Aerosol first indirect effects on non-precipitating low-level liquid cloud properties as simulated by CAM5 at ARM sites

作者: Chuanfeng Zhao , Stephen A. Klein , Shaocheng Xie , Xiaohong Liu , James S. Boyle

DOI: 10.1029/2012GL051213

关键词: Cloud condensation nucleiMode (statistics)Atmospheric modelAtmospheric sciencesLiquid water contentMeteorologyWeather forecastingEffective radiusWater contentAerosolEnvironmental science

摘要: [1] We quantitatively examine the aerosol first indirect effects (FIE) for non-precipitating low-level single-layer liquid phase clouds simulated by Community Atmospheric Model version 5 (CAM5) running in weather forecast mode at three DOE Radiation Measurement (ARM) sites. The FIE is quantified terms of a relative change cloud droplet effective radius accumulation number concentration under conditions fixed water content (LWC). CAM5 simulates aerosol-cloud interactions reasonably well this specific type, and consistent with long-term observations examined locations. generally decreases LWC coastal ARM sites, larger using condensation nuclei rather than as choice amount. However, it has no significant variations location systematic strong seasonal

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