NDLI: Can global models ignore the chemical composition of aerosols ?

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Can global models ignore the chemical composition of aerosols ?

Content Provider	Semantic Scholar
Author	Roesler, Elizabeth L. Penner, Joyce E.
Copyright Year	2010
Abstract	[1] The number of cloud droplets formed from a population of aerosols depends on the aerosol number concentration, NA, the size distribution, and the chemical composition. The cloud albedo effect occurs when increasing NA causes increases to the droplet concentration, ND. We examined the effects of changing aerosol size, composition, and number on ND within the United States. We found that changing the water‐soluble organic carbon (WSOC) fraction from 50% to 0.05% in the fine mode aerosol and from 50% to 95% in the coarse mode aerosol decreased ND by an average of 34%. Our results show that the changes to the aerosol composition cause over a 20% change to ND, a magnitude previously estimated to cause a 1 W m change in radiative forcing. Given the realistic range of aerosol compositions used here, it is not possible for global models to correctly calculate the cloud albedo effect if composition is ignored. Citation: Roesler, E. L., and J. E. Penner (2010), Can global models ignore the chemical composition of aerosols?, Geophys. Res. Lett., 37, L24809, doi:10.1029/2010GL044282.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://deepblue.lib.umich.edu/bitstream/handle/2027.42/94766/grl27306.pdf;jsessionid=2E61F25C3A3F9D494402B3105B354B3B?sequence=1
Language	English
Access Restriction	Open
Subject Keyword	Aerosol Dose Form Aerosols CDISC SDTM Not Done Terminology Composition Heart rate variability Neodymium-Doped Yttrium Aluminum Garnet Lasers Norsk Data Organic Chemicals Sodium Text simplification
Content Type	Text
Resource Type	Article

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