气候变化领域集成服务门户(CCPortal): Observation of column-averaged molar mixing ratios of carbon dioxide in Tokyo

CCPortal

DOI	10.1016/j.aeaoa.2019.100022
	Observation of column-averaged molar mixing ratios of carbon dioxide in Tokyo
	Qin X.-C.; Nakayama T.; Matsumi Y.; Kawasaki M.; Imasu R.; Morino I.; Tanaka Y.; Ishidoya S.; Sato K.; Ohashi M.
发表日期	2019
ISSN	25901621
卷号	2
英文摘要	The metropolitan area of Tokyo, the capital of Japan, emits a large amount of carbon dioxide (CO2), an anthropogenic greenhouse gas. We measured the day-time column-averaged dry-air molar mixing ratios of atmospheric CO2, XCO2, in the central area of Tokyo during September 2014 – August 2016 using a desktop optical spectrum analyzer. The observed seasonal cycle is compared with the seasonal cycle that is observed at the Total Carbon Column Observing Network (TCCON) site in Tsukuba, which is located 60 km to the northeastern direction of Tokyo. The differences in XCO2 between the two sites are high (∼5 ppm) during December – February and low (∼0.5 ppm) during June – September. The characteristic variations of XCO2 in Tokyo are interpreted in terms of local emission sources and surface meteorological data, by referring to the variations in the concentrations of surface CO2. The sharp peaks in XCO2 at both the Tokyo and Tsukuba sites in July are interpreted in terms of local air retention in the areas, as indicated by the aircraft profiles and wind-flow forward trajectory calculations. Finally, we compare the ground-based column measurements with the top-down satellite column observations. The Author(s)
英文关键词	Emission; Megacity; Power plant; Seasonal cycle; Urban area
scopus关键词	Greenhouse gases; Meteorology; Mixing; Molar ratio; Neutron emission; Power plants; Spectrum analyzers; Column measurements; Megacities; Molar mixing ratio; Optical spectrum analyzer; Seasonal cycle; Surface meteorological data; Trajectory calculations; Urban areas; Carbon dioxide; carbon dioxide; aircraft; carbon dioxide; carbon emission; concentration (composition); megacity; metropolitan area; mixing ratio; observational method; pollutant source; power plant; seasonal variation; spatiotemporal analysis; urban agriculture; urban area; urban pollution; aircraft; Article; circadian rhythm; Japan; meteorology; optical spectrum analyzer; priority journal; seasonal variation; spectrum; Honshu; Ibaraki; Japan; Kanto; Kanto; Tokyo [Kanto]; Tsukuba
来源期刊	Atmospheric Environment: X
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176454
作者单位	Institute for Space-Earth Environmental Research (ISEE), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki, Nagasaki, 852-8521, Japan; Research Institute for Humanity and Nature, 457-4 Motoyama, Kamigamo, Kita-ku, Kyoto, Kyoto, 603-8047, Japan; Atmosphere and Ocean Research Institute (AORI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8568, Japan; National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan; Tokyo Gakugei University Senior High School, Shimouma 4-1-5, Setagaya-ku, Tokyo, 154-0002, Japan; National Institute of Advanced Industrial Science and Technology (AIST), Onogawa, Tsukuba, Ibaraki 305-8569, Japan; Department of Information Science and Biomedical Engineering, Kagoshima University, 1-21-40, Kagoshima, Kagoshima, 890-0065, Japan
推荐引用方式 GB/T 7714	Qin X.-C.,Nakayama T.,Matsumi Y.,et al. Observation of column-averaged molar mixing ratios of carbon dioxide in Tokyo[J],2019,2.
APA	Qin X.-C..,Nakayama T..,Matsumi Y..,Kawasaki M..,Imasu R..,...&Ohashi M..(2019).Observation of column-averaged molar mixing ratios of carbon dioxide in Tokyo.Atmospheric Environment: X,2.
MLA	Qin X.-C.,et al."Observation of column-averaged molar mixing ratios of carbon dioxide in Tokyo".Atmospheric Environment: X 2(2019).