, and summer. (3) Primarily human activity but also climate influenced the TroNO2 column concentration. (4) The TroNO2 column concentration in northern Jiangsu and the central parts of southwest Zhejiang steadily increased over nine years; whereas it remained stable in southern Jiangsu and northeast Zhejiang. Thus, even with abnormally low temperatures and an arid climate contributing to the apparent increase in the Yangtze River Delta, the TroNO2 column concentration seemed acceptable for domestic economic development. [Ch, 4 fig. 3 tab. 43 ref.]
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.05.006
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