Secondary ice production in summer clouds over the Antarctic coast: an underappreciated process in atmospheric models

doi:10.5194/acp-2020-328

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-328
	Secondary ice production in summer clouds over the Antarctic coast: an underappreciated process in atmospheric models
	Georgia Sotiropoulou, Etienne Vignon, Gillian Young, Hugh Morrison, Sebastian J. O'Shea, Thomas Lachlan-Cope, Alexis Berne, and Athanasios Nenes
	2020-05-25
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	The correct representation of Antarctic clouds in atmospheric models is crucial for accurate projections of the future Antarctic climate. This is particularly true for summer clouds which play a critical role in the surface melting of the ice-shelf in the vicinity of Weddell Sea. However these clouds are often poorly represented, as ice crystal number concentrations (ICNCs) are undepredicted by atmospheric models, even when primary ice formation is constrained with aerosol measurements. Rime-splintering, thought to be the dominant secondary ice production (SIP) mechanism at temperatures between −8 and −3 °C, is also very weak in summer Antarctic conditions. Including a parameterization for SIP due to break-up (BR) from collisions between ice particles in the Weather and Research Forecasting model bridges the gap between observations and simulations, suggesting that BR could account for the enhanced ICNCs in the pristine Antarctic atmosphere. These results are insensitive to uncertainties in primary ice production. The BR mechanism is currently not represented in most weather prediction and climate models; including this process can have a significant impact on the Antarctic radiation budget and thus in projections of the future regional climate.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/271642
专题	地球科学
推荐引用方式 GB/T 7714	Georgia Sotiropoulou, Etienne Vignon, Gillian Young, Hugh Morrison, Sebastian J. O'Shea, Thomas Lachlan-Cope, Alexis Berne, and Athanasios Nenes. Secondary ice production in summer clouds over the Antarctic coast: an underappreciated process in atmospheric models[J]. Atmospheric Chemistry and Physics,2020.
APA	Georgia Sotiropoulou, Etienne Vignon, Gillian Young, Hugh Morrison, Sebastian J. O'Shea, Thomas Lachlan-Cope, Alexis Berne, and Athanasios Nenes.(2020).Secondary ice production in summer clouds over the Antarctic coast: an underappreciated process in atmospheric models.Atmospheric Chemistry and Physics.
MLA	Georgia Sotiropoulou, Etienne Vignon, Gillian Young, Hugh Morrison, Sebastian J. O'Shea, Thomas Lachlan-Cope, Alexis Berne, and Athanasios Nenes."Secondary ice production in summer clouds over the Antarctic coast: an underappreciated process in atmospheric models".Atmospheric Chemistry and Physics (2020).