2020
DOI: 10.1029/2019jd032233
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Indirect Effects of Secondary Organic Aerosol on Cirrus Clouds

Abstract: Secondary organic aerosols (SOA) have been identified as a potential source of depositional ice nucleating particles and thus may have a radiative effect on cirrus clouds. This study develops a global model to examine the radiative effect of SOA on cirrus clouds using different treatments for the size distribution of SOA. The SOA from new particle formation by organics and their subsequent growth has a radiative effect of 0.35 ± 0.06 W m−2, while the radiative effect of SOA calculated by assuming a fixed size … Show more

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Cited by 7 publications
(5 citation statements)
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“…The nucleated SOA particles grow by deposition and coagulation of sulfuric acid as well as the oxidation products of isoprene, α-pinene, limonene, and aromatics, which are in the aerosol phase. This SOA was simulated using the version of the CESM/IMPACT model outlined in Zhu et al (2017 and Penner (2019, 2020). The SOA that meets the requirements of the glass transition temperature and RH i calculated using the equations in Wang et al (2012) acts as an effective heterogeneous INP.…”
Section: Experiments With the Global Modelmentioning
confidence: 99%
“…The nucleated SOA particles grow by deposition and coagulation of sulfuric acid as well as the oxidation products of isoprene, α-pinene, limonene, and aromatics, which are in the aerosol phase. This SOA was simulated using the version of the CESM/IMPACT model outlined in Zhu et al (2017 and Penner (2019, 2020). The SOA that meets the requirements of the glass transition temperature and RH i calculated using the equations in Wang et al (2012) acts as an effective heterogeneous INP.…”
Section: Experiments With the Global Modelmentioning
confidence: 99%
“…This results in approximately 0.6% of all emitted aircraft soot that can possibly acting as an INP to form ice. The model's ability to simulate the profile of soot from fossil fuel, biofuel and aircraft emissions was evaluated by comparison with field campaigns (Figure 2 in Samset et al., 2014; Figure S15 in Zhu & Penner, 2020a). Dust and sea salt are each carried in four separate bins with varying radii.…”
Section: Methodsmentioning
confidence: 99%
“…Consequently, BC shows less dependence on wavelength, strongly absorbing light from UV to near infrared. However, AAE of BrC varies from smaller than 1 to as great as 8, 230 indicating high wavelength dependence. As a result, the absorption of BrC sharply decreases with increasing wavelength, with strong absorption on UV but weak absorption on short-wavelength visible light.…”
Section: Light-absorbing Carbonaceous Particles In Snowmentioning
confidence: 97%
“…The following absorption measurement by UV-vis spectrophotometer cannot reect the contribution from insoluble BrC. For modeling methods, currently, the mass concentration of BrC is estimated by using a certain percentage of organic carbon, 229,230 which no doubt would cause deviation in the radiative impacts of BrC.…”
Section: The Radiation Impacts Of Lacs Deposited On Snowmentioning
confidence: 99%