气候变化领域集成服务门户(CCPortal): Reactive nitrogen around the Arabian Peninsula and in the Mediterranean Sea during the 2017 AQABA ship campaign

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DOI	10.5194/acp-21-7473-2021
	Reactive nitrogen around the Arabian Peninsula and in the Mediterranean Sea during the 2017 AQABA ship campaign
	Friedrich N.; Eger P.; Shenolikar J.; Sobanski N.; Schuladen J.; DIenhart D.; Hottmann B.; Tadic I.; Fischer H.; Martinez M.; Rohloff R.; Tauer S.; Harder H.; Pfannerstill E.Y.; Wang N.; Williams J.; Brooks J.; Drewnick F.; Su H.; Li G.; Cheng Y.; Lelieveld J.; Crowley J.N.
发表日期	2021
ISSN	1680-7316
起始页码	7473
结束页码	7498
卷号	21 期号:10
英文摘要	We present shipborne measurements of NOx (-NOCNO2) and NOy (-NOxCgas- and particle-phase organic and inorganic oxides of nitrogen) in summer 2017 as part of the expedition "Air Quality and climate change in the Arabian BAsin" (AQABA). The NOx and NOz (-NOy - NOx ) measurements, made with a thermal dissociation cavity ring-down spectrometer (TD-CRDS), were used to examine the chemical mechanisms involved in the processing of primary NOx emissions and their influence on the NOy budget in chemically distinct marine environments, including the Mediterranean Sea, the Red Sea, and the Arabian Gulf, which were influenced to varying extents by emissions from shipping and oil and gas production. Complementing the TDCRDS measurements, NO and NO2 data sets from a chemiluminescence detector (CLD) were used in the analysis. In all regions, we find that NOx is strongly connected to ship emissions, both via direct emission of NO and via the formation of HONO and its subsequent photolytic conversion to NO. The role of HONO was assessed by calculating the NOx production rate from its photolysis. Mean NO2 lifetimes were 3.9 h in the Mediterranean Sea, 4.0 h in the Arabian Gulf, and 5.0 h in the Red Sea area. The cumulative loss of NO2 during the night (reaction with O3) was more important than daytime losses (reaction with OH) over the Arabian Gulf (by a factor 2.8) and over the Red Sea (factor 2.9), whereas over the Mediterranean Sea, where OH levels were high, daytime losses dominated (factor 2.5). Regional ozone production efficiencies (OPEs; calculated from the correlation between Ox and NOz, where Ox DO3CNO2) ranged from 10.5-0.9 to 19.1-1.1. This metric quantifies the relative strength of photochemical O3 production from NOx compared to the competing sequestering into NOz species. The largest values were found over the Arabian Gulf, consistent with high levels of O3 found in that region (10 90 percentiles range: 23 108 ppbv). The fractional contribution of individual NOz species to NOy exhibited a large regional variability, with HNO3 generally the dominant component (on average 33% of NOy ) with significant contributions from organic nitrates (11 %) and particulate nitrates in the PM1 size range (8 %). © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; nitrogen; nitrogen dioxide; nitrogen oxides; ozone; particulate matter; shipborne measurement; Arabian Peninsula; Arabian Sea; Indian Ocean; Mediterranean Sea; Persian Gulf; Red Sea [Indian Ocean]
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/246884
作者单位	Atmospheric Chemistry Department, Max Planck Institute for Chemistry, Mainz, 55118, Germany; Centre for Atmospheric Science, University of Manchester, Manchester, M13 9PL, United Kingdom; Particle Chemistry Department, Max Planck Institute for Chemistry, Mainz, 55118, Germany; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, 55118, Germany; Minerva Research Group, Max Planck Institute for Chemistry, Mainz, 55118, Germany
推荐引用方式 GB/T 7714	Friedrich N.,Eger P.,Shenolikar J.,et al. Reactive nitrogen around the Arabian Peninsula and in the Mediterranean Sea during the 2017 AQABA ship campaign[J],2021,21(10).
APA	Friedrich N..,Eger P..,Shenolikar J..,Sobanski N..,Schuladen J..,...&Crowley J.N..(2021).Reactive nitrogen around the Arabian Peninsula and in the Mediterranean Sea during the 2017 AQABA ship campaign.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(10).
MLA	Friedrich N.,et al."Reactive nitrogen around the Arabian Peninsula and in the Mediterranean Sea during the 2017 AQABA ship campaign".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.10(2021).