气候变化领域集成服务门户(CCPortal): Improved gridded ammonia emission inventory in China

CCPortal

DOI	10.5194/acp-21-15883-2021
	Improved gridded ammonia emission inventory in China
	Li B.; Chen L.; Shen W.; Jin J.; Wang T.; Wang P.; Yang Y.; Liao H.
发表日期	2021
ISSN	1680-7316
起始页码	15883
结束页码	15900
卷号	21 期号:20
英文摘要	As a major alkaline gas in the atmosphere, NH3 significantly impacts atmospheric chemistry, ecological environment, and biodiversity. Gridded NH3 emission inventories can significantly affect the accuracy of model concentrations and play a crucial role in the refinement of mitigation strategies. However, several uncertainties are still associated with existing NH3 emission inventories in China. Therefore, in this study, we focused on improving fertilizerapplication- related NH3 emission inventories. We comprehensively evaluated the dates and times of fertilizer application to the major crops that are cultivated in China, improved the spatial allocation methods for NH3 emissions from croplands with different rice types, and established a gridded NH3 emission inventory for mainland China with a resolution of 5 min×5 min in 2016. The results showed that the atmospheric NH3 emissions in mainland China amounted to 12.11 Tg, with livestock waste (44.8 %) and fertilizer application (38.6 %) being the two main NH3 emission sources in China. Obvious spatial variability in NH3 emissions was also identified, and high emissions were predominantly concentrated in North China. Further, NH3 emissions tended to be high in summer and low in winter, and the ratio for the July-January period was 3.08. Furthermore, maize and rice fertilization in summer was primarily responsible for the increase in NH3 emissions in China, and the evaluation of the spatial and temporal accuracy of the NH3 emission inventory established in this study using the WRF-Chem and groundstation- and satellite-based observations showed that it was more accurate than other inventories. © Author(s) 2021.
语种	英语
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246478
作者单位	Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China; College of Oceanography, Hohai University, Nanjing, 210098, China
推荐引用方式 GB/T 7714	Li B.,Chen L.,Shen W.,et al. Improved gridded ammonia emission inventory in China[J],2021,21(20).
APA	Li B..,Chen L..,Shen W..,Jin J..,Wang T..,...&Liao H..(2021).Improved gridded ammonia emission inventory in China.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(20).
MLA	Li B.,et al."Improved gridded ammonia emission inventory in China".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.20(2021).