NDLI: The influence of cloud chemistry on HO x and NO x in the moderately polluted marine boundary layer : a 1-D modelling study

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The influence of cloud chemistry on HO x and NO x in the moderately polluted marine boundary layer : a 1-D modelling study

Content Provider	Semantic Scholar
Author	Williams, Jason E. Dentener, Frank Berg, Aswin Van Den
Copyright Year	2002
Abstract	A 1-D marine stratocumulus cloud model has been supplemented with a comprehensive and up-to-date aqueous phase chemical mechanism for the purpose of assessing the impact that the presence of clouds has on gas phase HOx, NOx and O3 budgets in the marine boundary layer. The simulations presented here indicate that cloud may act as a heterogeneous source of HONO g. The conversion of HNO4(g) at moderate pH ( ∼ 4.5) is responsible for this, and, to a lesser extent, the photolysis of nitrate (NO −3 ). The effect of introducing deliquescent aerosol on the simulated increase of HONOg is negligible. The most important consequences of this elevation in HONOg are that, in the presence of cloud, gas phase concentrations of NO x species increase by a factor of 2, which minimises the simulated decrease in O 3(g), and results in a regeneration of OH g. This partly compensates for the removal of OH g by direct phase transfer into the cloud and may have important implications regarding the oxidising capacity of the marine boundary layer.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.atmos-chem-phys.net/2/39/2002/acp-2-39-2002.pdf
Alternate Webpage(s)	http://hal.archives-ouvertes.fr/docs/00/29/51/83/PDF/acp-2-39-2002.pdf
Language	English
Access Restriction	Open
Subject Keyword	Aerosol Dose Form Atmosphere, unit of pressure Budgets Chemical procedure Concentrate Dosage Form EMC Atmos Emission - Male genitalia finding FOM protocol Feedback Genetic Heterogeneity Giardia lamblia 65 Ag:PrThr:Pt:Stool:Ord Healthcare Encounters Domain Hydroxyl Radical Mike Lesser Moderate Response Natural regeneration Nitrates Oxidants Phys.org Q-Chem Simulation photolysis physical hard work
Content Type	Text
Resource Type	Article

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