| 基于GOSAT卫星的中国CO2浓度时空特征分析 |
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| 引用本文： | 葛钰洁,肖钟湧.基于GOSAT卫星的中国CO2浓度时空特征分析[J].中国环境监测,2022,38(5):96-108. |
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| 作者姓名： | 葛钰洁 肖钟湧 |
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| 作者单位： | 集美大学港口与海岸工程学院, 福建 厦门 361021;兰州大学资源环境学院, 甘肃 兰州 730000 |
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| 基金项目： | 集美大学国家基金培育计划项目资助项目(ZP2021019);福建省自然科学基金计划资助项目(2021J01839) |
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| 摘 要： | 采用温室气体观测卫星(GOSAT) 傅里叶变换光谱仪(FTS)发布的CO2柱浓度L3级别数据集产品,利用TCCON地基站点的CO2柱浓度数据对卫星遥感数据进行验证,分析中国CO2柱浓度时空变化特征及其影响因素。研究结果表明,GOSAT卫星的CO2柱浓度产品精度较高,线性回归的r2为0.99,线性方程斜率为0.98,平均偏差为0.11 mg/L。中国CO2柱浓度呈现逐年增长的趋势,存在12个月的周期性季节性变化。2010、2020年区域年平均CO2柱浓度分别约为389.30、412.62 mg/L,增长了23.32 mg/L,年平均增长率大约为0.58%。中国区域大气CO2柱浓度的月变化存在明显的时空差异,最大值和最小值分别出现在4月和8月,2020年4月和8月的区域平均值分别为415.09、409.13 mg/L。中国区域CO2柱浓度从东部沿海向西部逐级递减,且呈现明显的季节性变化,夏季高值主要集中在东南部沿海地区,冬季高值主要集中在华北地区。
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| 关 键 词： | GOSAT卫星|CO2柱浓度|卫星遥感|时空分析|中国 |
| 收稿时间： | 2021/8/12 0:00:00 |
| 修稿时间： | 2022/5/30 0:00:00 |
Analysis on the Spatial and Temporal Characteristics of CO2 Concentration in China Based on GOSAT Satellite |
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| GE Yujie,XIAO Zhongyong.Analysis on the Spatial and Temporal Characteristics of CO2 Concentration in China Based on GOSAT Satellite[J].Environmental Monitoring in China,2022,38(5):96-108. |
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| Authors: | GE Yujie XIAO Zhongyong |
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| Institution: | College of Harbour and Coastal Engineering, Jimei University, Xiamen 361021, China;College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | The CO2 column concentration L3 data set product released by the Fourier Transform Spectrometer(FTS) of the greenhouse gas observation satellite(GOSAT) was used.The satellite remote sensing data were verified by using the CO2 column concentration data observed by the ground-based observation of TCCON.The temporal and spatial variation characteristics of CO2 column concentration in China and the influencing factors were analyzed.The results showed that the CO2 column concentration data set of GOSAT satellite had high accuracy.The r2 of linear regression was 0.99,and the slope of linear equation was 0.98,and the average deviation was 0.11 mg/L.The CO2 column concentration in China was increasing year by year with a periodic seasonal variation of 12 months.The regional average annual CO2 column concentration in 2010 and 2020 was about 389.30 and 412.62 mg/L,respectively.During this period,the CO2 column concentration increased by 23.32 mg/L and the average annual growth rate was about 0.58%.The monthly variation of atmospheric CO2 column concentration in China had obvious temporal and spatial differences.The maximum and minimum appeared in April and August respectively.The multi-yearly regional average in April and August were 415.09 and 409.13 mg/L in 2020.The spatial distribution of CO2 column concentration decreased gradually from the eastern coast to the western China with obvious seasonal variation.The summer high value was mainly concentrated in the southeast coast,and the winter high value was mainly concentrated in northern China. |
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| Keywords: | GOSAT satellite|CO2 column concentration|remote sensing|temporal and spatial analysis|China |
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