| 基于MODIS数据的郑州市气溶胶时空变化特征分析 |
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| 引用本文： | 李诺,刘战伟,卫林勇,林康聆,窦明.基于MODIS数据的郑州市气溶胶时空变化特征分析[J].气象与环境科学,2018,41(2):32-38. |
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| 作者姓名： | 李诺 刘战伟 卫林勇 林康聆 窦明 |
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| 作者单位： | 郑州大学水利与环境实验教学中心 |
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| 摘 要： | 利用NASA发布的MODIS/Terra中Collection6数据集的MOD04_3K气溶胶光学厚度(AOD)产品,进行波段提取、重投影、剪裁等预处理,得到郑州市气溶胶光学厚度资料,对此进行统计分析,研究郑州市气溶胶光学厚度的时空变化特征。结果表明:1)2001-2016年郑州市AOD年均值整体以每年0.0033的速率增加,最大峰值出现在2011年(1.01),以2011年为界,2001-2011年呈显著增长趋势,2012-2016年呈显著下降趋势。AOD季节均值夏季的最大,春季的次之,冬季的最小。2)2001-2016年郑州市AOD夏季均值波动较大,春季均值与年均值趋势基本一致,AOD年均值和季均值与对应时间尺度的降水量有负相关关系。工业产值占GDP比重与AOD年均值呈正相关关系。3)2001-2016年郑州市AOD年均值空间分布呈现北高南低、东高西低的特征,高值区主要分布在新郑市、中牟县、郑州市区、荥阳市及巩义市的西北部。春、夏和秋季的AOD均值空间分布形态基本与年均值的分布一致,冬季的高值区集中在郑州市东南部(新郑市)。
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| 关 键 词： | 郑州市 Mann Kendall法 气溶胶光学厚度 时空分布 |
Analysis of Spatial and Temporal Characteristics of Aerosols in Zhengzhou City Based on MODIS Data |
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| Li Nuo,Liu Zhanwei,Wei Linyong,Lin Kangling,Dou Ming.Analysis of Spatial and Temporal Characteristics of Aerosols in Zhengzhou City Based on MODIS Data[J].Meteorological and Environmental Sciences,2018,41(2):32-38. |
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| Authors: | Li Nuo Liu Zhanwei Wei Linyong Lin Kangling Dou Ming |
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| Abstract: | Using the MOD04_3K aerosol optical thickness (AOD) product of the collection6 dataset of MODIS/Terra released by NASA,preprocessing such as band extraction,reprojection,and tailoring,etc.,obtained the regional aerosol optical thickness data of Zhengzhou city,which was calculated and analyzed to study the temporal and spatial characteristics of aerosol optical thickness in Zhengzhou city.The results are as follows.1)From 2001 to 2016,the annual average value of AOD in Zhengzhou city increased at a rate of 0.0033 per year.The maximum peak value was in 2011 (1.01).It was bounded by 2011 and showed significant growth from 2001 to 2011.2012 to 2016 years showed a significant downward trend.The AOD seasonal average is the highest in summer,followed by spring and winter.2)From 2001 to 2016,the summer mean value of AOD in Zhengzhou city fluctuates greatly,the trend of spring average and annual average value are basically the same,and the abundance of rainfall during the year or season has a negative correlation with the average annual value of AOD and seasonal mean value.The proportion of industrial output value to GDP is positively correlated with the annual average value of AOD.3)From 2001 to 2016,the multiyear average AOD values were higher in northern and eastern parts and lower in southern and western parts of Zhengzhou city.The high value areas are mainly distributed in Xinzheng city,Zhongmou county and Zhengzhou city,Xingyang city and the northwest of Gongyi city.The spatial distribution patterns of AOD mean in spring,summer and autumn are basically the same as the annual mean value distribution.The high value areas in winter are concentrated in the southeast of Zhengzhou city and distributed in Xinzheng city.The altitude of the underlying surface is related to the distribution of vegetation cover and AOD. |
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| Keywords: | Zhengzhou city Mann Kendall method aerosol optical depth spatial temporal distribution |
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