气候变化领域集成服务门户(CCPortal): Spatial and temporal variations of carbon dioxide and its influencing factors [二氧化碳的时空变化规律与影响因素分析]

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DOI	10.1360/TB-2019-0022
	Spatial and temporal variations of carbon dioxide and its influencing factors [二氧化碳的时空变化规律与影响因素分析]
	He J.; Cai Y.; Qin P.
发表日期	2020
ISSN	0023074X
起始页码	194
结束页码	202
卷号	65 期号:2021-02-03
英文摘要	The increase in carbon dioxide in the atmosphere is one of the main causes of global warming. Remote sensing technology has become an important means of monitoring the distribution of carbon dioxide gas. By remotely monitoring the temporal and spatial distributions of atmospheric carbon dioxide, people can further deepen their understanding of the global carbon process. The GOSAT (Greenhouse Gases Observing SATellite) CO2 L4B concentration data from 2010 to 2015 were validated using local station atmospheric data. The spatial and temporal distributions of the carbon dioxide concentration and its variation characteristics were analyzed. Based on the total primary productivity data and human emissions of carbon dioxide data, the influencing factors of spatial variations in carbon dioxide were analyzed. The results show that: (1) The correlation coefficient between GOSATL4B data and ground-measured data is above 0.95, which indicates that the remotely acquired data have high precision and stability. (2) The spatial distribution characteristics of carbon dioxide at different atmospheric pressure heights are quite different. The variation in the long-term series mean of carbon dioxide concentration levels at 17 vertical heights was studied. The fluctuations in concentration changes at different height levels vary, and the closer to the surface, the greater the fluctuation is. The near-surface carbon dioxide concentration (975 hPa) has the largest fluctuation. When the atmospheric pressure is low (for example, 150 or 100 hPa), the high carbon dioxide concentration region is banded and concentrated near the equator. The trends in carbon dioxide concentration over land and sea surfaces are similar, and the common pattern is that the concentration of carbon dioxide has been increasing. (3) The near-surface carbon dioxide concentration (975 hPa) has clearly different spatial characteristics. There are four high-value centers across the globe: East Asia, western Europe, the US East Coast, and Central Africa. The concentration of carbon dioxide in the Northern Hemisphere near the ground is higher than that in the Southern Hemisphere. The fluctuation in the Southern Hemisphere is relatively small, and the trend is opposite that in the Northern Hemisphere. (4) The concentration of carbon dioxide showed a significant growth trend during the study period. By studying the change characteristics of the monthly global average at the 975 hPa level (approximately 300 m above sea level) from January 2010 to October 2015, it can be seen that the global CO2 concentration has been above 400 ppm for most of the year, and it is increasing each year. (5) Compared with the Southern Hemisphere, the cyclical changes in carbon dioxide concentration in the Northern Hemisphere are obvious and large, while the trend in the Southern Hemisphere is relatively stable, and the change is small. There are opposite trends in the cyclical changes in the carbon dioxide concentration in the Northern and Southern Hemispheres. When the carbon concentration in the Northern Hemisphere resides over the annual high-value area, the Southern Hemisphere has a low-value area of carbon dioxide concentration every year. In addition, the change in carbon dioxide concentration during the year is obvious with seasonal changes. This should be related to changes in vegetation phenology and different seasons in the Northern and Southern Hemispheres. (6) Four countries in East Asia (Korea, Mongolia, Japan and China) from 2010 to 2014 were selected to analyze the relationship between GPP (gross primary production) and near-surface carbon dioxide concentration. These two factors have a significant inverse correlation. When carbon dioxide is at a minimum, the GPP is at its peak, and when carbon dioxide reaches its peak, the GPP reaches a minimum. The above relationship fully indicates that terrestrial ecosystems play an important role as carbon sink contributors in the carbon cycle. (7) The relationship between atmospheric carbon dioxide and carbon dioxide data from human activities from the Global Atmospheric Research Emissions Database was analyzed. The former is significantly and positively correlated with carbon dioxide emissions caused by human activities, indicating that human activities are an important factor in the increase in carbon dioxide. © 2020, Science Press. All right reserved.
英文关键词	Carbon dioxide; Greenhouse Gases Observing SATellite; Gross primary productivity; Spatial and temporal variation
scopus关键词	Atmospheric chemistry; Atmospheric pressure; Global warming; Greenhouse gases; Photosynthesis; Phytoplankton; Remote sensing; Sea level; Spatial distribution; Atmospheric carbon dioxide; Carbon dioxide concentrations; Distribution characteristics; Greenhouse gases observing satellites; Gross primary productivity; Spatial and temporal distribution; Spatial and temporal variation; Temporal and spatial distribution; Carbon dioxide
来源期刊	Kexue Tongbao/Chinese Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176997
作者单位	College of Geomatics, Shandong University of Science and Technology, Qingdao, 266590, China; Shandong Key Laboratory of Basic Geographic Information and Digital Technology, Qingdao, 266590, China; College of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
推荐引用方式 GB/T 7714	He J.,Cai Y.,Qin P.. Spatial and temporal variations of carbon dioxide and its influencing factors [二氧化碳的时空变化规律与影响因素分析][J],2020,65(2021-02-03).
APA	He J.,Cai Y.,&Qin P..(2020).Spatial and temporal variations of carbon dioxide and its influencing factors [二氧化碳的时空变化规律与影响因素分析].Kexue Tongbao/Chinese Science Bulletin,65(2021-02-03).
MLA	He J.,et al."Spatial and temporal variations of carbon dioxide and its influencing factors [二氧化碳的时空变化规律与影响因素分析]".Kexue Tongbao/Chinese Science Bulletin 65.2021-02-03(2020).