Research Highlights

 

Highlights will be written for high-level accomplishments and published journal articles of ASR research. Each ASR principal investigator (PI) is expected to submit at least one highlight per fiscal year.

Recent Highlights

Surface-atmosphere decoupling prolongs stratocumulus persistence under warm advection

29 May 2023

Li, Zhanqing

Supported by: ASR

Research area: Cloud Processes

Enhancing the understanding of stratocumulus (Sc) cloud responses to meteorological factors could help reduce uncertainties in climate projections. Among various factors (lower-tropospheric stability, subsidence rate, wind speeds, etc.), the influence of horizontal temperature advection (Tadv), particularly warm-air advection (WADV), on Sc remains the least understood. This study elucidates the physical [...]

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Importance of representing the haze particles in convection cloud chamber simulations

26 May 2023

Yang, Fan; Vogelmann, Andrew M.

Supported by: ASR

Research area: Cloud-Aerosol-Precipitation Interactions

Cloud droplets develop from aerosol particles. But before an aerosol particle activates to a cloud droplet, it exists as a solution droplet, commonly referred to as haze. Most atmospheric models do not fully represent haze particles and the associated interactions with cloud droplets. By developing new microphysical models to explicitly [...]

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Predicting airflow above canopies in complex terrain

25 May 2023

Chamecki, Marcelo

Supported by: ARM ASR

Research area: General Circulation and Single Column Models/Parameterizations

Mathematically describing air flow in the vicinity of tall canopies is required in a plethora of climate- and atmospheric-related applications.   The swirling motion associated with air flow and how it interacts with the canopy structure has resisted complete theoretical treatment, which is the subject of this work.

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Tracking the life cycle of thunderstorms: Perspectives from GoAmazon2014/15

23 May 2023

Giangrande, Scott

Supported by: ARM ASR

Research area: Vertical Velocity

The Amazon Basin has been at the forefront of impactful deep convective cloud (DCC) studies. Our study investigates daytime DCC observations to document changes in storm characteristics within the context of the larger-scale environmental shifts found between the Amazon wet and dry seasons. The focus is on the use of [...]

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Evaluation of simulated cloud phase in EAMv2 at high latitudes

20 May 2023

Liu, Xiaohong

Supported by: ARM ASR

Research area: General Circulation and Single Column Models/Parameterizations

Mixed-phase clouds, in which liquid droplets and ice particles coexist at temperatures between 0 C and −40 C, play an essential role in modulating the surface energy budget and impacting future climate change. In this study, researchers used a satellite simulator to consistently evaluate model-simulated high-latitude clouds in the first [...]

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