气候变化领域集成服务门户(CCPortal): A decade of satellite observations reveal significant increase in atmospheric formaldehyde from shipping in Indian Ocean

CCPortal

DOI	10.1016/j.atmosenv.2020.118095
	A decade of satellite observations reveal significant increase in atmospheric formaldehyde from shipping in Indian Ocean
	Gopikrishnan G.S.; Kuttippurath J.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	Atmospheric formaldehyde (HCHO) is a potential pollutant and very harmful to public health at higher doses. There are different sources for HCHO in the atmosphere, in which fuel combustion and biomass burning are predominant. The oxidation of hydroxyl radicals (OH) and methane are the chemical production pathways of HCHO in the troposphere. Here, we show a different source of HCHO emission to the atmosphere; the maritime shipping. The analyses using satellite measurements for the period 2005–2014 reveal large amounts of HCHO release along the ship routes in Indian Ocean, about 7–8 x1015 molec./cm2. This is nearly twice (150–200%) the ambient or background HCHO levels (about 4 × 1015 molec./cm2), when there is no ship emissions in the north Indian Ocean. The trend in HCHO concentrations over the Indian Ocean sea routes is about 0.008 × 1015 molec./cm2/year. The amount and the increasing trends of HCHO over the maritime routes in the north Indian Ocean are also comparable to those of the busiest sea-lanes in the world Oceans, such as the Panama Canal, Mediterranean Sea and Strait of Malacca. Our analyses, henceforth, suggest use of a better fuel for shipping to reduce the maritime pollution, as the polluted air can often be transported to the coastal regions and islands, which is a concern for public health in those regions. © 2020 Elsevier Ltd
英文关键词	Atmospheric chemistry; Canals; Formaldehyde; Fuels; Pollution; Public health; Ships; Transportation routes; Atmospheric formaldehyde; Chemical production; Maritime pollution; Mediterranean sea; North indian oceans; Satellite measurements; Satellite observations; Strait of Malacca; Oceanography; formaldehyde; atmospheric pollution; formaldehyde; hydroxyl radical; observational method; pollutant source; satellite altimetry; troposphere; air pollution; Article; atmosphere; India; Indian Ocean; measurement; Mediterranean Sea; Melaka; Panama; priority journal; public health; sea; ship; shipping; Indian Ocean
语种	英语
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169095
作者单位	CORAL, Indian Institute of Technology KharagpurWest Bengal, India
推荐引用方式 GB/T 7714	Gopikrishnan G.S.,Kuttippurath J.. A decade of satellite observations reveal significant increase in atmospheric formaldehyde from shipping in Indian Ocean[J],2021,246.
APA	Gopikrishnan G.S.,&Kuttippurath J..(2021).A decade of satellite observations reveal significant increase in atmospheric formaldehyde from shipping in Indian Ocean.Atmospheric Environment,246.
MLA	Gopikrishnan G.S.,et al."A decade of satellite observations reveal significant increase in atmospheric formaldehyde from shipping in Indian Ocean".Atmospheric Environment 246(2021).