JI Yuping,DENG Xiaobo,HUANG Qihong,et al.Spatial and Temporal Distribution of Atmospheric CO inSouthwest China based on Satellite Data[J].Journal of Chengdu University of Information Technology,2020,35(06):616-620.[doi:10.16836/j.cnki.jcuit.2020.06.006]
基于卫星数据的西南地区大气CO 时空分布特征的分析
- Title:
- Spatial and Temporal Distribution of Atmospheric CO in Southwest China based on Satellite Data
- Keywords:
- satellite remote sensing; Southwest China; atmospheric CO; TROPOMI; spatial and temporal distribution
- 分类号:
- TP79
- 文献标志码:
- A
- 摘要:
- 大气中的一氧化碳(CO)是影响气候变化的重要大气微量气体,研究大气中的CO浓度对环境质量的监测有着重要意义。利用对流层观测仪(TROPOMI)L2级产品的CO柱总量数据,得出中国区域在2019年的大气CO分布特征,CO高值在中国东部沿海地区,西部较低。结合西南地区5省区市:西藏自治区、云南省、四川省、重庆市、贵州省的总人口和地区生产总值数据,分析中国西南区域在2019年的CO时空分布和季节变化特征。结果表明:西藏自治区和四川西部CO为最低值,在2019年的变化不明显,四川东部和重庆市CO含量最高,云南、贵州省最高值在春季,夏秋季降低。选取西南地区中的青藏高原东南部和四川盆地2019年的CO月均值,四川盆地为青藏高原的2～3倍,变化趋势明显,青藏高原东南部一年内趋于平稳。
- Abstract:
- Carbon monoxide(CO)is an important atmospheric trace gas that affects climate change in the atmosphere. The study of CO concentration in the atmosphere is of great significance to the monitoring of environmental quality.With the total CO column data of TROPOMI L2 products,the atmospheric CO distribution characteristics in China in 2019 are obtained. The high CO values are in the eastern coastal areas of China and lower in the west. Based on the data of the total population and gross regional product of the five provinces and municipalities in the southwest: Tibet Autonomous Region,Yunnan Province,Sichuan Province,Chongqing City,and Guizhou Province,the temporal and spatial distribution of CO in Southwest China in 2019 and its seasonal changes are analyzed.The results show that: The lowest values were found in Tibet Autonomous Region and western Sichuan province,and the changes in 2019 are not obvious.The CO total column was highest in eastern Sichuan and Chongqing,and Yunnan and Guizhou have the highest values in spring,and it falls in summer and autumn.The southeast of the Qinghai-Tibet Plateau in the southwestern region and the Sichuan Basin were selected to calculate the monthly mean values of CO in 2019. The monthly average values of the Sichuan Basin were 2 to 3 times that of the the southeastern Qinghai-Tibet Plateau, and the change trend was obvious, while in the southeastern Qinghai-Tibet Plateau was stable within a year.
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备注/Memo
收稿日期:2020-05-28 基金项目:四川省科技计划重点研发资助项目(2019YFG0126)